JANUS ASPEN SERIES
N-30D, 1999-08-17
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Janus | Retirement Advantage

Variable  Annuity  Issued by Western  Reserve Life  Assurance  Co. of Ohio,  St.
Petersburg, FL

1999 Semiannual Report - Janus Aspen Series

     Janus Aspen Growth Portfolio
     Janus Aspen Aggressive Growth Portfolio
     Janus Aspen Capital Appreciation Portfolio
     Janus Aspen International Growth Portfolio
     Janus Aspen Worldwide Growth Portfolio
     Janus Aspen Balanced Portfolio
     Janus Aspen Equity Income Portfolio
     Janus Aspen Growth and Income Portfolio
     Janus Aspen Flexible Income Portfolio
     Janus Aspen High-Yield Portfolio
     Janus Aspen Money Market Portfolio

Logo Goes Here

<PAGE>

Table | of Contents

Janus Aspen Series
Portfolio Managers' Commentaries and Schedules of Investments
     Growth Portfolio ....................................................     1
     Aggressive Growth Portfolio .........................................     4
     Capital Appreciation Portfolio ......................................     7
     International Growth Portfolio ......................................    10
     Worldwide Growth Portfolio ..........................................    15
     Balanced Portfolio ..................................................    20
     Equity Income Portfolio .............................................    26
     Growth and Income Portfolio .........................................    30
     Flexible Income Portfolio ...........................................    34
     High-Yield Portfolio ................................................    40
     Money Market Portfolio ..............................................    44
Statements of Operations .................................................    46
Statements of Assets and Liabilities .....................................    48
Statements of Changes in Net Assets ......................................    50
Financial Highlights .....................................................    53
Notes to the Schedules of Investments ....................................    62
Notes to Financial Statements ............................................    63
Explanations of Charts, Tables
  and Financial Statements ...............................................    68
Year 2000 Discussion .....................................................    70

                                                                  Logo Goes Here
<PAGE>

                                                  Janus | Aspen Growth Portfolio

[PHOTO]
Jim Craig
portfolio manager

For the six months ended June 30, 1999,  Janus Aspen Growth  Portfolio  returned
16.67% for its Institutional  Shares and 17.07% for its Retirement Shares.  This
compares with a 12.38% gain posted by its benchmark, the S&P 500 Index.(1)

One of the most significant  economic  developments during the first half of our
fiscal  year was the  directional  change in Asia's  financial  situation.  More
specifically,  Japan's  economy  finally began showing subtle signs of recovery.
This,  coupled  with  exceptionally   strong  spending  by  U.S.  consumers  and
corporations  (particularly  in the  technology  realm),  helped push  long-term
interest rates higher. Meanwhile, the possibility of an improving global economy
caused investors to shift out of growth stocks into economically  sensitive,  or
cyclical,  stocks.  Fortunately,  the rotation in the market was only temporary,
enabling growth stocks to rest briefly before continuing their upward climb.

In the  latter  part of the  period,  the  U.S.  economy  continued  to heat up,
sparking inflation  concerns.  As such, the Federal Reserve Board adopted a bias
toward tightening  short-term interest rates and, as a precaution against rising
inflation,  eventually  carried out its bias,  boosting rates a quarter-point on
June 30.

Despite the trends that  developed  during the period,  we steered  clear of the
economically sensitive areas of the market. In our view, the weaker fundamentals
of these companies simply won't allow them to sustain strong  performance.  That
said, we continued to invest in businesses that demonstrate exceptional earnings
growth potential, many of which rewarded us with healthy returns.

Among our biggest gainers were technology stocks,  particularly  semiconductors.
Texas  Instruments  advanced  68% as  demand  poured in for its  digital  signal
processors. DSPs, as they're known, convert signals such as sound and light into
digital form and are used in everything from cellular phones and PC batteries to
VCRs and camcorders.  Our holdings in semiconductor  companies Linear Technology
and Maxim  Integrated  Products also posted  impressive  results.  As two of the
world's leading linear chip makers, these companies are the enablers behind much
of today's cutting-edge technology.

Another technology  company that contributed to the Portfolio's  performance was
Sun Microsystems.  We view Sun as a pioneer in the lucrative enterprise software
market.  Its most exciting product is JAVA, a programming  language  intended to
create Web-enabled  applications that could someday become the standard for most
computing needs.

In the financial  services  realm, a new position for the Portfolio was American
International  Group  (AIG),  one of the world's  largest  insurers.  While most
financial stocks were flat, AIG gained thanks to an uptick in pricing within the
property and casualty  insurance arena - the first in seven years.  This line of
coverage  accounts  for nearly  one-third  of the  company's  business.  Further
boosting  the stock was a strategic  acquisition  of annuity  provider Sun Life.
Because of  exceptionally  high demand for annuity  products in Japan, we expect
this new segment of AIG's business to really take off.

While our  holdings in Time Warner and Comcast  produced  solid  results,  cable
stocks in  general  experienced  a brief  correction  late in the  period.  This
setback  occurred  as a result of a federal  court  ruling  that would  prohibit
telecommunications  providers from  controlling  access to the networks of their
cable  subsidiaries,  which could slow consolidation  within the cable industry.
However,  cable stocks recovered on speculation that the Federal  Communications
Commission  will  respond  to this court  ruling  with  proposals  that are more
favorable to cable companies.

Despite our successes, the Portfolio experienced some disappointments, including
McKesson  HBOC, a provider of  pharmaceutical  supply  management and healthcare
information   technology.   The  stock   declined   on  reports  of   accounting
irregularities,  and we  liquidated  the  position at a loss.  Likewise,  a poor
showing by several of our pharmaceutical  stocks was also a drag on performance.
Despite strong product  pipelines at these  companies,  the overall industry was
hurt  over  concerns  that  the  government  could  take a more  active  role in
regulating  drug  prices.  On that note,  we reduced  our  exposure  to the more
expensive drug stocks,  liquidating our holdings in Warner-Lambert  and trimming
our Pfizer position.

Going  forward,  we believe a slowdown  in the  economy's  growth  rate would be
healthy  for growth  stocks,  enabling  company  earnings to catch up with their
price multiples.  That said, we were encouraged by the Federal Reserve's attempt
to moderate economic growth and keep inflation under control.

Thank you for your continued investment in Janus Aspen Growth Portfolio.

Portfolio Asset Mix                  June 30, 1999        December 31, 1998
- --------------------------------------------------------------------------------
Equities                                     85.2%                    93.2%
  Foreign                                     7.5%                     4.9%
  Europe                                      2.9%                     3.6%
Top 10 Equities                              36.3%                    36.5%
Number of Stocks                                65                       70
Cash & Cash Equivalents                      14.8%                     6.8%
- --------------------------------------------------------------------------------
(1)  All returns include reinvested dividends.

Past performance does not guarantee future results.

                                           Janus Aspen Series / June 30, 1999  1
<PAGE>

Average Annual Total Return(1)
For the Periods Ended June 30, 1999 (unaudited)
- --------------------------------------------------------------------------------
Institutional Shares (Inception Date 9/13/93)
  1 Year                                                     32.73%
  5 Year                                                     25.30%
  From Inception                                             22.14%
- --------------------------------------------------------------------------------
S&P 500 Index
  1 Year                                                     22.76%
  5 Year                                                     27.86%
  From Inception Date of Institutional Shares                23.28%
- --------------------------------------------------------------------------------
Retirement Shares (Inception Date 5/1/97)
  1 Year                                                     32.87%
  5 Year                                                     24.71%
  From Portfolio Inception                                   21.35%
- --------------------------------------------------------------------------------
Returns shown for  Retirement  Shares for periods  prior to their  inception are
derived from the historical  performance of  Institutional  Shares,  adjusted to
reflect the higher operating expenses of Retirement Shares.

(1)  All returns reflect reinvested  dividends.  The Portfolio's  securities may
     differ significantly from the securities in the Index. Index returns do not
     include  taxes or  dividends  and interest  payments or operating  expenses
     necessary to maintain a portfolio  consisting of the same  securities  that
     are in the Index.  These returns do not reflect the charges and expenses of
     any particular  insurance product or qualified plan.  Investment return and
     principal value will fluctuate so that shares, when redeemed,  may be worth
     more or less than their  original cost.  The adviser  voluntarily  waives a
     portion of the Portfolio's  expenses.  Without such waiver, the Portfolio's
     total returns for each class would have been lower.  Past  performance does
     not guarantee future results.

SCHEDULE OF INVESTMENTS (unaudited)

Shares or Principal Amount                                        Market Value
- --------------------------------------------------------------------------------
Common Stock - 85.2%
Automotive - Truck Parts and Equipment -  0.6%
     193,750       Federal-Mogul Corp. ....................     $     10,075,000

Brewery - 1.2%
     205,390       Anheuser-Busch Companies, Inc. .........           14,569,853
     136,496       Heineken N.V ...........................            6,988,958

                                                                      21,558,811

Broadcast Services and Programming - 3.2%
     766,660       AT&T Corp./Liberty Media Group - Class A*          28,174,755
     403,980       Clear Channel Communications, Inc.* ....           27,849,371

                                                                      56,024,126

Cable Television - 7.7%
     276,640       Adelphia Communications Corp. - Class A*           17,601,220
   2,152,650       Comcast Corp. - Class A ................           82,742,484
     719,980       Cox Communications, Inc. - Class A* ....           26,504,264
     192,615       TCA Cable TV, Inc. .....................           10,690,133

                                                                     137,538,101

Cellular Telecommunications - 1.9%
     235,480       Sprint Corp./PCS Group* ................           13,451,795
     104,442       Vodafone AirTouch PLC (ADR)* ...........           20,601,283

                                                                      34,053,078

Circuits - 4.1%
     581,400       Linear Technology Corp. ................           39,099,150
     516,700       Maxim Integrated Products, Inc.* .......           34,360,550

                                                                      73,459,700

Commercial Banks - 1.0%
     237,135       Firstar Corp. ..........................     $      6,639,780
      19,475       M&T Bank Corp. .........................           10,711,250

                                                                      17,351,030

Commercial Services - 1.1%
     588,775       Paychex, Inc. ..........................           18,767,203

Computer Software - 1.7%
     298,970       Microsoft Corp.* .......................           26,963,357
     249,813       Wind River Systems, Inc.* ..............            4,012,621

                                                                      30,975,978

Computers - Memory Devices - 0.1%
      16,385       VERITAS Software Corp.* ................            1,555,551

Computers - Micro - 5.4%
     307,085       Apple Computer, Inc.* ..................           14,221,874
   1,199,425       Sun Microsystems, Inc.* ................           82,610,397

                                                                      96,832,271

Data Processing and Management - 0.7%
     293,715       Automatic Data Processing, Inc. ........           12,923,460

Diversified Financial Services - 1.1%
     405,000       Citigroup, Inc. ........................           19,237,500

Diversified Operations - 7.1%
      15,440       Danaher Corp. ..........................              897,450
     377,135       General Electric Co. ...................           42,616,255
     864,959       Tyco International, Ltd. ...............           81,954,865

                                                                     125,468,570

Electronic Components - Semiconductors - 2.6%
     314,175       Texas Instruments, Inc. ................           45,555,375

See Notes to Schedules of Investments.

2  Janus Aspen Series / June 30, 1999
<PAGE>

                                                  Janus | Aspen Growth Portfolio

SCHEDULE OF INVESTMENS (unaudited)

Shares or Principal Amount                                        Market Value
- --------------------------------------------------------------------------------
Electronic Safety Devices - 0.3%
     141,350       Pittway Corp. - Class A ................     $      4,832,403

Finance - Credit Card - 2.4%
     334,215       American Express Co. ...................           43,489,727

Finance - Investment Bankers/Brokers - 2.8%
     446,870       Charles Schwab Corp. ...................           49,099,841

Finance - Mortgage Loan Banker - 0.5%
     149,975       Freddie Mac ............................            8,698,550

Food - Wholesale - 0.2%
      98,725       U.S. Foodservice* ......................            4,208,153

Instruments - Scientific - 0.6%
     268,450       Dionex Corp.* ..........................           10,872,225

Life and Health Insurance - 0.1%
     153,142       Prudential Corp. PLC ...................            2,264,310

Medical - Drugs - 4.6%
     350,000       American Home Products Corp. ...........           20,125,000
     249,930       Eli Lilly and Co. ......................           17,901,236
     106,550       Pfizer, Inc. ...........................           11,693,863
     243,235       Pharmacia & Upjohn, Inc. ...............           13,818,788
     357,285       Schering-Plough Corp. ..................           18,936,105

                                                                      82,474,992

Medical Instruments - 1.4%
     150,000       Guidant Corp.* .........................            7,715,625
     215,000       Medtronic, Inc. ........................           16,743,125

                                                                      24,458,750

Money Center Banks - 2.3%
   1,107,670       Bank of New York Co., Inc. .............           40,637,643

Multi-Line Insurance - 2.8%
     419,625       American International Group, Inc. .....           49,122,352

Multimedia - 6.5%
   1,202,586       Time Warner, Inc. ......................           88,390,071
     612,455       Viacom, Inc. - Class B* ................           26,948,020

                                                                     115,338,091

Networking Products - 4.3%
   1,191,814       Cisco Systems, Inc.* ...................           76,872,003

Optical Supplies - 0.7%
     113,715       Allergan, Inc. .........................           12,622,365

Pipelines - 2.5%
     549,115       Enron Corp. ............................           44,890,151

Property and Casualty Insurance - 0.9%
     116,260       Progressive Corp. ......................           16,857,700

Publishing - Periodicals - 0.8%
     340,884       Wolters Kluwer N.V .....................           13,569,603

Radio - 0.6%
     386,770       Infinity Broadcasting Corp. - Class A* .           11,506,408

Retail - Building Products - 1.0%
     269,855       Home Depot, Inc. .......................           17,388,782

Retail - Discount - 2.4%
     271,685       Costco Companies, Inc.* ................           21,751,780
     426,290       Wal-Mart Stores, Inc. ..................           20,568,492

                                                                      42,320,272

Retail - Drug Store - 0%
      10,860       Walgreen Co. ...........................              319,012

Retail - Office Supplies - 0.7%
     400,000       Staples, Inc.* .........................           12,375,000

Retail - Restaurants - 0.2%
      73,780       McDonald's Corp. .......................     $      3,048,036

Super-Regional Banks - 0.6%
     107,805       Northern Trust Corp. ...................           10,457,085

Telecommunication Equipment - 1.6%
      21,511       Nokia Oyj ..............................            1,885,614
     288,225       Nokia Oyj (ADR) ........................           26,390,602

                                                                      28,276,216

Telecommunication Services - 0.9%
     125,000       Hyperion Telecommunications, Inc. -
                     Class A* .............................            2,351,563
     163,925       NTL, Inc.* .............................           14,128,286

                                                                      16,479,849

Telephone - Long Distance - 1.4%
     292,860       MCI WorldCom, Inc.* ....................           25,259,175

Television - 1.2%
     310,385       Univision Communications, Inc. - Class A*          20,485,410

Transportation - Air Freight - 1.4%
     460,000       FDX Corp.* .............................           24,955,000
- --------------------------------------------------------------------------------
Total Common Stock (cost  $1,067,043,968) .................        1,514,554,858
- --------------------------------------------------------------------------------
Repurchase Agreement - 3.7%
 $66,600,000       Morgan Stanley & Co., Inc.
                     5.10%, dated 6/30/99, maturing 7/1/99,
                     to be repurchased at $66,609,435
                     collateralized by $89,753,443 in
                     Fannie Mae, 5.50%-8.50%,
                     1/1/04-7/1/29 with a value of
                     $67,939,698 (cost $66,600,000) .......           66,600,000
- --------------------------------------------------------------------------------
U.S. Government Agencies - 8.3%
                   Fannie Mae:
  50,000,000         4.70%, 8/13/99 .......................           49,719,306
  50,000,000         4.66%, 10/19/99 ......................           49,222,000
                   Freddie Mac
  50,000,000         4.91%, 12/7/99 .......................           48,867,000
- --------------------------------------------------------------------------------
Total U.S. Government Agencies (cost $147,836,673) ........          147,808,306
- --------------------------------------------------------------------------------
U.S. Government Obligation - 2.7%
                   U.S. Treasury Bill
  50,000,000         4.615%, 5/25/00 (cost $47,899,917) ...           47,856,500
- --------------------------------------------------------------------------------
Total Investments (total cost $1,329,380,558) - 99.9% .....        1,776,819,664
- --------------------------------------------------------------------------------
Cash, Receivables and Other Assets, net of Liabilities - 0.1%          1,017,856
- --------------------------------------------------------------------------------
Net Assets - 100% .........................................       $1,777,837,520
- --------------------------------------------------------------------------------

Summary of Investments by Country, June 30, 1999

Country              % of Investment Securities                     Market Value
- --------------------------------------------------------------------------------
Bermuda                                    4.6%                 $     81,954,865
Finland                                    1.6%                       28,276,216
Netherlands                                1.2%                       20,558,561
United Kingdom                             0.1%                        2,264,310
United States++                           92.5%                    1,643,765,712
- --------------------------------------------------------------------------------
Total                                    100.0%                 $  1,776,819,664

++Includes Short-Term Securities (77.8% excluding Short-Term Securities)

See Notes to Schedules of Investments.

                                           Janus Aspen Series / June 30, 1999  3
<PAGE>

Janus | Aspen Aggressive Growth Portfolio

[PHOTO]
Jim Goff
portfolio manager

Janus Aspen Aggressive  Growth Portfolio posted  impressive  results for the six
months  ended June 30, 1999,  gaining  30.73% for its  Institutional  Shares and
30.43% for its Retirement  Shares.  In comparison,  the Standard & Poor's MidCap
400 Index returned 6.87%.(1)

The disparity in performance between our Portfolio and the S&P 400 can be summed
up simply:  We own mid-cap  businesses  in the  fastest-growing  segments of the
economy, such as technology, telecommunications and media.

While the market  momentum  that began at the end of 1998  carried  through  the
first  quarter of this year,  many growth stocks lost ground early in the second
quarter.  An uptick in long-term  interest  rates, as well as concerns that some
high-growth companies were overvalued,  were to blame. Concurrently,  the belief
that Asia's  economy was on the mend led  investors  to favor  cyclical  stocks,
which normally  perform well during an economic  recovery.  This flirtation with
cyclicals was  short-lived,  however,  and growth stocks soon bounced back. Even
better,  the market,  no longer driven solely by a handful of large-cap  stocks,
broadened in the spring to include small-cap and mid-cap businesses, a move that
worked in our favor.

Turning our  attention  to the  Portfolio,  data storage is an area where we are
uncovering exciting investment  opportunities.  In particular,  VERITAS Software
was a standout performer. Benefiting from the phenomenal growth of the Internet,
VERITAS has become the leading provider of software to manage and store the huge
amount of information being generated today. Moreover,  like Microsoft,  VERITAS
has proprietary control of its software system,  enabling the company to further
leverage its dominant  position as the demand for data management  continues its
dramatic rise.

Another  successful holding was Exodus  Communications.  This innovative company
has carved out a niche for itself building and  maintaining  the  infrastructure
required  to ensure the  uninterrupted  operation  of  corporate  Web sites.  By
offering  customers a secure way to store the computer  platforms  housing their
data, Exodus has become a leading Web service provider.

Telecommunications  companies Metromedia Fiber Network,  Nextlink Communications
and Level 3 Communications  also provided a significant boost to the Portfolio's
performance.  These three  businesses  are building  fiber-optic  networks that,
because of their technological  superiority,  not only carry more voice and data
traffic,  but  carry it faster  than the  older  systems  they  replace.  As the
proliferation of the Internet creates a growing need for high-capacity broadband
networks, Metromedia, Nextlink and Level 3 are clearly positioned to benefit.

Hispanic Broadcasting,  formerly known as Heftel, was one of our biggest gainers
in the media  area.  Catering  to the  Hispanic  audience,  the  fastest-growing
minority  population  in the U.S.,  the company  broadens  its  station  base by
acquiring English language radio stations and converting them to Spanish. Today,
Hispanic  Broadcasting  owns  the  largest  network  of  Spanish-language  radio
stations in the U.S.  Furthermore,  many businesses are moving their promotional
dollars  away  from  TV and  newspapers  to  radio,  where  advertising  is less
expensive and more targeted.  This trend, combined with the fact that the buying
power of Hispanics  is expected to more than double in the next 10 years,  gives
Hispanic  Broadcasting  a powerful  franchise with  considerable  momentum going
forward.

On the downside,  we were disappointed by the performance of Apollo Group, which
operates the University of Phoenix.  Despite the favorable  outcome of a dispute
with the Department of Education over Apollo's student loan repayment practices,
increased  expenditures  for new facilities in  Pennsylvania  and Maryland put a
damper on earnings.  Still, with the demand for adult education  programs on the
rise, we remain optimistic about Apollo and have maintained the position.

Looking ahead,  we believe the U.S.  economy will continue to grow,  albeit at a
moderate  pace.  But no matter what the backdrop,  our goal is to find companies
with sustainable earnings growth that can withstand any economic environment.

Thank you for your investment in Janus Aspen Aggressive Growth Portfolio.

Portfolio Asset Mix                  June 30, 1999        December 31, 1998
- --------------------------------------------------------------------------------
Equities                                     99.6%                    95.6%
  Foreign                                     7.7%                     9.7%
Top 10 Equities                              43.8%                    47.4%
Number of Stocks                                47                       50
Cash & Cash Equivalents                       0.4%                     4.4%
- --------------------------------------------------------------------------------

(1) All returns include reinvested dividends.

Past performance does not guarantee future results.

4  Janus Aspen Series / June 30, 1999
<PAGE>

Average Annual Total Return(1)
For the Periods Ended June 30, 1999 (unaudited)
- --------------------------------------------------------------------------------
Institutional Shares (Inception Date 9/13/93)
  1 Year                                                     49.67%
  5 Year                                                     27.39%
  From Inception                                             25.55%
- --------------------------------------------------------------------------------
S&P MidCap 400 Index
  1 Year                                                     17.18%
  5 Year                                                     22.28%
  From Inception Date of Institutional Shares                18.33%
- --------------------------------------------------------------------------------
Retirement Shares (Inception Date 5/1/97)
  1 Year                                                     48.93%
  5 Year                                                     26.72%
  From Portfolio Inception                                   24.70%
- --------------------------------------------------------------------------------
Returns shown for  Retirement  Shares for periods  prior to their  inception are
derived from the historical  performance of  Institutional  Shares,  adjusted to
reflect the higher operating expenses of Retirement Shares.

(1)  All returns reflect reinvested  dividends.  The Portfolio's  securities may
     differ significantly from the securities in the Index. Index returns do not
     include  taxes or  dividends  and interest  payments or operating  expenses
     necessary to maintain a portfolio  consisting of the same  securities  that
     are in the Index.  These returns do not reflect the charges and expenses of
     any particular  insurance product or qualified plan.  Investment return and
     principal value will fluctuate so that shares, when redeemed,  may be worth
     more or less than their  original cost.  The adviser  voluntarily  waives a
     portion of the Portfolio's  expenses.  Without such waiver, the Portfolio's
     total returns for each class would have been lower.  Past  performance does
     not guarantee future results.

SCHEDULE OF INVESTMENTS (unaudited)

Shares or Principal Amount                                        Market Value
- --------------------------------------------------------------------------------
Common Stock - 99.6%
Airlines - 1.1%
     275,333       Ryanair Holdings PLC (ADR)* ............     $     14,592,649

Audio and Video Products - 1.9%
     402,825       Gemstar International Group, Ltd.* .....           26,284,331

Broadcast Services and Programming - 2.0%
     396,501       Clear Channel Communications, Inc.* ....           27,333,788

Cable Television - 3.6%
     498,665       Adelphia Communications Corp. - Class A*           31,727,561
   1,056,735       Rogers Communications, Inc.* ...........           17,105,898

                                                                      48,833,459

Cellular Telecommunications - 4.2%
   1,921,320       Crown Castle International Corp.* ......           39,987,473
     293,490       Sprint Corp./PCS Group* ................           16,765,616

                                                                      56,753,089

Circuits - 5.0%
   1,004,455       Vitesse Semiconductor Corp.* ...........           67,737,934

Commercial Banks - 1.8%
     883,615       Firstar Corp. ..........................           24,741,220

Commercial Services - 5.3%
     224,660       Concord EFS, Inc.* .....................            9,505,926
   1,969,147       Paychex, Inc. ..........................           62,766,561

                                                                      72,272,487

Computer Data Security - 2.1%
     335,445       VeriSign, Inc.* ........................           28,932,131

Computers - Memory Devices - 3.0%
     427,230       VERITAS Software Corp.* ................     $     40,560,148

Electric - Generation - 1.5%
     346,940       AES Corp.* .............................           20,165,887

Fiber Optics - 4.6%
     331,045       E-Tek Dynamics, Inc.* ..................           15,745,328
   1,303,050       Metromedia Fiber Network, Inc. - Class A*          46,828,359

                                                                      62,573,687

Finance - Investment Bankers/Brokers - 2.7%
     326,615       Charles Schwab Corp. ...................           35,886,823

Human Resources - 0.7%
     897,980       Capita Group PLC .......................            9,292,665

Internet Content - 0.1%
      42,020       Flycast Communications Corp.* ..........              803,632

Internet Software - 9.5%
     333,820       Concentric Network Corp.* ..............           13,269,345
     523,530       Exodus Communications, Inc.* ...........           62,790,879
     976,250       PSINet, Inc.* ..........................           42,710,938
     139,905       Verio, Inc.* ...........................            9,723,398

                                                                     128,494,560

Lasers - Systems and Components - 1.4%
     111,035       Uniphase Corp.* ........................           18,431,810

Medical - Drugs - 4.1%
     348,950       MedImmune, Inc.* .......................           23,641,363
     384,065       Sepracor, Inc.* ........................           31,205,281

                                                                      54,846,644

See Notes to Schedules of Investments.

                                           Janus Aspen Series / June 30, 1999  5
<PAGE>

Janus | Aspen Aggressive Growth Portfolio

SCHEDULE OF INVESTMENTS (unaudited)

Shares or Principal Amount                                        Market Value
- --------------------------------------------------------------------------------
Medical - Generic Drugs - 1.7%
     642,275       Watson Pharmaceuticals, Inc.* ..........     $     22,519,767

Medical Products - 0.6%
     104,590       MiniMed, Inc.* .........................            8,046,893

Networking Products - 0.3%
      27,100       Juniper Networks, Inc.* ................            4,037,900

Radio - 7.9%
     433,120       Chancellor Media Corp.* ................           23,875,740
     346,655       Citadel Communications Corp.* ..........           12,544,578
     235,895       Entercom Communications Corp.* .........           10,084,511
     790,015       Hispanic Broadcasting Corp.* ...........           59,942,388

                                                                     106,447,217

Resorts and Theme Parks - 1.0%
     366,880       Premier Parks, Inc.* ...................           13,482,840

Retail - Building Products - 0.3%
      69,735       Fastenal Co. ...........................            3,656,729

Retail - Internet - 8.7%
     560,680       Amazon.com, Inc.* ......................           70,155,085
     308,865       eBay, Inc.* ............................           46,638,615

                                                                     116,793,700

Retail - Restaurants - 1.5%
   1,403,942       PizzaExpress PLC .......................           20,359,911

Schools - 5.2%
   2,629,056       Apollo Group, Inc. - Class A* ..........           69,834,300

Telecommunication Services - 10.1%
     425,410       AT&T Canada, Inc.* .....................           27,252,828
     406,380       Level 3 Communications, Inc.* ..........           24,408,199
     880,585       McLeodUSA, Inc. - Class A* .............           48,432,175
     411,270       NTL, Inc.* .............................           35,446,333

                                                                     135,539,535

Telephone - Integrated - 4.1%
     734,495       NEXTLINK Communications, Inc.* .........           54,628,066

Television - 1.4%
     277,908       Univision Communications, Inc. - Class A*          18,341,928

Therapeutics - 1.1%
     276,805       QLT PhotoTherapeutics, Inc.* ...........           15,224,275

Wireless Equipment - 1.1%
     614,460       American Tower Corp.* ..................           14,747,040
- --------------------------------------------------------------------------------
Total Common Stock (cost $960,224,352)                             1,342,197,045
- --------------------------------------------------------------------------------
Repurchase Agreement - 2.2%
 $30,100,000       Morgan Stanley & Co., Inc.
                     5.10%, dated 6/30/99, maturing 7/1/99,
                     to be repurchased at $30,104,264
                     collateralized by $40,564,244 in
                     Fannie Mae, 5.50%-8.50%,
                     1/1/04-7/1/29 with a value of
                     $30,705,479 (cost $30,100,000) .......     $     30,100,000
- --------------------------------------------------------------------------------
Total Investments (total cost $990,324,352) - 101.8% ......        1,372,297,045
- --------------------------------------------------------------------------------
Liabilities, net of Cash, Receivables and Other Assets - (1.8%)     (24,942,183)
- --------------------------------------------------------------------------------
Net Assets - 100% .........................................     $  1,347,354,862
- --------------------------------------------------------------------------------

Summary of Investments by Country, June 30, 1999

Country              % of Investment Securities                     Market Value
- --------------------------------------------------------------------------------
Canada                                     4.3%                 $     59,583,001
Ireland                                    1.1%                       14,592,649
United Kingdom                             2.2%                       29,652,576
United States++                           92.4%                    1,268,468,819
- --------------------------------------------------------------------------------
Total                                    100.0%                 $  1,372,297,045

++Includes Short-Term Securities (90.2% excluding Short-Term Securities)

See Notes to Schedules of Investments.

6  Janus Aspen Series / June 30, 1999
<PAGE>

                                    Janus | Aspen Capital Appreciation Portfolio

[PHOTO]
Scott Schoelzel
portfolio manager

Janus Aspen Capital  Appreciation  Portfolio gained 25.68% for its Institutional
Shares and 25.38% for its  Retirement  Shares for the six months  ended June 30,
1999.  We're  pleased to report that these returns were more than double that of
the Portfolio's benchmark, the S&P 500 Index, which appreciated 12.38%.(1)

Before turning to a discussion of the Portfolio's performance, I'd like to touch
on the amount of cash the Portfolio is holding, which was in the range of 30% of
assets on the last day of the period. Let me assure you that, as always, cash is
a residual of the investment process.  Instead of buying stocks indiscriminately
at any price, we take a prudent approach to deploying our investors' money. That
means  our  cash  position  may  increase  from  time to time,  especially  when
volatility on the upside poses a challenge to uncovering new opportunities.

Speaking of market volatility, we experienced our fair share during the past six
months.  While  the  record-breaking  gains we saw at the end of 1998  continued
through the first  quarter,  the second  quarter was another  story  altogether.
Rising interest  rates,  fears of inflation,  and concerns that  growth-oriented
companies were overvalued caused the market to temporarily  stumble. At the same
time, the resurgence of Asia's  faltering  economy gave cyclical  stocks,  which
typically perform well during periods of recovery,  a short-lived  bounce.  This
market rotation into cyclicals ran out of steam, however, and growth stocks were
soon on top again,  reaffirming  our focus on  brand-name  companies  with great
business models, dominant franchises and exceptional management.

That  description  certainly  fits  Citigroup,  the  world's  largest  financial
services  firm.  After the company was beaten down  earlier this year on worries
that inflation  would spur interest rate hikes,  we took advantage of the dip to
opportunistically  build a significant position in Citigroup late in the period.
With a huge international  presence and powerful global brand,  Citigroup offers
sustainable  earnings growth at a very attractive  price,  and the prospects for
continued success appear strong.

Another  recognizable  brand  name is Nokia,  the  Finnish  leader  in  wireless
communications.  Benefiting from both innovative new products and cellular phone
subscriber growth that's expected to double in the next couple of years, Nokia's
stock price has soared during the past six months. As Nokia's market penetration
grows,  we're  confident  the  company  will  further  solidify  its  leadership
position.

Several equally compelling stories are emerging from some unexpected places. One
such story is General Electric,  a company known for its manufacturing  prowess,
but saddled with a somewhat  stodgy,  old-fashioned  image. In reality,  nothing
could be further from the truth. Under the direction of CEO Jack Welch,  today's
GE is aggressively embracing the power of the Web with a  direct-to-the-supplier
business model not unlike the one pioneered by Dell Computer. This new model has
turned GE into a true growth company - and a solid performer for us.

Retailing is another  area  presenting  exciting  potential.  With  unemployment
dropping to record lows and inflation still contained,  strong consumer spending
is powering a U.S.  economic  expansion that shows few signs of slowing down. In
fact,  the big news lately is that people are actually  spending  more than they
earn.  Against this backdrop,  we increased our positions in Costco, the leading
discount warehouse,  and Wal-Mart, the top discount retailer, and added Gap, the
popular  casual  clothing  chain.  All three  companies have benefited from this
nationwide spending spree, boosting the Portfolio's returns during the period.

Despite the  Portfolio's  noteworthy  gains,  there were a few  disappointments.
Specifically,  pharmaceutical stocks proved to be a big drag on performance.  We
sold our  stake in  Warner-Lambert,  which,  like  many  other  drug  companies,
declined on concerns of increased  governmental  regulation and rising  interest
rates, as well as safety worries over its diabetes drug, Rezulin. Still, we held
on to our position in Eli Lilly,  whose product pipeline  contains  exciting new
treatments that should support healthy earnings in the future.

Before  closing,  a  word  about  expectations.  Naturally,  we  set  very  high
expectations  for ourselves and, for the most part, we believe we've  delivered.
Nevertheless,  I urge you to try to keep your expectations in line with reality.
Reality  is that,  while an annual  investment  return  of 15% may seem  modest,
compounded over five years, it doubles your money.  So, while market  volatility
may  dampen  the  Portfolio's  returns  from  time to time,  the  real  proof of
performance is in the long-term results.

Thank you for your  continued  investment  in Janus Aspen  Capital  Appreciation
Portfolio.

Portfolio Asset Mix                  June 30, 1999        December 31, 1998
- --------------------------------------------------------------------------------
Equities                                     68.1%                    89.7%
  Foreign                                     6.2%                     5.9%
  Europe                                      3.5%                     5.9%
Top 10 Equities                              37.3%                    57.5%
Number of Stocks                                29                       23
Cash & Cash Equivalents                      31.9%                    10.3%
- --------------------------------------------------------------------------------

(1)  All returns include reinvested dividends.

Past performance does not guarantee future results.

                                           Janus Aspen Series / June 30, 1999  7
<PAGE>

Janus | Aspen Capital Appreciation Portfolio

Average Annual Total Return(1)
For the Periods Ended June 30, 1999 (unaudited)
- --------------------------------------------------------------------------------
Institutional Shares (Inception Date 5/1/97)
  1 Year                                                     51.60%
  From Inception                                             53.15%
- --------------------------------------------------------------------------------
S&P 500 Index
  1 Year                                                     22.76%
  From Portfolio Inception                                   30.19%
- --------------------------------------------------------------------------------
Retirement Shares (Inception Date 5/1/97)
  1 Year                                                     50.82%
  From Inception                                             52.42%
- --------------------------------------------------------------------------------

(1)  All returns reflect reinvested  dividends.  The Portfolio's  securities may
     differ significantly from the securities in the Index. Index returns do not
     include  taxes or  dividends  and interest  payments or operating  expenses
     necessary to maintain a portfolio  consisting of the same  securities  that
     are in the Index.  These returns do not reflect the charges and expenses of
     any particular  insurance product or qualified plan.  Investment return and
     principal value will fluctuate so that shares, when redeemed,  may be worth
     more or less than their  original cost.  The adviser  voluntarily  waives a
     portion of the Portfolio's  expenses.  Without such waiver, the Portfolio's
     total returns for each class would have been lower.  Past  performance does
     not guarantee future results.

SCHEDULE OF INVESTMENTS (unaudited)

Shares or Principal Amount                                        Market Value
- --------------------------------------------------------------------------------
Common Stock - 68.1%
Automotive - Cars and Light Trucks - 2.1%
      94,050       Ford Motor Co. .........................     $      5,307,947

Cable Television - 1.2%
      78,800       Comcast Corp. - Class A ................            3,028,875

Computer Data Security - 1.3%
      40,580       VeriSign, Inc.* ........................            3,500,024

Computer Software - 3.7%
     105,940       Microsoft Corp.* .......................            9,554,464

Computers - Memory Devices - 2.4%
     113,400       EMC Corp.* .............................            6,237,000

Computers - Micro - 3.7%
      74,175       IBM Corp. ..............................            9,587,119

Diversified Financial Services - 7.8%
     249,900       Citigroup, Inc. ........................           11,870,250
      81,570       Morgan Stanley, Dean Witter and Co. ....            8,360,925

                                                                      20,231,175

Diversified Operations - 6.0%
      73,935       General Electric Co. ...................            8,354,655
      74,565       Tyco International, Ltd. ...............            7,065,034

                                                                      15,419,689

Fiber Optics - 1.4%
     100,000       Metromedia Fiber Network, Inc. - Class A*           3,593,750

Internet Content - 0.8%
      15,970       Inktomi Corp.* .........................            2,085,083

Internet Software - 3.2%
      73,870       America Online, Inc.* ..................            8,162,635

Medical - Drugs - 3.3%
      58,195       Eli Lilly and Co. ......................     $      4,168,217
      15,865       MedImmune, Inc.* .......................            1,074,854
      20,769       Pfizer, Inc. ...........................            2,279,397
      11,300       Sepracor, Inc.* ........................              918,125

                                                                       8,440,593

Multimedia - 4.0%
     141,760       Time Warner, Inc. ......................           10,419,360

Networking Products - 3.5%
     140,844       Cisco Systems, Inc.* ...................            9,084,438

Retail - Apparel and Shoe - 2.9%
     150,000       Gap, Inc. ..............................            7,556,250

Retail - Building Products - 1.7%
      68,560       Home Depot, Inc. .......................            4,417,835

Retail - Discount - 5.9%
      60,445       Costco Companies, Inc.* ................            4,839,378
     214,800       Wal-Mart Stores, Inc. ..................           10,364,100

                                                                      15,203,478

Retail - Internet - 3.8%
      64,380       eBay, Inc.* ............................            9,721,380

Satellite Telecommunications - 0.9%
      14,960       EchoStar Communications Corp. - Class A*            2,295,425

Savings/Loan/Thrifts - 2.4%
     160,220       Telebanc Financial Corp.* ..............            6,208,525

Telecommunication Equipment - 3.5%
      98,310       Nokia Oyj (ADR) ........................            9,001,509

Telecommunication Services - 0.7%
      30,475       Level 3 Communications, Inc.* ..........            1,830,405

See Notes to Schedules of Investments.

8  Janus Aspen Series / June 30, 1999
<PAGE>

SCHEDULE OF INVESTMENTS (unaudited)

Shares or Principal Amount                                        Market Value
- --------------------------------------------------------------------------------
Telephone - Long Distance - 1.9%
      56,015       MCI WorldCom, Inc.* ....................     $      4,831,294
- --------------------------------------------------------------------------------
Total Common Stock (cost $141,929,082) ....................          175,718,253
- --------------------------------------------------------------------------------
Repurchase Agreement - 15.7%
$ 40,400,000       Morgan Stanley & Co., Inc., 5.10%,
                     dated 6/30/99, maturing 7/1/99,
                     to be repurchased at $40,405,723
                     collateralized by $54,445,032 in
                     Fannie Mae, 5.50%-8.50%, 1/1/04-
                     7/1/29 with a value of $41,212,670
                     (cost $40,400,000) ...................           40,400,000
- --------------------------------------------------------------------------------
U.S. Government Agencies - 15.2%
                   Fannie Mae
  15,000,000         4.86%, 9/7/99 ........................           14,856,900
                   Freddie Mac
  25,000,000         4.91%, 12/7/99 .......................           24,433,500
- --------------------------------------------------------------------------------
Total U.S. Government Agencies (cost $39,320,154) .........           39,290,400
- --------------------------------------------------------------------------------
Total Investments (total cost $221,649,236) - 99.0% .......          255,408,653
- --------------------------------------------------------------------------------
Cash, Receivables and Other Assets, net of Liabilities - 1.0%          2,691,855
- --------------------------------------------------------------------------------
Net Assets - 100% .........................................     $    258,100,508
- --------------------------------------------------------------------------------

Summary of Investments by Country, June 30, 3999

Country              % of Investment Securities                     Market Value
- --------------------------------------------------------------------------------
Bermuda                                    2.8%                 $      7,065,034
Finland                                    3.5%                        9,001,509
United States++                           93.7%                      239,342,110
- --------------------------------------------------------------------------------
Total                                    100.0%                 $    255,408,653

++Includes Short-Term Securities (62.5% excluding Short-Term Securities)

See Notes to Schedules of Investments.

                                           Janus Aspen Series / June 30, 1999  9
<PAGE>

Janus | Aspen International Growth Portfolio

[PHOTO]
Helen Young Hayes
portfolio manager

[PHOTO]
Laurence Chang
portfolio manager

Janus Aspen  International  Growth Portfolio  outpaced its benchmark for the six
months ended June 30, 1999,  returning 10.06% for its  Institutional  Shares and
9.78% for its  Retirement  Shares.  By comparison,  the Morgan  Stanley  Capital
International EAFE Index rose 3.97%.(1)

Given the mixed  performance of international  equity markets during the period,
we were  especially  pleased with the  Portfolio's  showing.  Helping to bolster
several  markets  were  improving  economies  in both  Asia and  Latin  America.
Particularly encouraging was renewed economic growth in Japan, indicating it may
finally be showing signs of emerging from its long recession.  Nonetheless, this
positive  picture was offset by the lagging  performance  of European  equities,
which  struggled  under the  pressure of weakness  in the new euro  currency,  a
rising interest rate environment, and conflict in Yugoslavia.

In reaction to the budding  recoveries  of several  emerging  market  economies,
investors temporarily shifted out of growth stocks and into the more cyclical or
economically  sensitive  areas.  However,  even in the  context of an  improving
global economy,  we generally don't find many cyclical  stocks  attractive.  Our
long-term  view is that  the  commodity-like  nature  of the  cyclical  products
developed  and  marketed by these  companies  makes it  unlikely  they will ever
sustain  strong  rates of return.  Therefore,  we  continue to focus on powerful
growth opportunities we believe transcend fluctuations in individual economies.

One  compelling  area  is  wireless  communications,  which  benefits  from  the
increasing  convenience  and  affordability  of  cellular  phone  use.  Although
cellular subscriber growth rates are accelerating worldwide, in China, demand is
particularly  strong.  As such,  cellular service provider China Telecom,  which
already  enjoys a market share of more than 90%,  posted  solid  returns for the
Portfolio.   Another  strong  performer  was  Nokia,  which  continued  to  gain
recognition  for  its  superior  product   offerings  in  wireless  handset  and
infrastructure base-station equipment.  Mannesmann and NTT Mobile Communications
Network also aided our  performance.  Mannesmann  owns Germany's  largest mobile
phone  network,  while NTT Mobile,  one of our newer  holdings,  is the dominant
Japanese  cellular  provider as well as a pioneer in Japan's rapidly  developing
wireless data market.

Growth trends in wireless  communications also contributed to the success of our
semiconductor  holdings.  Applications  for  semiconductors  are  as  varied  as
wireless  phones,  pagers,  CD players  and VCRs,  to name a few.  Consequently,
strong  demand  for these  electronic  components  helped  boost our  returns in
leading  chip  maker  Philips  Electronics  and ASM  Lithography,  a company  we
recently  added to the  Portfolio  and a  provider  of the  technological  tools
necessary in the production of semiconductor chips.

The strategic  value of cable  franchises is another  concept we followed during
the period.  Broadband technology,  increasingly deployed by cable companies, is
allowing  them to  deliver  value-added  services  such as  high-speed  Internet
access,  telephony and video-on-demand into consumers' homes through an upgraded
platform. Our enthusiasm for this revitalized business has convinced us to pound
the pavement in search of the most compelling opportunities in this industry. As
such, we recently added positions in United Pan-Europe Communications, Britain's
NTL, and Canada's Shaw Communications, all leaders in their respective markets.

While we were pleased with our overall results for the period, we did experience
a few  disappointments.  A rising interest rate environment in both the U.S. and
in Europe negatively  impacted  valuations for several of our financial services
positions,  including  Dutch  insurer  Aegon,  which  declined  despite  meeting
earnings  estimates.  However,  we believe  Aegon's  strong  business model will
enable it to maintain its leadership  position in the Dutch insurance  industry,
and therefore increased our holdings.

Higher U.S.  interest rates also hurt several of our  pharmaceutical  stocks, as
did a slowdown in new product  launches  and concerns  that the U.S.  government
could take a more active role in regulating drug prices. We consequently reduced
the Portfolio's  overall drug  weighting,  liquidating our positions in Elan PLC
and trimming our exposure to Swiss drug giant Roche Holding.

Going  forward,  our  outlook  for  international  financial  markets  is one of
cautious optimism.  While global economic prospects certainly appear better than
they  were  at the  start  of the  year,  they  remain  vulnerable  to  currency
pressures,  especially  in emerging  markets,  and to the  potential  for higher
interest  rates in the U.S.  Therefore,  we remain focused on companies that are
either taking  advantage of growth trends that transcend  changes in the economy
or are undergoing powerful  microeconomic changes,  including  restructuring and
cost reductions, that can improve their cash flow and earnings growth.

Thank you for your  continued  investment  in Janus Aspen  International  Growth
Portfolio.

Portfolio Asset Mix                  June 30, 1999        December 31, 1998
- --------------------------------------------------------------------------------
Equities                                     90.3%                    91.0%
  Foreign                                    84.7%                    89.3%
Top 10 Equities                              22.6%                    26.4%
Number of Stocks                               123                      146
Cash, Cash Equivalents
  & Fixed-Income Securities                   9.7%                     9.0%
- --------------------------------------------------------------------------------

(1)  All returns include reinvested dividends.  Net dividends reinvested are the
     dividends that remain to be reinvested  after foreign tax obligations  have
     been met. Such obligations vary from country to country.

Past performance does not guarantee future results.

10  Janus Aspen Series / June 30, 1999
<PAGE>

Average Annual Total Return(1)
For the Periods Ended June 30, 1999 (unaudited)
- --------------------------------------------------------------------------------
Institutional Shares (Inception Date 5/2/94)
  1 Year                                                      5.57%
  5 Year                                                     20.66%
  From Inception                                             19.11%
- --------------------------------------------------------------------------------
Morgan Stanley Capital International EAFE Index(2)
  1 Year                                                      7.62%
  5 Year                                                      8.21%
  From Inception Date of Institutional Shares                 8.11%
- --------------------------------------------------------------------------------
Retirement Shares (Inception Date 5/1/97)
  1 Year                                                      5.25%
  5 Year                                                     19.61%
  From Portfolio Inception                                   18.08%
- --------------------------------------------------------------------------------
Returns shown for  Retirement  Shares for periods  prior to their  inception are
derived from the historical  performance of  Institutional  Shares,  adjusted to
reflect the higher operating expenses of Retirement Shares.

(1)  All returns reflect reinvested  dividends.  The Portfolio's  securities may
     differ significantly from the securities in the Index. Index returns do not
     include  taxes or  dividends  and interest  payments or operating  expenses
     necessary to maintain a portfolio  consisting of the same  securities  that
     are in the Index.  These returns do not reflect the charges and expenses of
     any particular  insurance product or qualified plan.  Investment return and
     principal value will fluctuate so that shares, when redeemed,  may be worth
     more or less than their  original cost.  The adviser  voluntarily  waives a
     portion of the Portfolio's  expenses.  Without such waiver, the Portfolio's
     total returns for each class would have been lower.  Past  performance does
     not guarantee future results.

(2)  Net dividends  reinvested  are the  dividends  that remain to be reinvested
     after foreign tax  obligations  have been met. Such  obligations  vary from
     country to country.  EAFE stands for Europe,  Australasia and the Far East.
     Neither  the U.S.  market nor the  emerging  markets of Latin  America  and
     Eastern Europe are represented in EAFE.

SCHEDULE OF INVESTMENTS (unaudited)

Shares or Principal Amount                                        Market Value
- --------------------------------------------------------------------------------
Common Stock - 86.7%
Advertising Agencies - 1.3%
     632,959       WPP Group PLC** ........................     $      5,337,873

Athletic Footwear - 0.2%
       9,446       Adidas - Salomon A.G.** ................              937,609

Audio and Video Products - 1.3%
      47,000       Sony Corp.** ...........................            5,067,494

Automotive - Cars and Light Trucks - 1.3%
      13,726       DaimlerChrysler A.G.** .................            1,189,040
       7,526       DaimlerChrysler A.G. (ADR)** ...........              668,873
      78,000       Honda Motor Co., Ltd.** ................            3,305,954

                                                                       5,163,867

Automotive - Truck Parts and Equipment - 0.2%
      11,669       Valeo S.A.** ...........................              962,713

Brewery - 1.8%
     672,780       Foster's Brewing Group, Ltd. ...........            1,896,206
      55,612       Heineken N.V.** ........................            2,847,482
     213,000       Kirin Brewery Co., Ltd.** ..............            2,551,717

                                                                       7,295,405

Broadcast Services and Programming - 1.7%
      55,320       Grupo Televisa S.A. (GDR)* .............            2,479,028
      67,195       United International Holdings, Inc. - Class A       4,544,062

                                                                       7,023,090

Cable Television - 2.8%
     252,045       Le Groupe Videotron ltee.** ............     $      3,967,877
     324,696       Rogers Communications, Inc. - Class B*,**           5,188,386
     473,281       TeleWest Communications PLC*,** ........            2,126,194

                                                                      11,282,457

Cellular Telecommunications - 6.9%
   2,400,000       China Telecom, Ltd.*,** ................            6,666,141
         955       NTT Mobile Communications Network, Inc.**          12,939,935
      95,623       Orange PLC*,** .........................            1,397,272
     323,526       Telecom Italia Mobile S.p.A.** .........            1,933,130
      42,780       Telesp Celular Participacoes S.A. (ADR)             1,144,365
     103,040       Vodafone AirTouch PLC** ................            2,040,020
       9,422       Vodafone AirTouch PLC (ADR)** ..........            1,858,588

                                                                      27,979,451

Commercial Banks - 1.7%
      62,806       Argentaria, Caja Postal y Banco
                   Hipotecario de Espana S.A.** ...........            1,430,771
       1,042       Julius Baer Holding A.G. - Class B** ...            2,969,310
      23,733       Toronto-Dominion Bank** ................            1,070,356
     275,501       Unicredito Italiano S.p.A.** ...........            1,211,757

                                                                       6,682,194

See Notes to Schedules of Investments

                                          Janus Aspen Series / June 30, 1999  11
<PAGE>

Janus | Aspen International Growth Portfolio

SCHEDULE OF INVESTMENTS (unaudited)

Shares or Principal Amount                                        Market Value
- --------------------------------------------------------------------------------
Computer Services - 3.4%
      18,453       Atos S.A.*,** ..........................     $      1,883,976
      22,054       Cap Gemini S.A.** ......................            3,466,136
     119,023       Getronics N.V**,+ ......................            4,578,392
     343,415       Logica PLC** ...........................            3,626,878
       3,912       WM-Data A.B. - Class B .................              149,086

                                                                      13,704,468

Computer Software - 0.6%
      56,067       Tieto Corp. - Class B** ................            2,335,941

Computers - Integrated Systems - 2.0%
      20,920       ASM Lithography Holding N.V.*,** .......            1,210,313
      11,695       ASM Lithography Holding N.V. (ADR)*,** .              694,391
      13,110       Equant N.V.*,** ........................            1,208,686
      15,589       Equant N.V. - New York Shares*,** ......            1,467,315
     124,000       Fujitsu, Ltd.** ........................            2,494,626
      94,035       SEMA Group PLC** .......................              906,781
      55,261       Tecnost S.p.A.*,** .....................              136,489

                                                                       8,118,601
Cosmetics and Toiletries - 1.7%
     239,000       Kao Corp.** ............................            6,713,696

Distribution and Wholesale - 1.1%
      22,800       Softbank Corp.** .......................            4,617,033

Diversified Operations - 6.5%
     303,941       Hays PLC** .............................            3,164,470
       3,951       Reliance Industries, Ltd. (GDR)*,+ .....               39,708
     408,758       Rentokil Initial PLC** .................            1,594,705
      85,570       Seagram Company, Ltd. ..................            4,310,589
      86,575       Tyco International, Ltd. ...............            8,202,981
     113,031       Vivendi** ..............................            9,156,236

                                                                      26,468,689
Electronic Components - 2.2%
      57,075       Koninklijke (Royal) Phillips Electronics N.V.**     5,629,917
      33,402       Koninklijke (Royal) Phillips Electronics N.V.
                     - New York Shares** ..................            3,369,427

                                                                       8,999,344

Electronic Components - Semiconductors - 0.8%
      31,690       Galileo Technology, Ltd.* ..............            1,435,953
      51,055       Taiwan Semiconductor Manufacturing
                     Co., Ltd. (ADR)* .....................            1,735,870

                                                                       3,171,823

Fiber Optics - 0.5%
      24,912       JDS FITEL, Inc.*,** ....................            2,078,738

Food - Catering - 1.0%
     410,018       Compass Group PLC** ....................            4,065,299

Food - Retail - 0.4%
      12,270       Carrefour S.A.** .......................            1,803,153

Hotels and Motels - 0.5%
       7,479       Accor S.A.** ...........................            1,878,087

Human Resources - 0.8%
     303,308       Capita Group PLC** .....................            3,138,755

Internet Software - 0.3%
      21,380       Pacific Internet, Ltd.* ................            1,012,878

Investment Management and Advisory Services - 0.2%
     104,715       Amvescap PLC** .........................              931,776

Life and Health Insurance - 0.5%
     125,055       Prudential Corp. PLC** .................            1,849,025

Machinery - General Industrial - 3.6%
      98,660       Mannesmann A.G.** ......................     $     14,722,544

Medical - Drugs - 5.2%
      82,325       Pharmacia & Upjohn, Inc. ...............            4,677,089
         362       Roche Holding A.G.** ...................            3,721,084
      68,632       Sanofi-Synthelabo S.A.** ...............            2,912,525
      93,550       SmithKline Beecham PLC** ...............            1,215,831
      38,460       SmithKline Beecham PLC (ADR)** .........            2,540,764
     129,000       Takeda Chemical Industries** ...........            5,979,122

                                                                      21,046,415

Metal Processors and Fabricators - 1.2%
     442,976       Assa Abloy A.B. - Class B ..............            4,793,580

Money Center Banks - 3.8%
     152,404       Banca Commerciale Italiana** ...........            1,113,706
   1,269,662       Banca di Roma** ........................            1,831,804
     149,013       Banco Bilbao Vizcaya S.A.** ............            2,152,958
     249,978       Banco Santander Central Hispano S.A.** .            2,603,733
     175,000       Development Bank of Singapore, Ltd. ....            2,138,072
     311,000       Fuji Bank, Ltd.** ......................            2,168,641
      49,600       HSBC Holdings PLC*,** ..................            1,809,190
       9,356       ING Groep N.V.** .......................              506,550
      89,685       Lloyds TSB Group PLC** .................            1,215,786

                                                                      15,540,440

Mortgage Banks - 0.9%
      39,919       Deutsche Pfandbriefbank A.G.** .........            3,622,727

Multi-Line Insurance - 1.8%
      33,052       Aegon N.V.** ...........................            2,397,922
      37,839       Assicurazioni Generali** ...............            1,312,710
       7,838       Axa** ..................................              956,232
       4,233       Zurich Allied A.G.** ...................            2,445,168

                                                                       7,112,032

Multimedia - 1.7%
      37,540       News Corp., Ltd. (ADR) .................            1,325,631
     156,102       Publishing & Broadcasting, Ltd. ........            1,030,174
     115,017       Shaw Communications, Inc. - Class B** ..            4,530,590

                                                                       6,886,395
Oil Companies - Integrated - 0.6%
      15,871       Elf Aquitaine S.A.** ...................            2,329,069

Publishing - Periodicals - 2.5%
     119,817       Talentum - Class B** ...................            1,828,746
     207,981       Wolters Kluwer N.V.** ..................            8,279,120

                                                                      10,107,866

Retail - Diversified - 0.5%
      33,000       Ito-Yokado Co., Ltd.** .................            2,208,431

Retail - Restaurants - 0.3%
     226,922       TelePizza S.A.*,** .....................            1,174,772

Security Services - 2.1%
     578,488       Securitas A.B. - Class B ...............            8,641,517

Telecommunication Equipment - 4.8%
      66,808       Nokia Oyj** ............................            5,856,264
      85,540       Nokia Oyj (ADR)** ......................            7,832,256
      24,770       Nortel Networks Corp. ..................            2,150,346
      22,961       Telefonaktiebolaget L.M. Ericsson - Class B           735,952
      87,254       Telefonaktiebolaget L.M. Ericsson - Class B
                     (ADR) ................................            2,873,929

                                                                      19,448,747

See Notes to Schedules of Investments.

12  Janus Aspen Series / June 30, 1999
<PAGE>

Shares or Principal Amount                                       Market Amount
- --------------------------------------------------------------------------------
Telecommunication Services - 7.3%
   1,085,275       Cable & Wireless Optus, Ltd.* ..........     $      2,471,184
     338,522       COLT Telecom Group PLC*,** .............            7,099,604
     142,964       Energis PLC*,** ........................            3,409,608
      36,660       Global TeleSystems Group, Inc.* ........            2,969,460
      56,930       NTL, Inc.* .............................            4,906,654
         268       NTT Data Corp.** .......................            2,130,074
     112,890       SK Telecom Co., Ltd. (ADR) .............            1,919,130
      82,865       United Pan-Europe Communications N.V.*,**           4,495,004

                                                                      29,400,718

Telephone - Integrated - 6.3%
     153,839       British Telecommunications PLC** .......            2,584,042
          37       Nippon Telegraph & Telephone Corp.** ...              431,028
      46,515       Sonera Group Oyj** .....................            1,016,956
      10,639       Swisscom A.G.** ........................            4,003,509
      34,900       Telecom Argentina Stet S.A. (ADR) ......              933,575
      33,355       Telefonica de Argentina S.A. (ADR) .....            1,046,513
     164,387       Telefonica S.A.*,** ....................            7,918,631
       6,392       Telefonica S.A. (ADR)*,** ..............              940,473
      74,100       Telefonos de Mexico S.A. (ADR) .........            5,988,206
      13,295       Viatel, Inc.* ..........................              746,182

                                                                      25,609,115

Television - 0.5%
      84,957       Modern Times Group A.B. - Class B* .....            1,843,688

Therapeutics - 0.8%
      58,695       QLT PhotoTherapeutics, Inc.* ...........            3,228,225

Transportation - Air Freight - 0.2%
      36,811       TNT Post Group N.V.** ..................              878,824

Travel Services - 0.1%
          97       Kuoni Reisen A.G.*,** ..................              374,063

Water - 0.8%
      17,258       Suez Lyonnaise des Eaux** ..............            3,112,816
- --------------------------------------------------------------------------------
Total Common Stock (cost $268,348,197) ....................          350,701,443
- --------------------------------------------------------------------------------
Foreign Bond - 0.2%
EUR
     613,350       Tecnost International N.V., 4.487%
                     company guaranteed notes
                     due 6/23/04** (cost $632,097) ........              642,272
- --------------------------------------------------------------------------------
Preferred Stock - 3.6%
Automotive - Cars and Light Trucks - 0.9%
       1,577       Porsche A.G.** .........................            3,708,000

Broadcast Services and Programming - 0.9%
      69,060       UnitedGlobalCom, Inc., convertible, 7.00%           3,453,000

Diversified Financial Services - 0.4%
       3,309       Marschollek, Lautenschlaeger und
                     Partner A.G.** .......................            1,576,565

Telephone - Integrated - 1.4%
      61,075       Telecomunicacoes Brasileiras S.A. (ADR)             5,508,202
- --------------------------------------------------------------------------------
Total Preferred Stock (cost $12,437,468) ..................           14,245,767
- --------------------------------------------------------------------------------
Rights - 0%
     442,976       Assa Abloy A.B.* (cost $0) .............     $         93,787
- --------------------------------------------------------------------------------
Repurchase Agreement - 8.5%
$ 34,500,000       Morgan Stanley & Co., Inc.
                     5.10%, dated 6/30/99, maturing 7/1/99,
                     to be repurchased at $34,504,888
                     collateralized by $46,493,901 in
                     Fannie Mae, 5.50%-8.50%,
                     1/1/04-7/1/29 with a value of
                     $35,193,988 (cost $34,500,000) .......           34,500,000
- --------------------------------------------------------------------------------
U.S. Government Obligation - 0.2%
     950,000       U.S. Treasury Bill
                     4.30%, 7/22/99
                     (amortized cost $947,534) ............              947,534
- --------------------------------------------------------------------------------
Total Investments (total cost $316,865,296) - 99.2% .......          401,130,803
- --------------------------------------------------------------------------------
Cash, Receivables and Other Assets, net of Liabilities - 0.8%          3,338,462
- --------------------------------------------------------------------------------
Net Assets - 100% .........................................     $    404,469,265
- --------------------------------------------------------------------------------

See Notes to Schedules of Investments.

                                          Janus Aspen Series / June 30, 1999  13
<PAGE>

Janus | Aspen International Growth Portfolio

Summary of Investments by Country, June 30, 1999

Country              % of Investment Securities                     Market Value
- --------------------------------------------------------------------------------
Argentina                                  0.5%                 $      1,980,088
Australia                                  1.7%                        6,723,194
Bermuda                                    2.0%                        8,202,981
Brazil                                     1.7%                        6,652,566
Canada                                     6.6%                       26,525,106
Finland                                    4.7%                       18,870,163
France                                     7.1%                       28,460,944
Germany                                    6.6%                       26,425,359
Hong Kong                                  2.1%                        8,475,331
India                                       --                            39,708
Israel                                     0.4%                        1,435,953
Italy                                      1.9%                        7,539,596
Japan                                     12.6%                       50,607,751
Mexico                                     2.1%                        8,467,233
Netherlands                                9.5%                       38,205,614
Singapore                                  0.8%                        3,150,950
South Korea                                0.5%                        1,919,130
Spain                                      4.0%                       16,221,336
Sweden                                     4.8%                       19,131,538
Switzerland                                3.4%                       13,513,134
Taiwan                                     0.4%                        1,735,870
United Kingdom                            12.0%                       48,244,692
United States++                           14.6%                       58,602,566
- --------------------------------------------------------------------------------
Total                                    100.0%                 $    401,130,803

++Includes Short-Term Securities (5.8% excluding Short-Term Securities)

Forward Currency Contracts, Open at June 30, 1999

Currency Sold and                  Currency            Currency     Unrealized
Settlement Date                  Units Sold     Value in $ U.S.    Gain/(Loss)
- --------------------------------------------------------------------------------
British Pound 10/8/99            10,200,000         $16,100,700       $342,720
British Pound 10/14/99              900,000           1,420,740         36,720
British Pound 12/9/99             7,080,000          11,184,984        162,606
Canadian Dollar 10/8/99           5,800,000           3,966,083          3,585
Canadian Dollar 11/18/99          1,100,000             752,703          4,101
Euro 7/15/99                        110,000             113,630         15,191
Euro 7/22/99                      4,800,000           4,956,000        694,080
Euro 7/28/99                        900,000             928,800        129,420
Euro 8/12/99                      3,050,000           3,143,940        458,110
Euro 8/27/99                      7,400,000           7,619,040      1,055,980
Hong Kong Dollar 5/7/01          55,000,000           6,928,610       (24,501)
Japanese Yen 9/16/99            359,800,000           2,973,898        135,869
Japanese Yen 10/8/99          1,700,000,000          14,051,677        509,063
Japanese Yen 10/14/99           500,000,000           4,132,884        156,384
Japanese Yen 10/15/99           150,000,000           1,239,867         38,905
Japanese Yen 10/21/99           509,000,000           4,207,321        192,631
Japanese Yen 11/18/99           450,700,000           3,725,582        159,340
Japanese Yen 12/3/99             50,000,000             413,320          3,347
Swiss Franc 10/8/99               2,200,000           1,439,131         68,234
Swiss Franc 10/21/99                 50,000              32,757          1,608
Swiss Franc 11/18/99                185,000             121,599          7,592
Swiss Franc 12/3/99                 165,000             108,638          3,607
- --------------------------------------------------------------------------------
Total                                               $89,561,904     $4,154,592

See Notes to Schedules of Investments.

14  Janus Aspen Series / June 30, 1999
<PAGE>

                                        Janus | Aspen Worldwide Growth Portfolio

[PHOTO]
Helen Young Hayes
portfolio manager

For the six months ended June 30, 1999,  Janus Aspen Worldwide  Growth Portfolio
outperformed  its benchmark,  the Morgan  Stanley  Capital  International  World
Index. The Portfolio returned 12.75% for its Institutional Shares and 12.53% for
its Retirement Shares, compared with an 8.51% gain posted by the Index.(1)

International  markets moved modestly higher over the past six months, while the
U.S.  stock  market  gained  substantially.  The solid  performance  of domestic
equities  occurred  despite the  volatility  brought on by rising U.S.  interest
rates. In Europe, however, upward pressure on long-term rates hindered equities,
although  Europe's economy did show some subtle signs of improvement late in the
period.  Meanwhile,  Asian and Latin American markets bounced back considerably,
indicating  the worst may be over for economies in those  regions.  Most notable
was progress in Japan,  as it appeared to finally be emerging  from its economic
recession.

The  Portfolio's  solid  returns  can be  attributed  to our  focus  on  finding
companies  capable  of  generating  robust  earnings  in a variety  of  economic
conditions.  Many of these businesses are tapping into powerful growth trends at
work both here in the U.S. economy and abroad.

The  proliferation of the Internet,  for example,  benefited several of our U.S.
technology  holdings,  one  standout  being  Cisco  Systems.  Not  only is Cisco
building the  networking  equipment  that helps  support the  Internet,  but its
products are also quickly becoming the industry standard.  In addition,  a large
new market is  emerging  as the  global  telecommunications  industry  begins to
transition networks to Internet-based standards.

Increasing  Internet  acceptance  and  utilization  also  aided the  Portfolio's
telecommunications  stocks. A standout in this industry was MCI WorldCom,  which
continues to be a leader in long-distance telephone service, as well as data and
Internet communications services.  Furthermore,  MCI plans to expand its menu of
offerings to include high-speed Internet access via wireless cable.

Also  contributing  to the  Portfolio's  gains  were  several  of  its  wireless
communications holdings. One company that is emerging as an early leader in this
market is Japan's NTT Mobile  Communications.  NTT Mobile is at the forefront of
efforts  to  develop  wireless  technology  and was among  the first to  provide
services  that allow  customers to check their e-mail or surf the Internet  over
cellular  handsets.  While  these  services  are just now  being  introduced  to
customers,  interest in them is exceptionally high. Another strong performer was
Nokia.  Already the leader in the cellular phone  equipment  industry,  Nokia is
poised to capitalize on the expected doubling of worldwide  cellular  subscriber
growth by 2001.

The  strategic  value of cable  franchises  is another  concept we  continued to
follow   during  the  period.   Because   cable  firms  have  already   extended
high-capacity  networks into consumers' homes, these companies are viewed as the
vital connection in the delivery of broadband services.  Among our favorite U.S.
cable holdings were market leaders Time Warner and Comcast.  We also  identified
several  exciting  opportunities in other  countries,  including  Britain's NTL,
Rogers Communications in Canada and United Pan-Europe Communications.

With the growth of digital cable and  broadband  Internet  services,  we believe
media content will take on greater  significance.  As a result, we have invested
in content providers such as The Seagram Company,  which owns Universal Pictures
and Universal Music Group,  the world's  largest music company.  We also added a
position in Viacom,  owner of ShowTime  Networks,  MTV and other  valuable cable
brands.

Despite the Portfolio's  impressive  performance,  a few of our holdings did not
meet our  expectations.  Cap  Gemini and  Getronics,  two  European  information
technology  companies,  were  hurt  by  concerns  over a  potential  Y2K-related
slowdown  in  corporate  software  spending.  However,  continuing  pressure  on
businesses to increase productivity, as well as the growing focus on e-commerce,
should keep investments in information technology robust.  Therefore,  we viewed
the  decline  in  these  companies'  stocks  as  temporary  and  used  it  as an
opportunity to add to both positions.

Another disappointment was U.S. drug giant Warner-Lambert. Pharmaceutical stocks
in general were hurt by speculation about U.S. government price controls and the
move toward more  economically  sensitive stocks.  However,  we remain generally
positive on the fundamentals in this industry as new drug development techniques
should continue to accelerate growth.

Going forward,  our outlook for the global economy is one of cautious  optimism.
Nonetheless,  we  will  remain  focused  on  companies  we  believe  capable  of
generating superior performance in any economic environment.

Thank you for your investment in Janus Aspen Worldwide Growth Portfolio.

Portfolio Asset Mix                  June 30, 1999        December 31, 1998
- --------------------------------------------------------------------------------
Equities                                     91.5%                    90.0%
  Foreign                                    61.3%                    65.8%
Top 10 Equities                              28.3%                    25.9%
Number of Stocks                               133                      156
Cash, Cash Equivalents
  & Fixed-Income Securities                   8.5%                    10.0%
- --------------------------------------------------------------------------------

(1)  All returns include reinvested dividends.  Net dividends reinvested are the
     dividends that remain to be reinvested  after foreign tax obligations  have
     been met. Such obligations vary from country to country.

Past performance does not guarantee future results.

                                          Janus Aspen Series / June 30, 1999  15
<PAGE>

Janus | Aspen Worldwide Growth Portfolio

Average Annual Total Return(1)
For the Periods Ended June 30, 1999 (unaudited)
- --------------------------------------------------------------------------------
Institutional Shares (Inception Date 9/13/93)
  1 Year                                                     14.44%
  5 Year                                                     24.75%
  From Inception                                             24.31%
- --------------------------------------------------------------------------------
Morgan Stanley Capital International World Index(2)
  1 Year                                                     15.67%
  5 Year                                                     16.75%
  From Inception Date of Institutional Shares                15.12%
- --------------------------------------------------------------------------------
Retirement Shares (Inception Date 5/1/97)
  1 Year                                                     13.90%
  5 Year                                                     24.02%
  From Portfolio Inception                                   23.40%
- --------------------------------------------------------------------------------
Returns shown for  Retirement  Shares for periods  prior to their  inception are
derived from the historical  performance of  Institutional  Shares,  adjusted to
reflect the higher operating expenses of Retirement Shares.

(1)  All returns reflect reinvested  dividends.  The Portfolio's  securities may
     differ significantly from the securities in the Index. Index returns do not
     include  taxes or  dividends  and interest  payments or operating  expenses
     necessary to maintain a portfolio  consisting of the same  securities  that
     are in the Index.  These returns do not reflect the charges and expenses of
     any particular  insurance product or qualified plan.  Investment return and
     principal value will fluctuate so that shares, when redeemed,  may be worth
     more or less than their  original cost.  The adviser  voluntarily  waives a
     portion of the Portfolio's  expenses.  Without such waiver, the Portfolio's
     total returns for each class would have been lower.  Past  performance does
     not guarantee future results.

(2)  Net dividends  reinvested  are the  dividends  that remain to be reinvested
     after foreign tax  obligations  have been met. Such  obligations  vary from
     country to country.

SCHEDULE OF INVESTMENTS (unaudited)

Shares or Principal Amount                                        Market Value
- --------------------------------------------------------------------------------
Common Stock - 89.9%
Advertising Agencies - 0%
      36,544       WPP Group PLC** ........................     $        308,183

Applications Software - 0.3%
     128,375       Intuit, Inc.* ..........................           11,569,797

Athletic Footwear - 0.2%
      94,886       Adidas - Salomon A.G.** ................            9,418,378

Audio and Video Products - 0.7%
     228,700       Sony Corp.** ...........................           24,658,209

Automotive - Cars and Light Trucks - 0.9%
     131,048       DaimlerChrysler A.G.** .................           11,352,275
      68,369       DaimlerChrysler A.G. (ADR)** ...........            6,076,295
     358,000       Honda Motor Co., Ltd.** ................           15,173,482

                                                                      32,602,052

Automotive - Truck Parts and Equipment - 0.2%
     101,947       Valeo S.A.** ...........................            8,410,807

Brewery - 1.3%
     530,105       Heineken N.V.** ........................           27,142,783
   1,806,000       Kirin Brewery Co., Ltd.** ..............           21,635,683

                                                                      48,778,466

Broadcast Services and Programming - 1.7%
     868,465       AT&T Corp./Liberty Media Group - Class A*          31,916,089
     326,415       Clear Channel Communications, Inc.* ....           22,502,234
     204,850       Grupo Televisa S.A. (GDR)* .............            9,179,841

                                                                      63,598,164

Cable Television - 2.3%
   1,379,760       Comcast Corp. - Class A ................     $     53,034,525
     262,035       MediaOne Group, Inc.* ..................           19,488,853
     932,536       Rogers Communications, Inc. - Class B*,**          14,901,190

                                                                      87,424,568

Cellular Telecommunications - 7.0%
  14,688,000       China Telecom, Ltd.*,** ................           40,796,782
       7,700       NTT Mobile Communications Network, Inc.**         104,332,456
     891,216       Orange PLC*,** .........................           13,022,716
     476,285       Sprint Corp./PCS Group* ................           27,207,781
   3,016,678       Telecom Italia Mobile S.p.A.** .........           18,025,224
   1,015,915       Vodafone AirTouch PLC** ................           20,113,418
     218,450       Vodafone AirTouch PLC (ADR)** ..........           43,089,263

                                                                     266,587,640

Commercial Banks - 0.7%
     609,526       Argentaria, Caja Postal y Banco
                     Hipotecario de Espana S.A.** .........           13,885,489
       4,089       Julius Baer Holding A.G. - Class B** ...           11,652,120

                                                                      25,537,609

Commercial Services - 0.6%
     693,630       Paychex, Inc. ..........................           22,109,456

See Notes to Schedules of Investments.

16  Janus Aspen Series / June 30, 1999
<PAGE>

SCHEDULE OF INVESTMENTS (unaudited)

Shares or Principal Amount                                        Market Value
- --------------------------------------------------------------------------------
Computer Services - 3.5%
     131,228       Atos S.A.*,** ..........................     $     13,397,844
     212,167       Cap Gemini S.A.** ......................           33,345,407
   1,106,569       Getronics N.V.**,+ .....................           42,565,776
   3,458,021       Logica PLC** ...........................           36,520,886
     134,324       WM-Data A.B. - Class B .................            5,119,064

                                                                     130,948,977

Computer Software - 3.0%
   1,066,185       Microsoft Corp.* .......................           96,156,560
     444,287       Tieto Corp. - Class B** ................           18,510,503

                                                                     114,667,063

Computers - Integrated Systems - 1.8%
     136,447       ASM Lithography Holding N.V.*,** .......            7,894,054
     112,105       ASM Lithography Holding N.V. (ADR)*,** .            6,656,234
     123,632       Equant N.V.*,** ........................           11,398,341
     141,720       Equant N.V. - New York Shares*,** ......           13,339,395
   1,132,000       Fujitsu, Ltd.** ........................           22,773,525
     411,646       SEMA Group PLC** .......................            3,969,509
     916,446       Tecnost S.p.A.*,** .....................            2,263,527

                                                                      68,294,585

Computers - Memory Devices - 0.3%
     213,350       EMC Corp.* .............................           11,734,250

Computers - Micro - 0.7%
     409,370       Sun Microsystems, Inc.* ................           28,195,359

Cosmetics and Toiletries - 1.6%
     730,210       Estee Lauder Companies, Inc. - Class A .           36,601,776
     843,000       Kao Corp.** ............................           23,680,526

                                                                      60,282,302

Distribution and Wholesale - 0.2%
      46,200       Softbank Corp.** .......................            9,355,568

Diversified Operations - 7.7%
   2,823,475       Hays PLC** .............................           29,396,501
   3,861,789       Rentokil Initial PLC** .................           15,066,162
     356,195       Seagram Company, Ltd. ..................           17,943,323
   1,655,100       Tyco International, Ltd. ...............          156,820,725
     900,228       Vivendi** ..............................           72,924,244

                                                                     292,150,955

Electronic Components - 2.0%
     438,552       Koninklijke (Royal) Philips Electronics N.V.**     43,259,281
     330,447       Koninklijke (Royal) Philips Electronics N.V.
                     - New York Shares** ..................           33,333,841

                                                                      76,593,122

Finance - Credit Card - 0.7%
     206,615       American Express Co. ...................     $     26,885,777

Finance - Mortgage Loan Banker - 0.4%
     203,660       Fannie Mae .............................           13,925,253

Food - Catering - 0.5%
   1,902,740       Compass Group PLC** ....................           18,865,528

Food - Retail - 1.0%
     178,278       Carrefour S.A.** .......................           26,199,068
     366,320       Kroger Co.* ............................           10,234,065

                                                                      36,433,133

Hotels and Motels - 0.2%
      34,199       Accor S.A.** ...........................            8,587,873

Human Resources - 0.5%
   1,703,956       Capita Group PLC** .....................           17,633,234

Internet Software - 0.3%
     111,090       America Online, Inc.* ..................           12,275,445

Investment Management and Advisory Services - 0.2%
     709,883       Amvescap PLC** .........................            6,316,690

Life and Health Insurance - 0.4%
   1,110,634       Prudential Corp. PLC** .................           16,421,494

Machinery - General Industrial - 3.0%
     765,493       Mannesmann A.G.** ......................          114,230,738

Medical - Biomedical and Genetic - 0.5%
     288,115       Amgen, Inc.* ...........................           17,539,001

Medical - Drugs - 6.3%
     228,510       American Home Products Corp. ...........           13,139,325
     210,355       Bristol-Myers Squibb Co. ...............           14,816,880
     165,255       Pfizer, Inc. ...........................           18,136,736
     747,990       Pharmacia & Upjohn, Inc. ...............           42,495,182
       3,453       Roche Holding A.G.** ...................           35,494,208
     316,400       Sanofi-Synthelabo S.A.** ...............           13,427,017
     107,805       Sepracor, Inc.* ........................            8,759,156
     843,434       SmithKline Beecham PLC** ...............           10,961,769
     186,210       SmithKline Beecham PLC (ADR)** .........           12,301,498
     949,000       Takeda Chemical Industries** ...........           43,985,946
     368,878       Warner-Lambert Co. .....................           25,590,911

                                                                     239,108,628

Medical Instruments - 0.5%
     244,025       Medtronic, Inc. ........................           19,003,447

Metal Processors and Fabricators - 0.9%
   3,186,856       Assa Abloy A.B. - Class B ..............           34,485,950

See Notes to Schedules of Investments.

                                          Janus Aspen Series / June 30, 1999  17
<PAGE>

Janus | Aspen Worldwide Growth Portfolio

SCHEDULE OF INVESTMENTS (unaudited)

Shares and Principal Amount                                       Market Value
- --------------------------------------------------------------------------------
Money Center Banks - 2.5%
   1,365,868       Banca Commerciale Italiana** ...........     $      9,981,208
   8,776,999       Banca di Roma** ........................           12,663,011
   1,435,375       Banco Bilbao Vizcaya S.A.** ............           20,738,471
   2,386,052       Banco Santander Central Hispano S.A.** .           24,852,753
     281,600       HSBC Holdings PLC*,** ..................           10,271,528
      90,192       ING Groep N.V.** .......................            4,883,155
     774,046       Lloyds TSB Group PLC** .................           10,493,107

                                                                      93,883,233

Mortgage Banks - 0.5%
     212,930       Deutsche Pfandbriefbank A.G.** .........           19,323,810

Multi-Line Insurance - 2.1%
     316,642       Aegon N.V.** ...........................           22,972,372
     702,028       Assicurazioni Generali** ...............           24,354,748
     145,070       Axa** ..................................           17,698,464
      23,837       Zurich Allied A.G.** ...................           13,769,306

                                                                      78,794,890

Multimedia - 3.0%
      99,908       Shaw Communications, Inc. - Class B** ..            3,935,438
   1,288,170       Time Warner, Inc. ......................           94,680,495
     372,180       Viacom, Inc. - Class B* ................           16,375,920

                                                                     114,991,853

Networking Products - 5.2%
   3,074,790       Cisco Systems, Inc.* ...................          198,323,955

Oil Companies - Integrated - 0.6%
     146,532       Elf Aquitaine S.A.** ...................           21,503,572

Pipelines - 0.4%
     179,960       Enron Corp. ............................           14,711,730

Publishing - Periodicals - 1.5%
   1,400,033       Wolters Kluwer N.V.** ..................           55,731,253

Radio - 0.2%
     136,480       Chancellor Media Corp.* ................            7,523,460

Recycling - 0.2%
     165,718       Tomra Systems A.S.A ....................            6,231,083

Retail - Diversified - 0.5%
     271,000       Ito-Yokado Co., Ltd.** .................           18,135,902

Retail - Internet - 0.7%
     103,900       Amazon.com, Inc.* ......................           13,000,488
      99,020       eBay, Inc.* ............................           14,952,020

                                                                      27,952,508
Retail - Restaurants - 0.3%
   2,223,283       TelePizza S.A.*,** .....................           11,509,904

Security Services - 0.8%
   1,938,540       Securitas A.B. - Class B ...............           28,958,123

Telecommunication Equipment - 5.3%
   1,020,180       Nokia Oyj** ............................     $     89,427,061
     848,550       Nokia Oyj (ADR)** ......................           77,695,359
     597,249       Telefonaktiebolaget L.M. Ericsson - Class B        19,143,170
     440,822       Telefonaktiebolaget L.M. Ericsson - Class B
                     (ADR) ................................           14,519,575

                                                                     200,785,165

Telecommunication Services - 3.5%
   1,127,605       COLT Telecom Group PLC*,** .............           23,648,534
   1,294,866       Energis PLC*,** ........................           30,881,802
      86,155       Global TeleSystems Group, Inc.* ........            6,978,555
     221,505       Korea Telecom Corp. (ADR)* .............            8,860,200
     227,465       Level 3 Communications, Inc.* ..........           13,662,117
     215,645       NTL, Inc.* .............................           18,585,903
       1,625       NTT Data Corp.** .......................           12,915,562
     338,081       United Pan-Europe Communications N.V.*,**          18,339,172

                                                                     133,871,845

Telephone - Integrated - 6.8%
     951,311       AT&T Corp. .............................           53,095,045
   1,498,957       British Telecommunications PLC**,# .....           25,178,060
         389       Nippon Telegraph & Telephone Corp.** ...            4,531,621
      99,388       Swisscom A.G.** ........................           37,400,202
     242,110       Telecom Argentina Stet S.A. (ADR) ......            6,476,443
     319,560       Telefonica de Argentina S.A. (ADR) .....           10,026,195
   1,364,890       Telefonica S.A.*,** ....................           65,747,727
     106,718       Telefonica S.A. (ADR)*,** ..............           15,700,886
     463,280       Telefonos de Mexico S.A. (ADR) .........           37,438,815

                                                                     255,594,994

Telephone - Local - 0.2%
     132,160       U.S. West, Inc. ........................            7,764,400

Telephone - Long Distance - 1.7%
     734,925       MCI WorldCom, Inc.* ....................           63,387,281

Transportation - Air Freight - 0.7%
     483,980       FDX Corp.* .............................           26,255,915

Travel Services - 0.1%
       1,323       Kuoni Reisen A.G.*,** ..................            5,101,914

Water - 1.0%
     554,430       Azurix Corp.* ..........................           11,088,600
     148,001       Suez Lyonnaise des Eaux** ..............           26,694,862

                                                                      37,783,462
- --------------------------------------------------------------------------------
Total Common Stock (cost $2,327,722,576) ..................        3,403,057,953
- --------------------------------------------------------------------------------

See Notes to Schedules of Investments.

18  Janus Aspen Series / June 30, 1999
<PAGE>

Shares or Principal Amount                                        Market Value
- --------------------------------------------------------------------------------
Foreign Bond - 0.3%
EUR
  10,171,750       Tecnost International N.V., 4.487%
                     company guaranteed notes
                     due 6/23/04** (cost $10,482,650) .....     $     10,651,385
- --------------------------------------------------------------------------------
Preferred Stock - 1.6%
Automotive - Cars and Light Trucks - 0.3%
       5,142       Porsche A.G.** .........................           12,090,385

            Telephone - Integrated - 1.3%
     522,350       Telecomunicacoes Brasileiras S.A. (ADR)            47,109,441
- --------------------------------------------------------------------------------
Total Preferred Stock (cost $58,213,423) ..................           59,199,826
- --------------------------------------------------------------------------------
Rights 0%
   3,186,856       Assa Abloy A.B.* (cost $0) .............              674,725
- --------------------------------------------------------------------------------
Repurchase Agreeement - 3.2%
$122,600,000       Morgan Stanley & Co., Inc.
                     5.10%, dated 6/30/99, maturing 7/1/99,
                     to be repurchased at $122,617,368
                     collateralized by $165,221,804 in
                     Fannie Mae, 5.50%-8.50%, 1/1/04-7/1/29
                     with a value of $125,066,171
                     (cost $122,600,000) ..................          122,600,000
- --------------------------------------------------------------------------------
U.S. Government Agencies - 2.6%
                   Fannie Mae:
  50,000,000         4.70%, 8/6/99 ........................           49,765,000
  25,000,000         4.86%, 9/7/99 ........................           24,761,500
                   Freddie Mac
  25,000,000         4.74%, 11/2/99 .......................           24,559,750
- --------------------------------------------------------------------------------
Total U.S. Government Agencies (cost $99,127,333) .........           99,086,250
- --------------------------------------------------------------------------------
U.S. Government Obligations - 1.5%
                   U.S. Treasury Bills:
   8,850,000         4.30%, 7/22/99 .......................            8,827,079
  50,000,000         4.615%, 5/25/00 ......................           47,856,500
- --------------------------------------------------------------------------------
Total U.S. Government Obligations (cost $56,640,600) ......           56,683,579
- --------------------------------------------------------------------------------
Total Investments (total cost $2,674,786,582) - 99.1% .....        3,751,953,718
- --------------------------------------------------------------------------------
Cash, Receivables and Other Assets, net of Liabilities - 0.9%         32,437,081
- --------------------------------------------------------------------------------
Net Assets - 100% .........................................     $  3,784,390,799
- --------------------------------------------------------------------------------

Summary of Investments by Country, June 30, 1999

Country              % of Investment Securities                     Market Value
- --------------------------------------------------------------------------------
Argentina                                  0.4%                 $     16,502,637
Bermuda                                    4.2%                      156,820,725
Brazil                                     1.3%                       47,109,441
Canada                                     1.0%                       36,779,950
Finland                                    4.9%                      185,632,923
France                                     6.5%                      242,189,159
Germany                                    4.6%                      172,491,880
Hong Kong                                  1.4%                       51,068,310
Italy                                      1.8%                       67,287,718
Japan                                      8.0%                      301,178,480
Mexico                                     1.2%                       46,618,656
Netherlands                                7.9%                      298,167,043
Norway                                     0.2%                        6,231,083
South Korea                                0.2%                        8,860,200
Spain                                      4.1%                      152,435,230
Sweden                                     2.7%                      102,900,607
Switzerland                                2.8%                      103,417,751
United Kingdom                             8.9%                      334,188,355
United States++                           37.9%                    1,422,073,570
- --------------------------------------------------------------------------------
Total                                    100.0%                 $  3,751,953,718

++Includes Short-Term Securities (30.5% excluding Short-Term Securities)

Forward Currency Contracts, Open at June 30, 1999

Currency Sold and                  Currency            Currency     Unrealized
Settlement Date                  Units Sold     Value in $ U.S.    Gain/(Loss)
- --------------------------------------------------------------------------------
British Pound 10/8/99            42,700,000         $67,401,950     $1,434,720
British Pound 10/14/99            9,000,000          14,207,400        367,200
British Pound 12/9/99            56,300,000          88,942,740      1,656,360
Canadian Dollar 10/8/99           6,400,000           4,376,368             90
Canadian Dollar 11/18/99          2,300,000           1,573,833          8,576
Euro 7/15/99                     10,000,000          10,330,000      1,381,000
Euro 7/28/99                      7,700,000           7,946,400      1,107,260
Euro 8/12/99                     42,900,000          44,221,320      6,443,580
Euro 8/27/99                     63,900,000          65,791,440      9,118,530
Hong Kong Dollar 5/7/01         329,000,000          41,445,686      (145,889)
Japanese Yen 9/16/99          4,363,000,000          36,062,024      1,647,570
Japanese Yen 10/8/99          4,700,000,000          38,848,754      1,613,179
Japanese Yen 10/14/99         4,600,000,000          38,022,531      1,438,737
Japanese Yen 10/21/99         2,040,000,000          16,862,347        766,066
Japanese Yen 11/18/99         3,150,000,000          26,038,567      1,020,710
Japanese Yen 12/3/99          3,000,000,000          24,799,209        200,791
Swiss Franc 10/8/99              10,300,000           6,737,751        319,460
Swiss Franc 10/21/99              6,000,000           3,930,818        192,894
Swiss Franc 11/18/99                500,000             328,644         20,518
- --------------------------------------------------------------------------------
Total                                              $537,867,782    $28,591,352

See Notes to Schedules of Investments.

                                          Janus Aspen Series / June 30, 1999  19
<PAGE>

Janus | Aspen Balanced Portfolio

[PHOTO]
Blaine Rollins
portfolio manager

For the six months ended June 30, 1999, Janus Aspen Balanced  Portfolio returned
12.06% for its Institutional  Shares and 11.84% for its Retirement Shares. These
gains were well ahead of the Lehman  Brothers  Government/Corporate  Bond Index,
which returned  (2.28%),  but lagged  slightly  behind the Standard & Poor's 500
Index, which appreciated 12.38%.(1)

To sum up the past six months, the first quarter was hot, the second quarter was
not. A brisk  economy  and  continuing  concerns  over the  perceived  excessive
valuations  of many  growth  companies,  as well as fears over  steadily  rising
long-term interest rates, cooled the market off in the spring.  During this dip,
economically sensitive, or cyclical,  stocks enjoyed a temporary bounce. Despite
this volatility, we adhered to our philosophy of owning the best growth-oriented
businesses  we can find,  which  helped  offset  losses in our income  positions
resulting from the increase in rates.  Thanks to the skill of the Janus research
team, we continued to excel at  uncovering  companies  with robust  earnings and
leading market positions, in spite of the short-lived downturn.

One such company is financial  services  innovator  Charles  Schwab,  a standout
performer that added significantly to the Portfolio's returns.  Driving Schwab's
earnings  growth is its online trading  business,  which is attracting  more and
more  "do-it-yourself"   investors  every  day.  This  service  is  particularly
profitable  because it does not  require  employees  to take  calls and  process
orders.  The success of Schwab's  online  trading  business,  combined  with the
organization's  focus on  building  out its Web  offerings,  has given  Schwab a
substantial  advantage over its competitors in an  increasingly  popular service
area.

The cable industry also continues to offer many compelling opportunities.  Among
the  Portfolio's  top cable  holdings  were Time Warner (via Houston  Industries
convertible  preferred  stock) and Comcast,  two  companies  that  substantially
boosted  performance in the period. As they improve their business models,  both
Time Warner and Comcast are  positioned  to benefit from the  increased  revenue
streams created by broadband  technology,  which provides telephony,  high-speed
Internet access and digital cable services over a single platform.

Like Time Warner, Viacom, a company we recently added to the Portfolio, is known
for its arsenal of branded cable content. As the owner of Paramount Studios, not
to mention a number of valuable  cable  businesses,  Viacom's vast media library
gives it  tremendous  growth  potential,  both in the  U.S.  and  abroad,  where
American popular culture has an eager audience, especially among teenagers.

Another  exciting  area we've  invested  early in is the Hispanic  media market.
Hispanic Broadcasting  (formerly Heftel), the largest Hispanic radio corporation
in the country, and Univision, the number one U.S.  Spanish-language  television
network,  were both  winners  for us.  These  two  companies  offer  outstanding
potential,  considering  their  audiences  are growing,  along with  advertising
revenue, at about 20% a year. Moreover,  long-term  demographic trends show that
the buying power of Hispanics is projected to double in the next 10 years.

On the income side, the recent uptick in long-term  interest rates has led us to
focus on securities with intermediate  maturities.  But the recent volatility in
the bond markets has proved advantageous as well, allowing us to add a number of
quality   high-yield   corporate  and  convertible   bonds,   including   Exodus
Communications  and  Liberty  Media,  which  enhanced  our  overall  risk/return
profile.  Once  again,  I  can  thank  the  excellent  research  skills  of  our
fixed-income team for identifying these opportunities.

Overall,  we were  pleased  with the  Portfolio's  performance.  However,  a few
companies  failed to meet our  expectations,  specifically,  our  pharmaceutical
holdings Pfizer and Warner-Lambert.  Both were sold at a profit when their share
prices  reflected  a slowdown in sales of some  recently  introduced  drugs.  In
general,  pharmaceuticals  have suffered  lately from rising  interest rates, as
well  as  concerns  over  a  tightening  regulatory  environment  and  President
Clinton's  recently  announced  Medicare reform  proposals.  On a positive note,
however,  Allergan has been a strong  performer for us,  producing  some popular
consumer niche products that are providing excellent top-line growth.

Going  forward,  we see  the  U.S.  economy  moderating  and  foreign  economies
rebounding. And while consumer spending and employment are currently at all-time
highs, the Federal  Reserve's move in late June increasing  short-term  interest
rates a quarter-point should help keep a lid on inflation.

Thank you for your investment in Janus Aspen Balanced Portfolio.

Portfolio Asset Mix                  June 30, 1999        December 31, 1998
- --------------------------------------------------------------------------------
Equities                                     34.0%                    41.1%
Top 10 Equities/Preferred                    24.6%                    32.1%
Number of Stocks                                49                       52
Fixed-Income Securities                        100                       45
  U.S. Treasury Notes                         6.2%                     6.8%
  Investment-Grade
    Corporate Bonds                          13.6%                     9.5%
  High-Yield Corporate Bonds                 27.4%                    13.6%
  Foreign Corporate Bonds                     1.9%                       --
Preferred Stock                              11.4%                    19.2%
Cash & Cash Equivalents                       5.5%                     9.8%
- --------------------------------------------------------------------------------

(1)  All returns include reinvested dividends.

Past performance does not guarantee future results.

20  Janus Aspen Series / June 30, 1999
<PAGE>

Average Annual Total Return(1)
For the Periods Ended June 30, 1999 (unaudited)
- --------------------------------------------------------------------------------
Institutional Shares (Inception Date 9/13/93)
  1 Year                                                     28.13%
  5 Year                                                     21.58%
  From Inception                                             20.03%
- --------------------------------------------------------------------------------
Lehman Brothers Govt./Corp. Bond Index
  1 Year                                                      2.70%
  5 Year                                                      7.76%
  From Inception Date of Institutional Shares                 5.86%
- --------------------------------------------------------------------------------
S&P 500 Index
  1 Year                                                     22.76%
  5 Year                                                     27.86%
  From Inception Date of Institutional Shares                23.28%
- --------------------------------------------------------------------------------
Retirement Shares (Inception Date 5/1/97)
  1 Year                                                     27.52%
  5 Year                                                     20.97%
  From Portfolio Inception                                   19.22%
- --------------------------------------------------------------------------------
Returns shown for  Retirement  Shares for periods  prior to their  inception are
derived from the historical  performance of  Institutional  Shares,  adjusted to
reflect the higher operating expenses of Retirement Shares.

(1)  All returns reflect reinvested  dividends.  The Portfolio's  securities may
     differ significantly from the securities in the Index. Index returns do not
     include  taxes or  dividends  and interest  payments or operating  expenses
     necessary to maintain a portfolio  consisting of the same  securities  that
     are in the Index.  These returns do not reflect the charges and expenses of
     any particular  insurance product or qualified plan.  Investment return and
     principal value will fluctuate so that shares, when redeemed,  may be worth
     more or less than their  original cost.  The adviser  voluntarily  waives a
     portion of the Portfolio's  expenses.  Without such waiver, the Portfolio's
     total returns for each class would have been lower.  Past  performance does
     not guarantee future results.

SCHEDULE OF INVESTMENTS (unaudited)

Shares or Principal Amount                                        Market Value
- --------------------------------------------------------------------------------
Common Stock - 34.0%
Brewery - 0.8%
      81,900       Anheuser-Busch Companies, Inc. .........     $      5,809,781
     135,415       Heineken N.V ...........................            6,933,607

                                                                      12,743,388

Cable Television - 2.3%
     921,140       Comcast Corp. - Class A ................           35,406,319

Circuits - 2.2%
     271,960       Linear Technology Corp. ................           18,289,310
     249,740       Maxim Integrated Products, Inc.* .......           16,607,710

                                                                      34,897,020

Commercial Banks - 0.9%
     239,340       Carolina First Corp. ...................            5,833,912
     131,175       Firstar Corp. ..........................            3,672,900
       8,625       M&T Bank Corp. .........................            4,743,750

                                                                      14,250,562

Commercial Services - 0.5%
     244,297       Paychex, Inc. ..........................            7,786,967

Computer Software - 0.1%
      88,313       Wind River Systems, Inc.* ..............            1,418,528

Cruise Lines - 1.6%
     249,165       Carnival Corp. .........................           12,084,503
     282,515       Royal Caribbean Cruises, Ltd. ..........           12,360,031

                                                                      24,444,534

Electronic Components - Semiconductors - 0.6%
      64,515       Texas Instruments, Inc. ................            9,354,675

Finance - Credit Card - 1.0%
     119,585       American Express Co. ...................     $     15,560,998

Finance - Investment Bankers/Brokers - 3.0%
     431,620       Charles Schwab Corp. ...................           47,424,247

Instruments - Scientific - 0.8%
     329,850       Dionex Corp.* ..........................           13,358,925

Internet Software - 0.2%
      32,800       America Online, Inc.* ..................            3,624,400

Investment Management and Advisory Services - 0.4%
     192,265       Affiliated Managers Group, Inc.* .......            5,804,000

Life and Health Insurance - 1.8%
     321,891       Prudential Corp. PLC** .................            4,759,382
     393,805       Reinsurance Group of America, Inc. .....           13,881,626
      61,900       Reinsurance Group of America, Inc. - Class A        2,073,650
     273,565       StanCorp Financial Group, Inc.* ........            8,206,950

                                                                      28,921,608

Medical - Drugs - 0.7%
     127,620       Pharmacia & Upjohn, Inc. ...............            7,250,411
      66,740       Schering-Plough Corp. ..................            3,537,220

                                                                      10,787,631

Money Center Banks - 2.0%
     837,275       Bank of New York Co., Inc. .............           30,717,526

Multimedia - 2.5%
     886,460       Viacom, Inc. - Class B* ................           39,004,240

Networking Products - 1.8%
     447,226       Cisco Systems, Inc.* ...................           28,846,077

See Notes to Schedules of Investments.

                                          Janus Aspen Series / June 30, 1999  21
<PAGE>

Janus | Aspen Balanced Portfolio

SCHEDULE OF INVESTMENTS (unaudited)

Shares or Principal Amount                                        Market Value
- --------------------------------------------------------------------------------
Optical Supplies - 0.5%
      72,000       Allergan, Inc. .........................     $      7,992,000

Pipelines - 1.1%
     213,215       Enron Corp. ............................           17,430,326

Property and Casualty Insurance - 1.2%
     212,155       Mutual Risk Management, Ltd. ...........            7,080,673
      79,710       Progressive Corp. ......................           11,557,950

                                                                      18,638,623

Publishing - Periodicals - 0.3%
     114,754       Wolters Kluwer N.V .....................            4,568,024

Radio - 1.8%
     161,180       Hispanic Broadcasting Corp.* ...........           12,229,532
     516,410       Infinity Broadcasting Corp. - Class A* .           15,363,198

                                                                      27,592,730

Retail -  Computer Equipment - 0%
      16,675       Insight Enterprises, Inc.* .............              412,706

Retail - Discount - 1.0%
     200,345       Costco Companies, Inc.* ................           16,040,122

Retail - Internet - 0.8%
       7,590       Amazon.com, Inc.* ......................              949,699
      78,090       eBay, Inc.* ............................           11,791,590

                                                                      12,741,289

Retail - Office Supplies - 0.8%
     398,015       Staples, Inc.* .........................           12,313,589

Retail - Restaurants - 0.3%
     131,445       McDonald's Corp. .......................            5,430,322

Super-Regional Banks - 0.6%
      91,145       Northern Trust Corp. ...................            8,841,065

Telecommunication Equipment - 1.0%
     166,075       Nokia Oyj (ADR) ........................           15,206,242

Television - 1.4%
     343,638       Univison Communications, Inc. - Class A*           22,680,108
- --------------------------------------------------------------------------------
Total Common Stock (cost $362,118,282) ....................          534,238,791
- --------------------------------------------------------------------------------
Corporate Bonds - 41.0%
Automotive - Truck Parts and Equipment - 0.9%
                   Federal-Mogul Corp.:
$  7,500,000         7.375%, notes, due 1/15/06+ ..........            7,050,000
   8,065,000         7.50%, notes, due 1/15/09+ ...........            7,450,044

                                                                      14,500,044

Brewery - 1.1%
                   Anheuser-Busch Companies, Inc.:
   5,350,000         5.65%, notes, due 9/15/08 ............            4,995,563
  14,100,000         5.75%, notes, due 4/1/10 .............           13,042,500

                                                                      18,038,063

Broadcast Services and Programming - 0.9%
  14,500,000       AT&T Corp./Liberty Media Group, 7.875%
                     bonds, due 7/15/09+                              14,413,580

Cable Television - 9.0%
                   Adelphia Communications Corp.:
$ 10,145,000         9.25%, senior notes, due 10/1/02 .....     $     10,271,813
   7,055,000         10.50%, senior notes, due 7/15/04 ....            7,548,850
  12,230,000         8.375%, senior notes, due 2/1/08 .....           12,107,700
   2,000,000         7.75%, senior notes, due 1/15/09 .....            1,870,000
  30,000,000         7.875%, senior notes, due 5/1/09 .....           27,825,000
   1,500,000       Century Communications Corp., 8.875%
                     senior notes, due 1/15/07 ............            1,500,000
  33,800,000       Charter Communications Holdings L.L.C.
                     8.625%, senior notes, due 4/1/09+ ....           32,448,000
   5,140,000       Classic Cable, Inc., 9.875%
                     senior subordinated notes, due 8/1/08             5,358,450
  10,000,000       Falcon Holding Group L.P., 8.375%
                     debentures, due 4/15/10 ..............            9,875,000
   6,000,000       FrontierVision Holdings L.P., 11.00%
                     senior subordinated notes, due 10/15/06           6,600,000
  11,205,000       Jones Intercable, Inc., 7.625%
                     senior notes, due 4/15/08 ............           11,625,188
   3,000,000       Lenfest Communications, Inc., 7.625%
                     senior notes, due 2/15/08 ............            3,097,500
                   Mediacom L.L.C.:
   6,000,000         8.50%, senior notes, due 4/15/08 .....            5,925,000
   3,750,000         7.875%, senior notes, due 2/15/11+ ...            3,506,250
   2,505,000       Rifkin Acquisition Partners L.P., 11.125%
                     senior subordinated notes, due 1/15/06            2,821,256

                                                                     142,380,007

Casino Hotels - 0.1%
   1,222,000       Station Casinos, Inc., 10.125%
                     senior subordinated notes, due 3/15/06            1,264,770

Cellular Telecommunications - 0.7%
  10,318,000       Orange PLC, 8.00%
                     senior notes, due 8/1/08 .............            9,853,690
   1,375,000       Vodafone AirTouch PLC, 6.65%
                     notes, due 5/1/08 ....................            1,342,344

                                                                      11,196,034

Commercial Banks- 0.3%
   5,500,000       First Union National Bank, 5.80%
                     subordinated  notes, due 12/1/08 .....            5,053,125

Computer Services - 0.1%
   1,135,000       Globix Corp., 13.00%
                     senior notes, due 5/1/05 .............            1,078,250

Computer Software - 0.5%
   4,353,000       Aspen Technology, Inc., 5.25%
                     convertible subordinated debentures
                     due 6/15/05 ..........................            2,622,683
   6,691,000       Wind River Systems, Inc., 5.00%
                     convertible subordinated notes
                     due 8/1/02 ...........................            5,804,443

                                                                       8,427,126

See Notes to Schedules of Investments.

22  Janus Aspen Series / June 30, 1999
<PAGE>

Shares or Principal Amount                                        Market Value
- --------------------------------------------------------------------------------
Computers - Micro - 1.0%
$  7,900,000       Dell Computer Corp., 6.55%
                     senior notes, due 4/15/08 ............     $      7,663,000
                   IBM Corp.:
   2,000,000         6.375%, notes, due 6/15/00 ...........            2,012,500
   7,500,000         5.375%, notes, due 2/1/09 ............            6,834,375

                                                                      16,509,875

Cosmetics and Toiletries - 0.7 %
   2,950,000       AKI, Inc., 10.50%
                     senior notes, due 7/1/08 .............            2,865,187
   8,000,000       Procter and Gamble Co., 5.25%
                     notes, due 9/15/03 ...................            7,680,000

                                                                      10,545,187

Cruise Lines - 0.3%
                   Royal Caribbean Cruises, Ltd.:
   3,350,000         7.00%, senior notes, due 10/15/07 ....            3,257,875
     739,000         6.75%, senior notes, due 3/15/08 .....              705,745

                                                                       3,963,620

Distribution and Wholesale - 0.2%
   3,000,000       Aviation Sales Co., 8.125%
                     company guaranteed notes, due 2/15/08             2,850,000

Diversified Financial Services - 0.1%
   2,000,000       Associates Corp. N.A., 6.75%
                     senior notes, due 7/15/01 ............            2,020,000

Diversified Operations - 1.3%
                   Tyco International Group S.A.:
   5,714,000         6.125%, company guaranteed notes,
                     due 11/1/08 ..........................            5,299,735
  15,642,000         6.125%, notes, due 1/15/09 ...........           14,488,403

                                                                      19,788,138

Fiber Optics - 0.2%
   2,395,000       Metromedia Fiber Network, Inc., 10.00%
                     senior notes, due 11/15/08 ...........            2,460,863

Finance - Auto Loans - 1.8%
  19,327,000       Ford Motor Credit Corp., 5.80%
                     senior notes, due 1/12/09 ............           17,660,046
  12,327,000       General Motors Acceptance Corp., 5.85%
                     senior unsubordinated notes, due 1/14/09         11,263,796

                                                                      28,923,842

Food - Canned - 0.3%
   4,500,000       Campbell Soup Co., 4.75%
                     notes, due 10/1/03 ...................            4,235,625

Food - Retail - 0.6%
   8,000,000       Fred Meyer, Inc., 7.45%
                     company guaranteed notes, due 3/1/08 .            8,120,000
     631,000       Marsh Supermarkets, Inc., 8.875%
                     company guaranteed notes, due 8/1/07 .              642,042

                                                                       8,762,042

Hotels and Motels - 0.1%
   1,884,000       HMH Properties, Inc., 7.875%
                     company guaranteed notes, due 8/1/08 .            1,728,570

Internet Software - 3.9%
$  2,708,000       America Online, Inc., 4.00%
                     convertible subordinated notes
                     due 11/15/02 .........................     $     23,085,700
                   Exodus Communications, Inc.:
   9,815,000         5.00%, convertible subordinated notes,
                     due 3/15/06+ .........................           26,549,575
   2,631,000         11.25%, senior notes, due 7/1/08 .....            2,736,240
  10,390,000       MindSpring Enterprises, Inc., 5.00%
                     convertible subordinated notes
                     due 4/15/06 ..........................            9,753,613

                                                                      62,125,128

Leisure, Recreation and Gaming - 0.2%
   3,182,000       Hard Rock Hotel, Inc., 9.25%
                     senior subordinated notes, due 4/1/05             3,014,945

Life and Health Insurance - 0.5%
   7,000,000       AFLAC, Inc., 6.50%
                     senior notes, due 4/15/09+ ...........            6,641,250
   1,000,000       SunAmerica, Inc., 6.75%
                     notes, due 10/1/07 ...................              997,500

                                                                       7,638,750

Medical - Drugs - 0.2%
   3,000,000       Warner-Lambert Co., 6.00%
                     notes, due 1/15/08 ...................            2,880,000

Multimedia - 3.8%
   4,500,000       News America, Inc., 6.625%
                     senior notes, due 1/9/08 .............            4,280,625
                   Paramount Communications, Inc.:
   4,939,000         8.25%, debentures, due 8/1/22 ........            4,982,216
  11,616,000         7.50%, debentures, due 7/15/23 .......           10,860,960
  10,300,000       Time Warner, Inc., 8.11%
                     notes, due 8/15/06 ...................           10,815,000
                   Viacom, Inc.:
  19,371,000         7.75%, senior notes, due 6/1/05 ......           19,855,275
     641,000         7.625%, company guaranteed notes
                       due 1/15/16 ........................              646,609
                   Walt Disney Co. (The):
   2,000,000         6.375%, senior notes, due 3/30/01 ....            2,012,500
   6,500,000         6.75%, senior notes, due 3/30/06 .....            6,524,375

                                                                      59,977,560

Pipelines - 0.1%
                   Enron Corp.:
   1,000,000         6.75%, senior subordinated debentures
                       due 7/1/05 .........................              978,750
     700,000         6.75%, notes, due 8/1/09 .............              678,125

                                                                       1,656,875

Property and Casualty Insurance - 0.6%
  11,050,000       Progressive Corp., 6.625%
                     senior notes, due 3/1/29 .............           10,014,063

Radio - 0.9%
  10,048,000       Clear Channel Communications, Inc., 2.625%
                     convertible senior notes, due 4/1/03 .           12,685,600
   2,000,000       Susquehanna Media Co., 8.50%
                     senior subordinated notes, due 5/15/09+           1,965,000

                                                                      14,650,600

See Notes to Schedules of Investments.

                                          Janus Aspen Series / June 30, 1999  23
<PAGE>

Janus | Aspen Balanced Portfolio

SCHEDULE OF INVESTMENTS (unaudited)

Shares or Principal Amount                                        Market Value
- --------------------------------------------------------------------------------
Retail - Building Products -1.3%
$  7,375,000       Home Depot, Inc., 3.25%
                     convertible subordinated notes
                     due 10/1/01 ..........................     $     20,502,500

Retail - Catalog Shopping - 0%
     377,000       R.H. Donnelly, Inc., 9.125%
                     senior subordinated notes, due 6/1/08               384,540

Retail - Internet - 2.1%
  34,108,000       Amazon.com, Inc., 4.75%
                     convertible subordinated debentures
                     due 2/1/09+ ..........................           33,255,300

Retail - Music Store - 0.4%
   6,220,000       MTS, Inc., 9.375%
                     senior subordinated notes, due 5/1/05             5,574,675

Retail - Restaurants - 0.4%
   3,000,000       McDonald's Corp., 6.50%
                     notes, due 8/1/07 ....................            2,992,500
                   Tricon Global Restaurants, Inc.:
     459,000         7.45%, senior notes, due 5/15/05 .....              455,558
   2,184,000         7.65%, senior notes, due 5/15/08 .....            2,181,270

                                                                       5,629,328

Super-Regional Banks - 0.3%
   4,500,000       Wachovia Corp., 5.625%
                     subordinated notes, due 12/15/08 .....            4,106,250

Telecommunication Equipment - 0.4%
   6,500,000       Lucent Technologies, Inc., 5.50%
                     notes, due 11/15/08 ..................            5,980,000

Telecommunication Services - 4.6%
   5,158,000       Bresnan Communications Holding Co., 8.00%
                     senior notes, due 2/1/09+ ............            5,093,525
   2,715,000       Energis PLC, 9.75%
                     senior unsubordinated notes
                     due 6/15/09+ .........................            2,735,362
   6,845,000       Galaxy Telecom L.P., 12.375%
                     senior subordinated notes, due 10/1/05            7,572,281
   2,500,000       Global Crossing Holding, Ltd., 9.625%
                     company guaranteed notes, due 5/15/08             2,656,250
   7,047,000       Hyperion Telecommunications, Inc., 12.00%
                     senior subordinated notes, due 11/1/07+           7,135,087
  21,501,000       Level 3 Communications, Inc., 9.125%
                     senior notes, due 5/1/08 .............           21,178,485
                   McLeodUSA, Inc.:
   1,170,000         9.25%, senior notes, due 7/15/07 .....            1,172,925
   2,320,000         8.125%, senior notes, due 2/15/09+ ...            2,175,000
  14,001,000       NTL, Inc., 7.00%
                     convertible subordinated notes
                     due 12/15/08+ ........................           22,839,131

                                                                      72,558,046

Telephone - Integrated - 0.9%
                   Intermedia Communications, Inc.:
   2,237,000         8.50%, senior notes, due 1/15/08 .....            2,046,855
     826,000         8.60%, senior notes, due 6/1/08 ......              766,115
  10,925,000       NEXTLINK Communications, Inc., 10.75%
                     senior notes, due 6/1/09 .............           11,198,125

                                                                      14,011,095

Telephone - Long Distance - 0.2%
$  1,900,000       MCI Communications Corp., 6.50%
                     senior notes, due 4/15/10 ............     $      1,819,250
   1,570,000       Qwest Communications International, Inc.
                     10.875%, senior notes, due 4/1/07 ....            1,789,800

                                                                       3,609,050
- --------------------------------------------------------------------------------
Total Corporate Bonds  (cost $634,668,292) ................          645,707,466
- --------------------------------------------------------------------------------
Foreign Bonds - 1.9%
Finance - Other Services - 0.3%
EUR    4,400       Ono Finance PLC, 13.00%
                     units, due 5/1/09**,+ ................            4,673,725

Telecommunication Services - 1.6%
GBP
   4,563,000       COLT Telecom Group PLC, 2.00%
                     convertible bonds, due 3/29/06+ ......            5,035,093
EUR
   7,185,000       KPNQwest B.V., 7.125%
                     senior unsubordinated notes,
                     due 6/1/09+ ..........................            7,400,427
GBP
  13,950,000       NTL, Inc., zero coupon
                     senior notes, due 4/15/09** ..........           13,056,197
                                                                      25,491,717
- --------------------------------------------------------------------------------
Total Foreign Bonds (cost $31,289,404) ....................           30,165,442
- --------------------------------------------------------------------------------
Preferred Stock - 11.4%
Automotive - Truck Parts and Equipment - 0.8%
     209,528       Federal-Mogul Financing Trust Corp.
                     convertible, 7.00% ...................           12,414,534

Cable Television - 0.5%
      88,300       MediaOne Group, Inc., convertible, 6.25%            7,991,150

Cruise Lines - 2.5%
     282,652       Royal Caribbean Cruises, Ltd.
                     convertible, 7.25% ...................           38,935,313

Electric - Integrated - 6.9%
     903,525       Houston Industries, Inc., convertible, 7.00%      107,745,356

Internet Software - 0.3%
     104,005       PSINet, Inc. - Series C, convertible, 6 75%         5,018,241

Telephone - Integrated - 0.4%
      76,062       Nextlink Communications, Inc.
                     convertible, 6.50% ...................            6,636,409
- --------------------------------------------------------------------------------
Total Preferred Stock (cost $137,293,660) .................          178,741,003
- --------------------------------------------------------------------------------
Warrants - 0%
       1,135       Bell Technology Group, Ltd.
                     - expires 5/1/05* (cost $0) ..........              178,762
- --------------------------------------------------------------------------------
U.S. Government Obligations - 6.2%
                   U.S. Treasury Notes:
$ 12,300,000         6.50%, due 5/15/05 ...................           12,646,737
  10,000,000         5.625%, due 2/15/06 ..................            9,822,400
     525,000         7.00%, due 7/15/06 ...................              555,975
  26,000,000         6.125%, due 8/15/07 ..................           26,271,180
  23,500,000         5.625%, due 5/15/08 ..................           23,010,025
  26,000,000         5.50%, due 5/15/09 ...................           25,439,700
- --------------------------------------------------------------------------------
Total U.S. Government Obligations (cost $99,411,917) ......           97,746,017
- --------------------------------------------------------------------------------

See Notes to Schedules of Investments.

24  Janus Aspen Series / June 30, 1999
<PAGE>

Shares or Principal Amount                                        Market Value
- --------------------------------------------------------------------------------
Repurchase Agreement - 5.7%
$ 89,900,000       Morgan Stanley & Co., Inc.
                     5.10%, dated 6/30/99, maturing 7/1/99,
                     to be repurchased at $89,912,736
                     collateralized by $121,153,672 in
                     Fannie Mae, 5.50%-8.50%,
                     1/1/04-7/1/29 with a value of
                     $91,708,391 (cost $89,900,000) .......     $     89,900,000
- --------------------------------------------------------------------------------
U.S. Government Agency - 3.1%
                   Fannie Mae
  50,000,000         4.96%, 11/15/99 (cost $49,048,611) ...           49,029,500
- --------------------------------------------------------------------------------
Total Investments (total cost $1,403,730,166) - 103.3% ....        1,625,706,981
- --------------------------------------------------------------------------------
Liabilities, net of Cash, Receivables and Other Assets - (3.3%)     (52,523,269)
- --------------------------------------------------------------------------------
Net Assets - 100% .........................................     $  1,573,183,712
- --------------------------------------------------------------------------------

Summary of Investments by Country, June 30, 1999

Country              % of Investment Securities                     Market Value
- --------------------------------------------------------------------------------
Bermuda                                    1.6%                 $     26,868,811
Canada                                     1.4%                       22,839,131
Finland                                    0.9%                       15,206,242
Netherlands                                1.2%                       18,902,058
United Kingdom                             2.5%                       40,113,449
United States++                           92.4%                    1,501,777,290
- --------------------------------------------------------------------------------
Total                                    100.0%                 $  1,625,706,981

++Includes Short-Term Securities (83.8% excluding Short-Term Securities)

Forward Currency Contracts, Open at June 30, 1999

Currency Sold and                  Currency            Currency     Unrealized
Settlement Date                  Units Sold     Value in $ U.S.    Gain/(Loss)
- --------------------------------------------------------------------------------
British Pound 10/21/99            3,700,000         $ 5,841,560       $136,232
- --------------------------------------------------------------------------------
Total                                               $ 5,841,560       $136,232

See Notes to Schedules of Investments.

                                          Janus Aspen Series / June 30, 1999  25
<PAGE>

Janus | Aspen Equity Income Portfolio

[PHOTO]
Blaine Rollins
portfolio manager

I'm pleased to report that for the six months ended June 30,  1999,  Janus Aspen
Equity Income  Portfolio gained 20.21% for its  Institutional  Shares and 19.90%
for  its  Retirement  Shares,  outpacing  the  S&P  500  Index,  which  returned
12.38%.(1)

During the period, early gains by growth stocks retreated somewhat in the spring
as steadily rising  long-term  interest rates and the fear of higher  short-term
rates took their toll.  This,  combined with the realization that Asia's economy
had finally bottomed,  caused the market to briefly favor cyclical stocks, which
typically  perform  well during an economic  recovery.  But this  movement  into
cyclicals was short-lived, and growth stocks quickly rebounded.

In this volatile  environment,  we were guided by our philosophy of pursuing the
highest returns possible for our investors while minimizing risk,  regardless of
what the market favored. As always, our focus is on investing in a mix of equity
and  income-producing  securities  of  businesses  with sound  fundamentals  and
sustainable  growth.  More and more, the companies we're looking for are able to
capitalize  on  powerful  forces  in  the  economy,  including  robust  consumer
spending,  the increasing popularity of the Internet,  and innovative changes in
the global telecommunications industry.

With  statistics  showing  that people are spending  more than they're  earning,
discount  warehouse  Costco,  one of our  plays  in the  retailing  sector,  was
positioned to benefit. The company's strength lies in its volume pricing,  which
allows Costco to pass along  substantial  savings to its customers - and to keep
membership  numbers  and fees  growing at a rapid  pace.  As it  proceeds to add
stores outside the U.S., we see Costco continuing to turn in solid performance.

Also significantly  enhancing returns was Cisco Systems, the leading supplier of
networking equipment and architecture. Driving Cisco's growth is its foothold in
both  the   expansion  of  the   Internet   and  the  buildout  of   fiber-optic
telecommunications  networks - two exciting  developments  currently  helping to
power the economy.  Cisco's  innovation  and  creativity are matched only by its
outstanding management team, which gives us confidence we will be sharing in the
company's ongoing success.

The  revitalization  of cable is another exciting trend we see continuing in the
future,  with  networking  and  broadband  telecommunications  leading  the way.
Capitalizing  on these  technological  advancements,  long-time  holding Comcast
rewarded us with strong performance by offering new value-added services such as
digital  cable,  telephony,  video on demand  and  high-speed  Internet  access.
Additionally,  our  position  in media  conglomerate  Time  Warner,  via Houston
Industries  convertible bonds,  allowed us to participate in the upside movement
of Time Warner's stock and achieve an attractive yield as well.

Continuing on the  fixed-income  side,  we've chosen to focus on securities with
intermediate  maturities  because debt instruments have been especially hard hit
by recent market  volatility.  The upside of this environment is that it allowed
us to enhance the overall risk/return profile of the Portfolio by leveraging the
outstanding research skills of our fixed-income team. As a result, we added some
quality   high-yield   corporate   and   convertible   names,   such  as  Exodus
Communications,  a company that provides secure storage facilities for corporate
networking   platforms.   Exodus  has   proved  to  be  a  standout   performer,
significantly boosting the Portfolio's returns.

While we were pleased with the performance of our winners, there were also a few
disappointments.  Personnel  agency Robert Half  International  fell on concerns
that fewer  temporary  employees will be needed if the U.S.  economy slows later
this year,  and we sold our  position  at a loss.  We also  liquidated  our more
expensive  pharmaceutical holdings Pfizer and Warner-Lambert,  which fell victim
to  rising  interest  rates  and  the  possibility  of  increased   governmental
regulation.  However,  we elected to add to our  position in Pharmacia & Upjohn,
which, while also suffering a setback, has several promising new products in its
pipeline.

Looking ahead,  all signs point to an economy that,  while still strong,  may be
moderating somewhat. But regardless of the backdrop, we'll continue to adhere to
our  in-depth,  hands-on  approach to  investing  that has produced the superior
results our shareholders expect.

As always, we appreciate your investment in Janus Aspen Equity Income Portfolio.

Portfolio Asset Mix                  June 30, 1999        December 31, 1998
- --------------------------------------------------------------------------------
Equities                                     50.5%                    61.9%
Top 10 Equities/Preferred                    32.2%                    39.2%
Number of Stocks                                52                       47
Fixed-Income Securities
  Investment-Grade
    Corporate Bonds                           4.5%                       --
  High-Yield Corporate Bonds                 19.9%                    12.7%
Preferred Stock                              19.3%                    21.2%
Cash & Cash Equivalents                       5.8%                     4.2%
- --------------------------------------------------------------------------------

(1)  All returns include reinvested dividends.

Past performance does not guarantee future results.

26  Janus Aspen Series / June 30, 1999
<PAGE>

Average Annual Total Return(1)
For the Periods Ended June 30, 1999 (unaudited)
- --------------------------------------------------------------------------------
Institutional Shares (Inception Date 5/1/97)
  1 Year                                                     43.38%
  From Inception                                             48.93%
- --------------------------------------------------------------------------------
S&P 500 Index
  1 Year                                                     22.76%
  From Portfolio Inception                                   30.19%
- --------------------------------------------------------------------------------
Retirement Shares (Inception Date 5/1/97)
  1 Year                                                     42.61%
  From Inception                                             48.10%
- --------------------------------------------------------------------------------

(1)  All returns reflect reinvested  dividends.  The Portfolio's  securities may
     differ significantly from the securities in the Index. Index returns do not
     include  taxes or  dividends  and interest  payments or operating  expenses
     necessary to maintain a portfolio  consisting of the same  securities  that
     are in the Index.  These returns do not reflect the charges and expenses of
     any particular  insurance product or qualified plan.  Investment return and
     principal value will fluctuate so that shares, when redeemed,  may be worth
     more or less than their  original cost.  The adviser  voluntarily  waives a
     portion of the Portfolio's  expenses.  Without such waiver, the Portfolio's
     total returns for each class would have been lower.  Past  performance does
     not guarantee future results.

SCHEDULE OF INVESTMENTS (unaudited)

Shares or Principal Amount                                        Market Value
- --------------------------------------------------------------------------------
Common Stock - 49.8%
Brewery - 1.6%
       1,645       Anheuser-Busch Companies, Inc. .........     $        116,692
       2,893       Heineken N.V ...........................              148,129

                                                                         264,821

Broadcast Services and Programming - 1.0%
       4,630       AT&T Corp./Liberty Media Group -
                     Class A* .............................              170,152

Cable Television - 3.8%
       1,035       Adelphia Communications Corp. - Class A*               65,852
      12,474       Comcast Corp. - Class A ................              479,469
       1,195       TCA Cable TV, Inc. .....................               66,322

                                                                         611,643

Circuits - 3.8%
       4,730       Linear Technology Corp. ................              318,093
       4,435       Maxim Integrated Products, Inc.* .......              294,928

                                                                         613,021

Commercial Banks - 1.3%
       4,145       Carolina First Corp. ...................              101,034
       1,725       Firstar Corp. ..........................               48,300
         115       M&T Bank Corp. .........................               63,250

                                                                         212,584

Commercial Services - 0.6%
       3,277       Paychex, Inc. ..........................              104,454

Computer Software - 0.1%
       1,297       Wind River Systems, Inc.* ..............     $         20,833

Cruise Lines - 1.8%
       4,190       Carnival Corp. .........................              203,215
       2,168       Royal Caribbean Cruises, Ltd. ..........               94,850

                                                                         298,065

Data Processing and Management - 0.3%
       1,305       Fiserv, Inc.* ..........................               40,863

Diversified Operations - 0.8%
       1,300       Tyco International, Ltd. ...............              123,175

Electronic Components - Semiconductors - 0.9%
         985       Texas Instruments, Inc. ................              142,825

Finance - Credit Card - 1.5%
       1,820       American Express Co. ...................              236,828

Finance - Investment Bankers/Brokers - 3.4%
       4,942       Charles Schwab Corp. ...................              543,002

Instruments - Scientific - 1.3%
       5,230       Dionex Corp.* ..........................              211,815

Investment Management and Advisory Services - 0.3%
       1,850       Affiliated Managers Group, Inc.* .......               55,847

Life and Health Insurance - 2.7%
       3,291       Prudential Corp. PLC ...................               48,659
       5,547       Reinsurance Group of America, Inc. .....              195,532
         625       Reinsurance Group of America, Inc. - Class A           20,938
       5,580       StanCorp Financial Group, Inc.* ........              167,400

                                                                         432,529

See Notes to Schedules of Investments.

                                          Janus Aspen Series / June 30, 1999  27
<PAGE>

Janus | Aspen Equity Income Portfolio

SCHEDULE OF INVESTMENTS (unaudited)

Shares or Principal Amount                                        Market Value
- --------------------------------------------------------------------------------
Medical - Drugs - 1.5%
       2,220       Pharmacia & Upjohn, Inc. ...............     $        126,124
       2,170       Schering-Plough Corp. ..................              115,010

                                                                         241,134

Money Center Banks - 3.4%
      14,925       Bank of New York Co., Inc. .............              547,561

Multimedia - 1.9%
       7,020       Viacom, Inc. - Class B* ................              308,880

Networking Products - 2.9%
       7,210       Cisco Systems, Inc.* ...................              465,045

Optical Supplies - 1.0%
       1,440       Allergan, Inc. .........................              159,840

Pipelines - 1.6%
       3,205       Enron Corp. ............................              262,009

Property and Casualty Insurance - 2.2%
       4,270       Mutual Risk Management, Ltd. ...........              142,511
       1,470       Progressive Corp. ......................              213,150

                                                                         355,661

Radio - 3.1%
       3,335       Hispanic Broadcasting Corp.* ...........              253,043
       8,385       Infinity Broadcasting Corp. - Class A* .              249,454

                                                                         502,497

Retail - Discount - 1.4%
       2,815       Costco Companies, Inc.* ................              225,376

Retail - Internet - 1.5%
         545       Amazon.com, Inc.* ......................               68,193
       1,125       eBay, Inc.* ............................              169,875

                                                                         238,068

Retail - Restaurants - 0.3%
       1,335       McDonald's Corp. .......................               55,152

Super-Regional Banks - 0.3%
         575       Northern Trust Corp. ...................               55,775

Telecommunication Equipment - 1.6%
         132       Nokia Oyj ..............................               11,571
       2,650       Nokia Oyj (ADR) ........................              242,641

                                                                         254,212

Television - 1.9%
       4,697       Univision Communications, Inc. - Class A*             310,002
- --------------------------------------------------------------------------------
Total Common Stock (cost $5,504,139) ......................            8,063,669
- --------------------------------------------------------------------------------
Corporate Bonds -  24.4%
Advertising Agencies - 0.1%
$      6,000       Omnicom Group, 4.25%
                     convertible subordinated debentures
                     due 1/3/07 ...........................               14,790

Automotive - Truck Parts and Equipment - 0.6%
     100,000       Federal-Mogul Corp., 7.50%
                     notes, due 1/15/09+ ..................               92,375

Cable Television - 3.8%
                   Adelphia Communications Corp.:
$    100,000         7.75%, senior notes, due 1/15/09 .....     $         93,500
     200,000         7.875%, senior notes, due 5/1/09 .....              185,500
     300,000       Charter Communications Holdings L.L.C.
                     8.625%, senior notes, due 4/1/09+ ....              288,000
      46,000       Classic Cable, Inc., 9.875%
                     senior subordinated notes, due 8/1/08                47,955

                                                                         614,955

Cellular Telecommunications - 0.1%
      20,000       Orange PLC, 9.00%
                     bonds, due 6/1/09+ ...................               20,000

Computer Services - 0.1%
      13,000       Globix Corp., 13.00%
                     senior notes, due 5/1/05 .............               12,350

Computer Software - 1.5%
     193,000       Aspen Technology, Inc., 5.25%
                     convertible subordinated debentures
                     due 6/15/05 ..........................              116,283
     146,000       Wind River Systems, Inc., 5.00%
                     convertible subordinated notes
                     due 8/1/02 ...........................              126,655

                                                                         242,938

Diversified Operations - 1.1%
                   Tyco International Group S.A.:
      51,000         6.125%, company guaranteed notes
                     due 11/1/08 ..........................               47,303
     147,000         6.125%, company guaranteed notes
                     due 1/15/09 ..........................              136,159

                                                                         183,462

Fiber Optics - 0%
       7,000       Metromedia Fiber Network, Inc., 10.00%
                     senior notes, due 11/15/08 ...........                7,193

Internet Content - 0.8%
     100,000       DoubleClick, Inc., 4.75%
                     convertible subordinated notes
                     due 3/15/06+ .........................              123,750

Internet Software - 7.9%
      43,000       America Online, Inc., 4.00%
                     convertible subordinated notes
                     due 11/15/02 .........................              366,575
                   Exodus Communications, Inc.:
     250,000         5.00%, convertible subordinated notes
                     due 3/15/06+ .........................              676,250
      29,000         11.25%, senior notes, due 7/1/08 .....               30,160
     215,000       MindSpring Enterprises, Inc., 5.00%
                     notes, due 4/15/06 ...................              201,831

                                                                       1,274,816

Radio - 1.6%
     206,000       Clear Channel Communications, Inc.,
                     2.625%, convertible senior notes
                     due 4/1/03 ...........................              260,075

See Notes to Schedules of Investments.

28  Janus Aspen Series / June 30, 1999
<PAGE>

Shares or Principal Amount                                        Market Value
- --------------------------------------------------------------------------------
Retail - Building Products - 1.6%
      95,000       Home Depot, Inc., 3.25%
                     convertible subordinated notes
                     due 10/1/01 ..........................     $        264,100

Retail - Internet - 2.3%
     257,000       Amazon.com, Inc., 4.75%
                     convertible subordinated debentures
                     due 2/1/09+ ..........................              250,575
      75,000       Beyond.com Corp., 7.25%
                     convertible subordinated notes
                     due 12/1/03+ .........................              125,625

                                                                         376,200

Satellite Telecommunications - 0.6%
     120,000       Innova S. de R.L., 12.875%
                     senior notes, due 4/1/07 .............               96,300

Savings/Loan/Thrifts - 0.3%
      33,000       Net.B@nk, Inc., 4.75%
                     convertible subordinated notes
                     due 6/1/04 ...........................               40,755

Telecommunication Services - 0.6%
      47,000       Bresnan Communications Holding Co., 8.00%
                     senior notes, due 2/1/09+ ............               46,412
      50,000       Galaxy Telecom L.P., 12.375%
                     senior subordinated notes, due 10/1/05               55,312

                                                                         101,724

Telephone - Integrated - 1.4%
     140,000       NTL, Inc., 7.00%
                     convertible subordinated notes,
                     due 12/15/08+ ........................              228,375
- --------------------------------------------------------------------------------
Total Corporate Bonds (cost $3,408,810) ...................            3,954,158
- --------------------------------------------------------------------------------
Preferred Stock - 19.3%
Automotive - Truck Parts and Equipment - 1.4%
       3,712       Federal-Mogul Financing Trust Corp.
                     convertible, 7.00% ...................              219,936
Cable Television - 4.0%
       2,750       Adelphia Communications Corp.
                     - Series D, convertible, 5.50% .......              529,375
       1,545       MediaOne Group, Inc., convertible, 6.25%              139,822

                                                                         669,197

Cruise Lines - 2.3%
       2,700       Royal Caribbean Cruises, Ltd.
                     convertible, 7.25% ...................              371,925

Electric - Integrated - 8.3%
      11,275       Houston Industries, Inc., convertible, 7.00%        1,344,544

Internet Software - 1.7%
       5,575       PSINet, Inc. - Series C, convertible, 6.75%           268,994

Telephone - Integrated - 1.6%
       2,936       NEXTLINK Communications, Inc.
                     convertible, 6.50% ...................              256,166
- --------------------------------------------------------------------------------
Total Preferred Stock (cost $2,749,734) ...................            3,130,762
- --------------------------------------------------------------------------------
Warrants - 0.7%
Computer Services - 0%
          13       Bell Technology Group, Ltd.
                     - expires 5/1/05* ....................     $          2,047

Multimedia - 0.7%
       5,750       Viacom, Inc. - expires 7/7/99* .........              106,375
- --------------------------------------------------------------------------------
Total Warrants (cost $79,460) .............................              108,422
- --------------------------------------------------------------------------------
Repurchase Agreement - 5.0%
$    815,000       Morgan Stanley & Co., Inc.
                     5.10%, dated 6/30/99, maturing 7/1/99,
                     to be repurchased at $815,115
                     collateralized by $1,098,334 in
                     Fannie Mae, 5.50%-8.50%, 1/1/04-7/1/29
                     with a value of $831,394 (cost $815,000)            815,000
- --------------------------------------------------------------------------------
Total Investments - (total cost $12,557,143) - 99.2% ......           16,072,011
- --------------------------------------------------------------------------------
Cash, Receivables and Other Assets, net of Liabilities - 0.8%            133,041
- --------------------------------------------------------------------------------
Net Assets - 100% .........................................     $     16,205,052
- --------------------------------------------------------------------------------

Summary of Investments by Country, June 30, 1999

Country              % of Investment Securities                     Market Value
- --------------------------------------------------------------------------------
Bermuda                                    1.9%                 $        306,637
Finland                                    1.6%                          254,212
Mexico                                     0.6%                           96,300
Netherlands                                0.9%                          148,129
United Kingdom                             0.4%                           68,659
United States++                           94.6%                       15,198,074
- --------------------------------------------------------------------------------
Total                                    100.0%                 $     16,072,011

++Includes Short-Term Securities (89.5% excluding Short-Term Securities)

See Notes to Schedules of Investments.

                                          Janus Aspen Series / June 30, 1999  29
<PAGE>

Janus | Aspen Growth and Income Portfolio

[PHOTO]
David Corkins
portfolio manager

I am  pleased  to report  that for the six  months  ended  June 30,  1999,  your
investment in Janus Aspen Growth and Income Portfolio appreciated 20.57% for its
Institutional  Shares and 20.27% for its Retirement  Shares. In comparison,  the
Portfolio's benchmark index, the S&P 500, returned 12.38%.(1)

While  the  first  three  months  of  the  year  were  a  continuation   of  the
record-setting  gains  we saw at the  end of  1998,  growth  stocks  suffered  a
short-term  setback during the second  quarter.  In response to steadily  rising
long-term  interest rates, as well as the belief that Asia's economy had finally
hit bottom, the market began to favor cyclical stocks that normally perform well
during an economic recovery. The movement into cyclicals was brief, however, and
growth stocks quickly regained their dominance.

Although we always take the macroeconomic  environment into  consideration  when
selecting  investments  for the Portfolio,  we won't build a position in a stock
unless we've  personally  visited with the company's  senior  management and the
people  running the  day-to-day  operations.  We also avoid making large bets on
individual sectors,  which explains the Portfolio's  eclectic mix of stocks. And
finally,   we  balance  our  growth-oriented   holdings  with   income-producing
investments,   including  dividend-paying  stocks,  convertible  securities  and
high-yield bonds.

This strategy has clearly proved  successful.  Contributing  to the  Portfolio's
success  during the period were  Comcast,  Time  Warner and Cox  Communications.
These three  innovative  companies  are on the cutting edge of  broadband  cable
technology,   which  allows  users  to  combine  telephony,  digital  video  and
high-speed Internet access over one platform.  Skeptics may view this technology
and  its  many  applications  as   pie-in-the-sky   dreams.  As  noted  football
philosopher  Bear  Bryant,  speaking  to a young  player,  once  put  it,  "Son,
`potential'  is a French  word that  means...you  ain't  worth a damn  yet." The
opportunity  inherent  in  broadband  cable,   however,  is  more  than  a  mere
possibility.  Early  test  market  results  for  many  of  these  services  show
surprisingly  high penetration  rates that exceed 30%. What's more, we have done
extensive  research into broadband cable and are enthusiastic in our outlook for
this industry.

In  the  areas  of  computer  and  Internet  technology,  the  Portfolio  gained
significantly from our holdings in Cisco Systems,  America Online and Microsoft.
Another  standout  performer  we added  during the period was Sun  Microsystems,
which manufactures the servers that house the majority of Internet Web sites. As
the eBays and Amazons of the world grow, Sun appears well positioned to benefit.
Additionally,  Texas  Instruments,  which has  recently  engineered a remarkable
turnaround,   substantially   boosted   performance.   After   jettisoning   its
less-profitable  businesses,  TI is now  concentrating  its efforts on producing
chip sets,  called digital  signal  processors,  used in Internet  applications,
networking   equipment  and  cellular  phones,  to  name  a  few.  Today,  Texas
Instruments  is the leader in digital  signal  processing,  with a market  share
exceeding that of its next two competitors combined.

Another intriguing story is General Electric. Since CEO Jack Welch took the helm
almost 20 years  ago,  GE has  transformed  itself  from a stodgy  manufacturing
corporation  into  a  service-oriented   organization  that  owns  14  different
businesses,  each  occupying the number one or number two spot in its respective
industry.  However,  it is GE Capital,  offering a variety of financial services
including  mutual fund  management,  financing,  asset management and insurance,
that produces the company's  enormous cash flow. This,  combined with GE's power
generation and distribution business, has resulted in satisfying returns for the
Portfolio.

As for  stocks  that have  been a drag on  performance,  pharmaceutical  company
Warner-Lambert   was   notable.    Rising   interest   rates,   recent   product
disappointments,  and talk of  increased  government  regulation  put a crimp in
earnings,  and we sold the  position.  However,  we've  added to our  holding in
Pharmacia & Upjohn,  an  attractively  valued firm whose pipeline  contains some
promising new drugs.

In closing,  while many indicators  point to a healthy economy going forward,  I
prefer not to make detailed  economic  forecasts.  Instead,  we will continue to
focus,  as always,  on finding  well-managed,  high-quality  companies  that can
perform regardless of the economic backdrop.

Thank you for investing in Janus Aspen Growth and Income Portfolio.

Portfolio Asset Mix                  June 30, 1999        December 31, 1998
- --------------------------------------------------------------------------------
Equities                                     76.7%                    83.3%
Top 10 Equities/Preferred                    26.9%                    31.1%
Number of Stocks                                95                       73
Fixed-Income Securities                       1.9%                     0.7%
Cash & Cash Equivalents                      21.4%                    16.0%
- --------------------------------------------------------------------------------

(1)  All returns include reinvested dividends.

Past performance does not guarantee future results.

30  Janus Aspen Series / June 30, 1999
<PAGE>

Cumulative Total Return(1)
For the Periods Ended June 30, 1999 (unaudited)
- --------------------------------------------------------------------------------
Institutional Shares (Inception Date 5/1/98)
  One Year                                                   36.78%
  From Inception                                             37.14%
- --------------------------------------------------------------------------------
S&P 500 Index
  One Year                                                   22.76%
  From Portfolio Inception                                   21.54%
- --------------------------------------------------------------------------------
Retirement Shares (Inception Date 5/1/98)
  One Year                                                   36.11%
  From Inception                                             36.45%
- --------------------------------------------------------------------------------

(1)  All returns reflect reinvested  dividends.  The Portfolio's  securities may
     differ significantly from the securities in the Index. Index returns do not
     include  taxes or  dividends  and interest  payments or operating  expenses
     necessary to maintain a portfolio  consisting of the same  securities  that
     are in the Index.  These returns do not reflect the charges and expenses of
     any particular  insurance product or qualified plan.  Investment return and
     principal value will fluctuate so that shares, when redeemed,  may be worth
     more or less than their  original cost.  The adviser  voluntarily  waives a
     portion of the Portfolio's  expenses.  Without such waiver, the Portfolio's
     total returns for each class would have been lower.  Past  performance does
     not guarantee future results.

SCHEDULE OF INVESTMENTS (unaudited)

Shares or Principal Amount                                        Market Value
- --------------------------------------------------------------------------------
Common Stock - 72.6%
Advertising Sales - 0.7%
       5,000       Outdoor Systems, Inc.* .................     $        182,500

Aerospace and Defense - 0.5%
       2,000       AlliedSignal, Inc. .....................              126,000

Automotive - Cars and Light Trucks - 0.6%
       2,800       Ford Motor Co. .........................              158,025

Beverages - Non-Alcoholic - 0.4%
       4,090       Pepsi Bottling Group, Inc. .............               94,326

Brewery - 1.2%
       4,200       Anheuser-Busch Companies, Inc. .........              297,937

Broadcast Services and Programming - 3.4%
      19,500       AT&T Corp./Liberty Media Group - Class A*             716,625
       2,000       Clear Channel Communications, Inc.* ....              137,875

                                                                         854,500

Cable Television - 6.4%
         600       Adelphia Communications Corp. - Class A*               38,175
       3,100       Cablevision Systems Corp.* .............              217,000
       2,500       Century Communications Corp. - Class A*               115,000
      20,400       Comcast Corp. - Class A ................              784,125
       4,800       Cox Communications, Inc. - Class A* ....              176,700
       1,000       MediaOne Group, Inc.* ..................               74,375
       4,000       TCA Cable TV, Inc. .....................              222,000

                                                                       1,627,375

Cellular Telecommunications - 0.6%
       2,700       Sprint Corp./PCS Group* ................              154,238

Circuits - 0.3%
       1,000       Maxim Integrated Products, Inc.* .......     $         66,500

Commercial Banks - 1.6%
      10,300       Firstar Corp. ..........................              288,400
       2,200       Mercantile Bancorporation, Inc. ........              125,675

                                                                         414,075

Commercial Services - 0.2%
       1,900       Paychex, Inc. ..........................               60,563

Computer Data Security - 0.7%
       2,000       VeriSign, Inc.* ........................              172,500

Computer Graphics - 0%
         200       NVIDIA Corp.* ..........................                3,825

Computer Software - 2.7%
       7,500       Microsoft Corp.* .......................              676,406

Computers - Integrated Systems - 0%
       1,154       Tecnost S.p.A.* ........................                2,850

Computers - Memory Devices - 0.7%
       3,205       EMC Corp.* .............................              176,275

Computers - Micro - 2.4%
       1,500       Apple Computer, Inc.* ..................               69,469
       8,000       Sun Microsystems, Inc.* ................              551,000

                                                                         620,469

Containers - Paper and Plastic - 0.5%
       1,900       Sealed Air Corp.* ......................              123,263

Cruise Lines - 0.3%
       1,600       Royal Caribbean Cruises, Ltd. ..........               70,000

See Notes to Schedules of Investments.

                                          Janus Aspen Series / June 30, 1999  31
<PAGE>

Janus | Aspen Growth and Income Portfolio

SCHEDULE OF INVESTMENTS (unaudited)

Shares or Principal Amount                                        Market Value
- --------------------------------------------------------------------------------
Diversified Financial Services - 1.3%
       7,200       Citigroup, Inc. ........................     $        342,000

Diversified Operations - 5.2%
       6,500       General Electric Co. ...................              734,500
       6,000       Tyco International, Ltd. ...............              568,500

                                                                       1,303,000

Electronic Components - Semiconductors - 2.1%
       2,400       Intel Corp. ............................              142,800
       2,600       Texas Instruments, Inc. ................              377,000

                                                                         519,800

Finance - Credit Card - 1.5%
       3,000       American Express Co. ...................              390,375

Finance - Investment Bankers/Brokers - 1.4%
       1,450       Charles Schwab Corp. ...................              159,319
       7,000       Donaldson, Lufkin & Jenrette, Inc.* ....              206,500

                                                                         365,819

Finance - Mortgage Loan Banker - 0.7%
       2,500       Fannie Mae .............................              170,937

Food - Retail - 0.9%
       8,200       Kroger Co.* ............................              229,087

Internet Content - 1.1%
         100       About.com, Inc.* .......................                5,187
       1,200       DoubleClick, Inc.* .....................              110,100
       1,000       InfoSpace.com, Inc.* ...................               47,000
         600       Inktomi Corp.* .........................               78,337
         100       iTurf, Inc. - Class A* .................                1,806
       2,035       Launch Media, Inc.* ....................               36,376

                                                                         278,806

Internet Software - 3.1%
         100       Allaire Corp.* .........................                6,825
       5,300       America Online, Inc.* ..................              585,650
       2,100       pcOrder.com, Inc.* .....................               87,281
         430       Persistance Software, Inc.* ............                5,859
       1,000       Portal Software, Inc.* .................               46,313
       1,000       USinternetworking, Inc.* ...............               42,000

                                                                         773,928

Machinery - General Industrial - 0.9%
       1,534       Mannesmann A.G .........................              228,911

Medical - Drugs - 3.2%
       2,000       Eli Lilly and Co. ......................              143,250
       2,500       Pfizer, Inc. ...........................              274,375
       4,000       Pharmacia & Upjohn, Inc. ...............              227,250
       3,000       Schering-Plough Corp. ..................              159,000

                                                                         803,875

Medical Instruments - 1.4%
       2,000       Boston Scientific Corp.* ...............               87,875
       3,300       Medtronic, Inc. ........................              256,987

                                                                         344,862

Money Center Banks - 0.9%
       1,400       Bank of America Corp. ..................              102,637
       1,900       Republic New York Corp. ................              129,556

                                                                         232,193

Multi-Line Insurance - 2.1%
       3,000       American Bankers Insurance Group, Inc. .     $        163,313
       2,800       American International Group, Inc. .....              327,775
       1,100       Assicurazioni Generali .................               38,161

                                                                         529,249

Multimedia - 4.9%
      11,000       Time Warner, Inc. ......................              808,500
       9,500       Viacom, Inc. - Class B* ................              418,000

                                                                       1,226,500

Networking Products - 3.0%
      11,800       Cisco Systems, Inc.* ...................              761,100

Optical Supplies - 0.5%
       1,200       Allergan, Inc.* ........................              133,200

Pipelines - 2.3%
       7,000       Enron Corp. ............................              572,250

Radio - 1.1%
       1,400       Entercom Communications Corp.* .........               59,850
       3,000       Hispanic Broadcasting Corp.* ...........              227,625

                                                                         287,475

Real Estate Investment Trusts - 0.1%
       1,200       MGI Properties, Inc. ...................               33,900

Retail - Building Products - 1.1%
       4,200       Home Depot, Inc. .......................              270,638

Retail - Discount - 1.2%
       3,700       Costco Companies, Inc.* ................              296,231

Retail - Internet - 1.7%
         700       Amazon.com, Inc.* ......................               87,587
      10,000       barnesandnoble.com Inc.* ...............              180,000
       1,000       eBay, Inc.* ............................              151,000

                                                                         418,587

Retail - Office Supplies - 0.4%
       3,000       Staples, Inc.* .........................               92,813

Savings/Loan/Thrifts - 0.1%
       1,500       Thistle Group Holdings Co. .............               13,219

Telecommunication Equipment - 2.3%
       6,400       Nokia Oyj (ADR) ........................              586,000
         100       Tut Systems, Inc.* .....................                4,894

                                                                         590,894

Telecommunication Services - 1.1%
         225       Allegiance Telecom, Inc.* ..............               12,347
       5,000       McLeodUSA, Inc. - Class A* .............              275,000

                                                                         287,347

Telephone - Integrated - 0.6%
       2,700       CenturyTel, Inc. .......................              107,325
       4,255       Telecom Italia S.p.A ...................               44,122

                                                                         151,447

Telephone - Long Distance - 2.3%
       5,800       MCI WorldCom, Inc.* ....................              500,250
       1,310       Sprint Corp./FON Group .................               69,184

                                                                         569,434

Transportation - Air Freight - 0.9%
       4,000       FDX Corp.* .............................              217,000
- --------------------------------------------------------------------------------
Total Common Stock (cost $15,771,494) .....................           18,316,504
- --------------------------------------------------------------------------------

See Notes to Schedules of Investments.

32  Janus Aspen Series / June 30, 1999
<PAGE>

Shares or Principal Amount                                        Market Value
- --------------------------------------------------------------------------------
Corporate Bonds - 1.8%
Cable Television - 0.6%
$      5,000       Adelphia Communications Corp., 7.75%
                     senior notes, due 1/15/09 ............     $          4,675
     130,000       Charter Communications Holdings L.L.C.
                     8.625%, senior notes, due 4/1/09+ ....              124,800
       1,000       Mediacom L.L.C., 8.50%
                     senior notes, due 4/15/08 ............                  987
      15,000       Rifkin Acquisition Partners L.P., 11.125%
                     senior subordinated notes, due 1/15/06               16,894

                                                                         147,356

Distribution and Wholesale - 0%
       8,000       Aviation Sales Co., 8.125%
                     company guaranteed notes, due 2/15/08                 7,600

Food - Retail - 0%
       7,000       Fred Meyer, Inc., 7.45%
                     company guaranteed notes, due 3/1/08 .                7,105

Internet Software - 0.1%
      30,000       Exodus Communications, Inc., 11.25%
                     senior notes, due 7/1/08 .............               31,200

Metal - Diversified - 0%
       1,000       Haynes International, Inc., 11.625%
                     senior notes, due 9/1/04 .............                  942

Retail - Internet - 0.4%
     104,000       Amazon.com, Inc., 4.75%
                     convertible subordinated debentures
                     due 2/1/09+ ..........................              101,400

Retail - Leisure Products - 0%
       5,000       Selmer Co., Inc., 11.00%
                     senior subordinated notes, due 5/15/05                5,319

Telecommunication Services - 0.1%
      25,000       Allegiance Telecom, Inc., 12.875%
                     senior notes, due 5/15/08 ............               26,687
       3,000       Level 3 Communications, Inc., 9.125%
                     senior notes, due 5/1/08 .............                2,955

                                                                          29,642

Telephone - Integrated - 0.6%
      83,000       NTL, Inc., 7.00%
                     convertible subordinated notes
                     due 12/15/08+ ........................              135,394
- --------------------------------------------------------------------------------
Total Corporate Bonds (cost $469,160) .....................              465,958
- --------------------------------------------------------------------------------
Foreign Bond - 0.1%
EUR
      14,500       Tecnost International N.V., 4.487%
                     company guaranteed notes, due 6/23/04
                     (cost $15,002) .......................               15,183
- --------------------------------------------------------------------------------
Preferred Stock - 4.1%
Automotive - Cars and Light Trucks - 0.3%
          30       Porsche A.G ............................               70,539

Automotive - Truck Parts and Equipment - 0.3%
       1,100       Federal-Mogul Financing Trust Corp.
                     convertible, 7.00% ...................               65,175

Broadcast Services and Programming - 0.7%
         500       TCI Pacific Communications, Inc.
                     - Series A, convertible, 5.00% .......              170,831

Cable Television - 1.7%
       1,250       Adelphia Communications Corp.
                     - Series D, convertible, 5.50% .......     $        240,625
         700       MediaOne Group, Inc., convertible, 4.50%              104,869
       1,000       MediaOne Group, Inc., convertible, 6.25%               90,500

                                                                         435,994

Cruise Lines - 0%
          70       Royal Caribbean Cruises, Ltd.
                     convertible, 7.25% ...................                9,642

Electric - Integrated - 1.0%
       2,200       Houston Industries, Inc., convertible, 7.00%          262,350

Radio - 0.1%
         165       Chancellor Media Corp., convertible, $3 00             18,088
- --------------------------------------------------------------------------------
Total Preferred Stock (cost $868,172) .....................            1,032,619
- --------------------------------------------------------------------------------
Repurchase Agreement - 24.3%
$  6,130,000       Morgan Stanley & Co., Inc.
                     5.10%, dated 6/30/99, maturing 7/1/99,
                     to be repurchased at $6,130,868
                     collateralized by $8,261,090 in
                     Fannie Mae, 5.50%-8.50%, 1/1/04-7/1/29
                     with a value of $6,253,309
                     (cost $6,130,000)      6,130,000
- --------------------------------------------------------------------------------
Total Investments (cost $23,253,828 ) - 102.9% ............           25,960,264
- --------------------------------------------------------------------------------
Liabilities, net of Cash, Receivables and Other Assets - (2.9%)        (737,526)
- --------------------------------------------------------------------------------
Net Assets - 100% .........................................          $25,222,738
- --------------------------------------------------------------------------------

Summary of Investments by Country, June 30, 1999

Country              % of Investment Securities                     Market Value
- --------------------------------------------------------------------------------
Bermuda                                    2.2%                 $        568,500
Finland                                    2.3%                          586,000
Germany                                    1.2%                          299,450
Italy                                      0.3%                           85,133
Netherlands                                0.1%                           15,183
United States++                           93.9%                       24,405,998
- --------------------------------------------------------------------------------
Total                                    100.0%                 $     25,960,264

++Includes Short-Term Securities (70.4% excluding Short-Term Securities)

See Notes to Schedules of Investments.

                                          Janus Aspen Series / June 30, 1999  33
<PAGE>

Janus | Aspen Flexible Income Portfolio

[PHOTO]
Ron Speaker
portfolio manager

For the six months ended June 30, 1999,  Janus Aspen Flexible  Income  Portfolio
returned  (0.63%) for its  Institutional  Shares and (1.05%) for its  Retirement
Shares.  This compares with a (2.28%) loss posted by its  benchmark,  the Lehman
Brothers Government/Corporate Bond Index.(1)

While the Portfolio's  performance was solid relative to its Index, its negative
results were both a reflection of rising long-term interest rates and a flood of
new supply in the fixed-income market, both of which pressured bond prices. This
environment was made even more challenging by the threat of higher inflation, as
the U.S.  economy  continued to grow  stronger and longer than  expected.  In an
attempt to stave off inflation,  the Federal Reserve Board increased  short-term
interest rates by a quarter-point on June 30.

Against this economic backdrop, investment-grade and Treasury bonds did not meet
our  expectations.   We  consequently  reduced  the  Portfolio's   weighting  in
Treasuries,  which are more sensitive to changes in interest  rates. At the same
time,   we   increased   our  focus  on   select   high-yield   securities   and
intermediate-term  investment-grade bonds. High-yield bonds proceeded to account
for nearly 36% of the  Portfolio  at the close of the period,  compared to a 26%
weighting on December 31, 1998.  Treasuries,  on the other hand, comprised about
11% of the Portfolio, down from 23% on December 31, 1998.

Despite some  volatility,  stocks  continued to gain  throughout the period.  As
such,   high-yield  bonds,  which  correlate  closely  with  stocks,   were  the
best-performing  asset class within the fixed-income  market. A standout in this
area was  Globix,  a  company  that  provides  off-site  Web  hosting  for large
corporations. As the Internet becomes a more vital business tool, many companies
are realizing the  importance of securing or protecting  the servers where their
Web sites reside.  This means housing servers in  free-standing  structures that
have their own power  supply,  security,  climate  control - even seismic  shock
absorbers.  Globix offers a cost-effective and expert outsourcing solution,  and
has gained as a result.  Also  helping  this  position  was a  secondary  equity
financing, which caused both its stock and bonds to rally.

Areas  that  were   well-represented   in  the  Portfolio's   holdings  included
consumer-oriented industries such as cable and supermarkets. TCI Communications,
Inc., Time Warner and Jones Intercable were among our top cable performers.  All
of  these  positions  benefited  from  value-added  services  made  possible  by
broadband  technology,  such as cable telephony,  high-speed Internet access and
video-on-demand. However, our bonds in Jones Intercable were also helped by news
of its acquisition by Comcast, a higher-rated competitor.

Unfortunately,  the  Portfolio's  supermarket  holdings  didn't  fare  as  well,
particularly our Fred Meyer position. Fred Meyer took on investment-grade status
following its acquisition by Kroger, and was hurt by the general weakness in the
bond market. Nonetheless, we remain enthusiastic about the supermarket business,
which continues to enjoy rapid consolidation.

Other bonds that fell short of our expectations  included  Metricom,  a wireless
Internet  access company,  and SIG Capital Trust,  an insurance  firm.  Frequent
visits  and  conversations  with  Metricom's  management  revealed  a  cash-flow
shortage at the company,  compelling  us to sell our  position.  Meanwhile,  SIG
Capital  Trust's  nonstandard  auto and crop  insurance  business  suffered from
pricing pressure and uncooperative weather. However, based on its move to a more
competitive  pricing  structure,  we remain  optimistic  about SIG's  future and
decided to maintain the position.

Going forward,  until we see indications that the U.S. economy is slowing, we'll
carry out a relatively conservative  investment approach,  focusing primarily on
bonds with shorter  maturities and muted  interest-rate  sensitivity.  Even more
important, we'll stand firmly by our strategy of investing only in the companies
we believe capable of strong performance regardless of the economic environment.

Thank  you  for  your  continued  investment  in  Janus  Aspen  Flexible  Income
Portfolio.

Portfolio Asset Mix                  June 30, 1999        December 31, 1998
- --------------------------------------------------------------------------------
Investment-Grade
  Corporate Bonds                            39.4%                    36.0%
High-Yield/High-Risk Bonds                   35.8%                    26.0%
Long-Term U.S. Government
  Obligations and Agencies                   11.1%                    23.8%
Foreign Non-Dollar Bonds                      2.0%                     1.6%
Preferred Stock                               1.2%                     2.4%
Cash & Cash Equivalents                      10.5%                    10.2%
- --------------------------------------------------------------------------------
Portfolio Profile
- --------------------------------------------------------------------------------
Weighted Average Maturity                 7.9 Yrs.                 8.7 Yrs.
Average Modified Duration*                5.4 Yrs.                 6.0 Yrs.
30-Day Average Yield
  Institutional Shares**                     7.45%                    6.21%
  Retirement Shares**                        6.83%                    5.70%
Average Rating                                 BBB                       A+
- --------------------------------------------------------------------------------
 * A theoretical measure of price volatility.
** Yields will fluctuate.

(1)  All returns include reinvested dividends.

Past performance does not guarantee future results.

34  Janus Aspen Series / June 30, 1999
<PAGE>

Average Annual Total Return(1)
For the Periods Ended June 30, 1999 (unaudited)
- --------------------------------------------------------------------------------
Institutional Shares (Inception Date 9/13/93)
  1 Year                                                      2.69%
  5 Year                                                     10.36%
  From Inception                                              8.86%
- --------------------------------------------------------------------------------
Lehman Brothers Govt./Corp. Bond Index
  1 Year                                                      2.70%
  5 Year                                                      7.76%
  From Inception Date of Institutional Shares                 5.86%
- --------------------------------------------------------------------------------
Retirement Shares (Inception Date 5/1/97)
  1 Year                                                      2.01%
  5 Year                                                      9.74%
  From Portfolio Inception                                    8.23%
- --------------------------------------------------------------------------------
Returns shown for  Retirement  Shares for periods  prior to their  inception are
derived from the historical  performance of  Institutional  Shares,  adjusted to
reflect the higher operating expenses of Retirement Shares.

(1)  All returns reflect reinvested  dividends.  The Portfolio's  securities may
     differ significantly from the securities in the Index. Index returns do not
     include  taxes or  dividends  and interest  payments or operating  expenses
     necessary to maintain a portfolio  consisting of the same  securities  that
     are in the Index.  These returns do not reflect the charges and expenses of
     any particular  insurance product or qualified plan.  Investment return and
     principal value will fluctuate so that shares, when redeemed,  may be worth
     more or less than their original cost. Past  performance does not guarantee
     future results.

SCHEDULE OF INVESTMENTS (unaudited)

Shares or Principal Amount                                        Market Value
- --------------------------------------------------------------------------------
Corporate Bonds - 75.2%
Automotive - Truck Parts and Equipment - 1.9%
$    750,000       Dana Corp., 6.25%
                     notes, due 3/1/04 ....................     $        737,813
   1,500,000       Federal-Mogul Corp., 7.50%
                     notes, due 1/15/09+ ..................            1,385,625
   1,000,000       TRW, Inc., 7.125%
                     senior notes, due 6/1/09+ ............              976,250

                                                                       3,099,688

Beverages - Non-Alcoholic - 0.9%
   1,500,000       Coca-Cola Enterprises, Inc., 6.95%
                     debentures, due 11/15/26 .............            1,432,500

Beverages - Wine and Spirits - 0.6%
   1,000,000       Seagram, Joseph E. & Sons, Inc., 6.80%
                     company guaranteed notes, due 12/15/08              963,750

Brewery - 0.6%
   1,000,000       Anheuser-Busch Companies, Inc., 5.65%
                     notes, due 9/15/08 ...................              933,750

Broadcast Services and Programming - 2.7%
     250,000       Digital Television Services, Inc., 12.50%
                     company guaranteed notes, due 8/1/07 .              279,062
   4,000,000       Liberty Media Group, 7.875%
                     bonds, due 7/15/09+ ..................            3,976,160

                                                                       4,255,222

Cable Television - 5.0%
     500,000       American Telecasting, Inc., 14.50%
                     senior discount notes, due 6/15/04 ...              513,125
     500,000       Century Communications Corp., 8.375%
                     senior notes, due 12/15/07 ...........              488,750
   2,500,000       Charter Communications Holdings L.L.C.
                     8.625%, senior notes, due 4/1/09+ ....            2,400,000
   1,000,000       Jones Intercable, Inc., 7.625%
                     senior notes, due 4/15/08 ............            1,037,500
                   Lenfest Communications, Inc.:
   1,000,000         10.50%, senior subordinated notes,
                     due 6/15/06 ..........................            1,147,500
   1,000,000         7.625%, senior notes, due 2/15/08 ....            1,032,500
   1,500,000       TCI Communications, Inc., 6.875%
                     senior notes, due 2/15/06 ............            1,494,375

                                                                       8,113,750

Casino Hotels - 1.4%
$    500,000       Santa Fe Hotel, Inc., 11.00%
                     first mortgage notes, due 12/15/00 ...     $        500,000
     300,000       Station Casinos, Inc., 8.875%
                     senior subordinated notes, due 12/1/08              293,250
   1,500,000       Venetian Casino Resort L.L.C., 12.25%
                     company guaranteed notes, due 11/15/04            1,483,125

                                                                       2,276,375

Casino Services - 0.5%
     750,000       Isle of Capri Black Hawk L.L.C., 13.00%
                     first mortgage bonds, due 8/31/04 ....              828,750

Cellular Telecommunications - 0.8%
   1,250,000       360(degrees) Communications Co., 6.65%
                     senior notes, due 1/15/08 ............            1,232,812

Ceramic Products - 0.1%
     100,000       Unifrax Investment Corp., 10.50%
                     senior notes, due 11/1/03 ............              101,625

Commercial Banks - 3.1%
   1,500,000       Bank One Texas, 6.25%
                     subordinated notes, due 2/15/08 ......            1,432,500
   1,000,000       City National Bank Corp., 6.375%
                     subordinated notes, due 1/15/08 ......              947,500
   1,000,000       First Union National Bank, 5.80%
                     subordinated notes, due 12/1/08 ......              918,750
     700,000       Hudson United Bancorp, 8.20%
                     subordinated debentures, due 9/15/06 .              708,750
   1,000,000       Provident Trust I Corp., 8.29%
                     company guaranteed notes, due 4/15/28             1,005,000

                                                                       5,012,500

Computer Services - 1.5%
   2,500,000       Globix Corp., 13.00%
                     senior notes, due 5/1/05 .............            2,375,000

Computers - Micro - 2.0%
                   IBM Corp.:
   2,500,000         5.375%, notes, due 2/1/09 ............            2,278,125
   1,000,000         7.00%, debentures, due 10/30/25 ......              985,000

                                                                       3,263,125

See Notes to Schedules of Investments.

                                          Janus Aspen Series / June 30, 1999  35
<PAGE>

Janus | Aspen Flexible Income Portfolio

SCHEDULE OF INVESTMENTS (unaudited)

Shares or Principal Amount                                        Market Value
- --------------------------------------------------------------------------------
Consulting Services - 1.5%
$  2,500,000       Comdisco, Inc., 5.95%
                     notes, due 4/30/02 ...................     $      2,456,250

Cruise Lines - 0.6%
   1,000,000       Royal Caribbean Cruises, Ltd., 7.00%
                     senior notes, due 10/15/07 ...........              972,500

Distribution and Wholesale - 0.3%
     445,000       Aviation Sales Co., 8.125%
                     company guaranteed notes, due 2/15/08               422,750

Diversified - Financial Services - 1.1%
   1,650,000       Local Financial Corp., 11.00%
                     senior notes, due 9/8/04 .............            1,699,500

Electric - Generation - 0.6%
   1,000,000       Caithness Coso Funding Corp., 6.80%
                     secured notes, due 12/15/01+ .........              991,250

Electric - Integrated - 0.4%
     600,000       El Paso Electric Co., 9.40%
                     first mortgage bonds, due 5/1/11 .....              686,250

Fiber Optics - 0.8%
   1,250,000       Metromedia Fiber Network, Inc., 10.00%
                     senior notes, due 11/15/08 ...........            1,284,375

Finance - Auto Loans - 3.5%
                   Ford Motor Credit Co.:
   1,000,000         5.375%, notes, due 10/15/02 ..........              968,750
   1,000,000         6.75%, notes, due 8/15/08 ............              985,000
   1,000,000         5.80%, senior notes, due 1/12/09 .....              913,750
   3,000,000       General Motors Acceptance Corp., 5.85%
                     senior unsubordinated notes, due 1/14/09          2,741,250

                                                                       5,608,750

Finance - Other Services - 2.9%
     500,000       First American Capital Trust, 8.50%
                     company guaranteed notes, due 4/15/12               522,500
   2,000,000       Mellon Financial Co., 6.375%
                     subordinated notes, due 2/15/10 ......            1,907,500
     500,000       Newcourt Credit Group, Inc., 6.875%
                     notes, due 2/16/05+ ..................              479,375
       1,000       Ono Finance PLC, 13.00%
                     units, due 5/1/09+ ...................            1,005,000
     500,000       SIG Capital Trust I, 9.50%
                     company guaranteed notes, due 8/15/27               373,750
     500,000       Veritas Capital Trust, 10.00%
                     company guaranteed notes, due 1/1/28 .              398,750

                                                                       4,686,875

Food - Diversified - 0.5%
     750,000       Ralston Purina Co., 7.875%
                     debentures, due 6/15/25 ..............              784,687

Food - Retail - 8.8%
     500,000       Carrols Corp., 9.50%
                     senior subordinated notes, due 12/1/08              477,500
                   Fred Meyer, Inc.:
   2,000,000         7.15%, company guaranteed notes,
                     due 3/1/03 ...........................            2,012,500
   4,000,000         7.45%, company guaranteed notes,
                     due 3/1/08 ...........................            4,060,000
   2,000,000       Marsh Supermarkets, Inc., 8.875%
                     company guaranteed notes, due 8/1/07 .            2,035,000
     910,000       Pantry, Inc., 10.25%
                     company guaranteed notes, due 10/15/07              923,650
                   Safeway, Inc.:
     450,000         5.875%, notes, due 11/15/01 ..........              444,937
   3,500,000         6.50%, notes, due 11/15/08 ...........            3,381,875
     725,000       Star Markets Co., Inc., 13.00%
                     senior subordinated notes, due 11/1/04              792,969

                                                                      14,128,431

Gambling - Non-Hotel Casinos - 0.2%
$    375,000       Isle of Capri Casinos, Inc., 8.75%
                     senior subordinated notes, due 4/15/09+    $        351,562

Hotels and Motels - 0.6%
   1,000,000       Marriott International, Inc., 6.625%
                     notes, due 11/15/03 ..................              975,000

Independent Power Producer - 0.3%
     500,000       Calpine Corp., 7.75%
                     senior notes, due 4/15/09 ............              477,500

Internet Software - 0.5%
     750,000       Exodus Communications, Inc., 11.25%
                     senior notes, due 7/1/08 .............              780,000

Leisure, Recreation and Gaming - 0.3%
     500,000       Hard Rock Hotel, Inc., 9.25%
                     senior subordinated notes, due 4/1/05               473,750

Life and Health Insurance - 1.5%
   1,725,000       Conseco, Inc., 7.60%
                     senior notes, due 6/21/01 ............            1,727,156
     742,000       Delphi Financial Group, Inc., 8.00%
                     senior notes, due 10/1/03 ............              753,130

                                                                       2,480,286

Machinery - General Industrial - 0.6%
   1,000,000       Tokheim Corp., 11.375%
                     senior subordinated notes, due 8/1/08+              937,500

Manufacturing - 0.3%
     500,000       Day International Group, Inc., 11.125%
                     senior notes, due 6/1/05 .............              533,125

Medical - Hospitals - 0.3%
     500,000       Columbia/HCA Healthcare Corp., 8.36%
                     debentures, due 4/15/24 ..............              466,875

Medical Labs and Testing Services - 1.5%
     500,000       Quest Diagnostics, Inc., 9.875%
                     senior subordinated notes, due 7/1/09+              502,500
   1,775,000       Unilab Corp., 11.00%
                     senior notes, due 4/1/06 .............            1,948,063

                                                                       2,450,563

Multimedia - 3.1%
     425,000       Dialog Corp. PLC, 11.00%
                     senior subordinated notes, due 11/15/07             394,187
   1,750,000       News America, Inc., 6.625%
                     senior notes, due 1/9/08 .............            1,664,687
                   Time Warner, Inc.:
   1,000,000         8.18%, notes, due 8/15/07 ............            1,066,250
   1,000,000         6.95%, company guaranteed notes,
                     due 1/15/28 ..........................              921,250
   1,000,000       Walt Disney Co. (The), 6.75%
                     senior notes, due 3/30/06 ............            1,003,750

                                                                       5,050,124

Music/Clubs - 0.8%
   1,000,000       SFX Entertainment, Inc., 9.125%
                     company guaranteed notes, due 2/1/08 .              977,500
     880,000       V2 Music Holdings PLC, zero coupon
                     senior discount notes, due 4/15/08+ ..              305,800

                                                                       1,283,300

Networking Products - 1.0%
   1,500,000       Concentric Network Corp., 12.75%
                     senior notes, due 12/15/07 ...........            1,548,750

Office Automation and Equipment - 0.2%
     500,000       Dictaphone Corp., 11.75%
                     senior subordinated notes, due 8/1/05               348,750

See Notes to Schedules of Investments.

36  Janus Aspen Series / June 30, 1999
<PAGE>

Shares or Principal Amount                                        Market Value
- --------------------------------------------------------------------------------
Oil Companies - Integrated - 0.3%
$    500,000       Pennzoil-Quaker State Co., 6.75%
                     notes, due 4/1/09 ....................     $        479,375

Optical Supplies - 0.6%
     950,000       Bausch & Lomb, Inc., 6.75%
                     notes, due 12/15/04 ..................              925,063

Paint and Related Products - 0.3%
     500,000       Sherwin-Williams Co., 6.85%
                     notes, due 2/1/07 ....................              505,000

Paper and Related Products - 0.1%
     250,000       Temple-Inland, Inc., 6.75%
                     notes, due 3/1/09 ....................              236,875

Physical Therapy and Rehabilitation Centers - 1.2%
                   HEALTHSOUTH Corp.:
   1,500,000         9.50%, senior subordinated notes
                     due 4/1/01 ...........................            1,539,375
     500,000         7.00%, senior notes, due 6/15/08 .....              468,125

                                                                       2,007,500

Property and Casualty Insurance - 0.2%
     350,000       Orion Capital Corp., 7.25%
                     senior notes, due 7/15/05 ............              346,938
Protection - Safety - 0.4%
     750,000       Protection One Alarm Monitoring, Inc., 7.375%
                     company guaranteed notes, due 8/15/05               712,500
Radio - 0.3%
     440,000       Chancellor Media Corp., 9.00%
                     company guaranteed notes, due 10/1/08               448,800
Recreational Centers - 2.0%
   1,500,000       Bally Total Fitness Holding Corp., 9.875%
                     senior subordinated notes, due 10/15/07           1,451,250
   1,750,000       Sports Club Company, Inc., 11.375%
                     company guaranteed notes, due 3/15/06             1,732,500

                                                                       3,183,750
Retail - Discount - 0.5%
     780,000       Ames Department Stores, Inc., 10.00%
                     senior notes, due 4/15/06+ ...........              762,450

Retail - Diversified - 0.1%
     450,000       SpinCycle, Inc., zero coupon
                     senior discount notes, due 5/1/05 ....              188,437

Retail - Leisure Products - 0.1%
     150,000       Selmer Co., Inc., 11.00%
                     senior subordinated notes, due 5/15/05              159,563

Retail - Restaurants - 1.6%
   1,500,000       McDonald's Corp., 6.375%
                     debentures, due 1/8/28 ...............            1,383,750
     500,000       Perkins Family Restaurant L.P., 10.125%
                     senior notes, due 12/15/07 ...........              526,250
     250,000       Romacorp, Inc., 12.00%
                     company guaranteed notes, due 7/1/06 .              243,438
     500,000       Tricon Global Restaurants, Inc., 7.65%
                     senior notes, due 5/15/08 ............              499,375

                                                                       2,652,813

Savings/Loan/Thrifts - 1.6%
   1,650,000       Dime Bancorp, Inc., 6.375%
                     senior notes, due 1/30/01 ............            1,639,688
   1,000,000       Golden State Holdings, Inc., 7.00%
                     senior notes, due 8/1/03 .............              975,000

                                                                       2,614,688

Telecommunication Services - 5.9%
$    500,000       Bellsouth Telecommunication, Inc., 6.375%
                     debentures, due 6/1/28 ...............     $        443,750
     775,000       CapRock Communications Corp., 11.50%
                     senior notes, due 5/1/09+ ............              784,687
     960,000       Energis PLC, 9.75%
                     senior unsubordinated notes, due 6/15/09+           967,200
     500,000       Galaxy Telecom L.P., 12.375%
                     senior subordinated notes, due 10/1/05              553,125
     750,000       Hyperion Telecommunications, Inc., 12.00%
                     senior subordinated notes, due 11/1/07+             759,375
     875,000       Level 3 Communications, Inc., 9.125%
                     senior notes, due 5/1/08 .............              861,875
   1,250,000       Logix Communication Enterprises, Inc., 12.25%
                     senior notes, due 6/15/08 ............            1,173,438
                   McLeodUSA, Inc.:
     600,000         9.25%, senior notes, due 7/15/07 .....              601,500
     500,000         8.125%, senior notes, due 2/15/09+ ...              468,750
     720,000       NTL, Inc., zero coupon
                     senior notes, due 4/15/05 ............              691,200
     200,000       Pac-West Telecomm, Inc., 13.50%
                     senior notes, due 2/1/09+ ............              198,000
     150,000       Pegasus Media and Communications, Inc.
                     12.50%, notes, due 7/1/05 ............              164,625
   1,000,000       RCN Corp., 10.00%
                     senior notes, due 10/15/07 ...........            1,007,500
     250,000       RSL Communications PLC, 10.50%
                     company guaranteed notes, due 11/15/08              246,250
     500,000       Versatel Telecom B.V., 13.25%
                     senior notes, due 5/15/08 ............              518,750

                                                                       9,440,025

Telephone - Integrated - 1.9%
     500,000       Esprit Telecom Group PLC, 11.50%
                     senior notes, due 12/15/07 ...........              527,500
   2,000,000       GTE Northwest, Inc., 5.55%
                     debentures, due 10/15/08 .............            1,820,000
     750,000       NEXTLINK Communications, Inc., 10.75%
                     senior notes, due 11/15/08 ...........              768,750

                                                                       3,116,250

Telephone - Long Distance - 1.9%
   1,500,000       LCI International, Inc., 7.25%
                     senior notes, due 6/15/07 ............            1,466,250
     500,000       MCI WorldCom, Inc., 6.40%
                     senior notes, due 8/15/05 ............              488,125
   1,000,000       Qwest Communications International, Inc.
                     7.50%, senior notes, due 11/1/08 .....              992,500

                                                                       2,946,875

Television - 0.6%
   1,000,000       Fox/Liberty Networks L.L.C., 8.875%
                     senior notes, due 8/15/07 ............            1,030,000

Textile Products - 0.6%
   1,000,000       Collins & Aikman Floorcovering, Inc., 10.00%
                     senior subordinated notes, due 1/15/07            1,007,500

Transportation - Services - 0.8%
   1,250,000       Railworks Corp., 11.50%
                     company guaranteed notes, due 4/15/09+            1,234,375

Wire and Cable Products - 0.3%
     500,000       Anixter International, Inc., 8.00%
                     company guaranteed notes, due 9/15/03               503,750

See Notes to Schedules of Investments.

                                          Janus Aspen Series / June 30, 1999  37
<PAGE>

Janus | Aspen Flexible Income Portfolio

SCHEDULE OF INVESTMENTS (unaudited)

Shares or Principal Amount                                        Market Value
- --------------------------------------------------------------------------------
Wireless Equipment - 0.6%
$  2,000,000       CAI Wireless Systems, Inc., zero coupon
                     senior notes, due 10/14/04 ...........     $        987,500
- --------------------------------------------------------------------------------
Total Corporate Bonds (cost $124,277,186) .................          121,257,577
- --------------------------------------------------------------------------------
Foreign Bonds - 2.0%
Golf - 1.0%
GBP
   1,000,000       Clubhaus PLC, 12.875%
                     senior notes, due 6/1/09**,+ .........            1,552,656

Telephone - Integrated - 0.3%
DEM
   1,000,000       Esprit Telecom Group PLC, 11.50%
                     senior notes, due 12/15/07 ...........              570,782

Telephone - Long Distance - 0.7%
EUR
   1,000,000       Viatel, Inc., 11.50%
                     senior notes, due 3/15/09**,+ ........            1,082,836
- --------------------------------------------------------------------------------
Total Foreign Bonds (cost $3,284,005) .....................            3,206,274
- --------------------------------------------------------------------------------
Preferred Stocks - 1.2%
Networking Products - 0.5%
         908       Concentric Network Corp.
                     - Series B, 13.50% ...................              871,680

Savings/Loan/Thrifts - 0.7%
      35,600       Chevy Chase Savings Bank, 13.00% .......            1,068,000
- --------------------------------------------------------------------------------
Total Preferred Stocks (cost $1,868,898) ..................            1,939,680
- --------------------------------------------------------------------------------
Warrants - 0%
Music/Clubs - 0%
         880       V2 Music Holdings PLC - expires 4/15/08*,+                  0
Retail - Diversified - 0%
         450       SpinCycle, Inc.- expires 5/1/05* .......                    0
Telecommunication Services - 0%
         225       Versatel Telecom B.V. - expires 5/15/08*,+             11,250
- --------------------------------------------------------------------------------
Total Warrants (cost $0) ..................................               11,250
- --------------------------------------------------------------------------------
U.S. Government Obligations - 11.1%
                   U.S. Treasury Notes:
  10,000,000         6.125%, due 8/15/07 ..................           10,104,300
   8,000,000         5.625%, due 5/15/08** ................            7,833,200
- --------------------------------------------------------------------------------
Total U.S. Government Obligations (cost $18,787,723) ......           17,937,500
- --------------------------------------------------------------------------------
Repurchase Agreement - 13.4%
  21,000,000       Deutsche Bank Securities, Inc., 6.05%,
                     dated 6/30/99, maturing 7/1/99, to be
                     repurchased at $21,003,529
                     collateralized by $169,700 in Access
                     Financial Mortgage Loan Trust,
                     7.275%, 6/18/27; $254,550 in Amresco
                     Residential Securities Mortgage Loan
                     Trust, 5.1225%, 1/25/28; $3,685,974
                     in Asset Securitization Corp.,
                     1.2339%-7.10%, 8/13/27-4/14/27;
                     $1,170,540 in Bear Stearns Secured
                     Investors Trust, 0%, 3/1/19-12/1/18;
                     $131,212 in Chase Mortgage Finance
                     Corp., 6.50%, 2/25/29; $93,335 in
                     Collateralized Mortgage Securities
                     Corp., 0%-10.08%, 7/20/22-12/27/16;
                     $2,074,051 in Collateralized Mortgage
                     Obligation Trust, 0%, 6/1/15-10/1/18;
                     $4,036,726 in Commercial Mortgage
                     Acceptance Corp., 0.9587%, 12/15/30;

Repurchase Agreement - (continued)
                     $1,618,003 in Countrywide Home Loans,
                     0.35%-14.888%, 11/1/27-12/25/27;
                     $1,567,010 in Deutsche Mortgage and
                     Asset Receiving Corp., 1.2441%,
                     6/15/31; $784,676 in Drexel Burnham
                     Lambert CMO Trust, 0%,
                     12/1/18-1/1/19; $53,370,119 in Fannie
                     Mae/Fannie Mae Strip, 0%-11.648%,
                     8/25/15-12/25/28; $161,215 in FFCA
                     Secured Lending Corp., 5.23%-6.29%,
                     10/18/25; $2,356,247 in Federal Home
                     Loan Mortgage Corp./Ginnie Mae, 0%,
                     4/25/23-2/25/24; $2,078,825 in First
                     Boston Mortgage Securities Corp.,
                     8.985%-10.965%, 4/25/17-5/25/17;
                     $2,305,205 in First Union-Lehman
                     Brothers-Bank of America, 0.8046%-
                     6.56%, 11/18/03-5/18/28; $1,997,369
                     in First Union-Lehman
                     Brothers-Commercial Mortgage Corp.,
                     1.5339%, 11/18/27; $4,034,465 in
                     Freddie Mac/ Freddie Mac Strip,
                     0%-12.563%, 8/15/23-6/15/28; $621,074
                     in GE Capital Mortgage Services,
                     Inc., 7.53%-9.8325%, 2/25/09-2/25/28;
                     $16,608,543 in GNAC Commercial
                     Mortgage Securities, Inc.,
                     0.4383%-6.411%, 11/15/07-5/15/35;
                     $338,789 in GNMA - Backed Trust,
                     0%-11.211%, 5/20/17-6/17/20; $593,950
                     in IMC Home Equity Loan Trust, 8.34%,
                     4/20/01; $424,250 in JP Morgan
                     Commercial Mortgage Finance Corp.,
                     1.5083%, 11/25/27; $42,425 in LB
                     Commercial Conduit Mortgage Trust,
                     5.87%-6.33%, 2/11/30-10/15/35;
                     $21,382 in Lehman Large Loan, 6.79%,
                     10/12/34; $11,692,720 in Merrill
                     Lynch Mortgage Investors, Inc.,
                     1.3151%-5.88%, 12/26/25-12/15/30;
                     $335,158 in Merrill Lynch Trust, 0%,
                     5/1/13; $5,089,388 in Morgan Stanley
                     Capital 1, 1.0595%- 6.25%,
                     3/15/30-7/15/32; $86,394 in Morgan
                     Stanley Mortgage Trust, 0%, 5/20/21;
                     $96,398 in Mortgage Capital Funding,
                     Inc., 6.325%, 6/18/30; $651,616 in
                     Nationlink Funding Corp., 0.9729%,
                     12/20/18; $339,400 in PNC Mortgage
                     Securities Corp., 6.49%, 10/25/26;
                     $585,635 in Residential Funding
                     Mortgage 1, 10.602%, 3/25/28;
                     $980,476 in RMF Commercial Mortgage
                     Pass-Through Certificates,
                     2.0731%-7.10%, 1/15/19-11/28/27;
                     $8,485 in Ryland Acceptance Corp.,
                     9.9248%, 4/20/21; $2,770 in
                     Structured Asset Securities Corp.,
                     11.628%, 11/20/21; $678,800 in Union
                     Acceptance Corp., 5.965%, 1/7/03;
                     $169,700 in WMC Mortgage Loan
                     Pass-Through Certificates, 5.1937%,
                     2/20/16; with respective values of
                     $172,161, $137,127, $540,231,
                     $764,373, $87,566, $18,978, $177,028,
                     $202,300, $31,679, $86,573, $116,386,

See Notes to Schedules of Investments.

38  Janus Aspen Series / June 30, 1999
<PAGE>

Shares or Principal Amount                                        Market Value
- --------------------------------------------------------------------------------
Repurchase Agreement - (continued)
                     $12,238,858, $122,942, $800,763,
                     $146,660, $268,265, $12,229,
                     $1,831,483, $554,891, $563,558,
                     $26,212, $80,415, $29,944, $38,430,
                     $20,686, $701,114, $20,761, $415,255,
                     $17,856, $89,103, $33,773, $111,193,
                     $505,567, $182,053, $5,439, $9,834,
                     $126,177 and $131,048 ................     $     21,000,000
$    510,000       Morgan Stanley & Co., Inc.
                     5.10%, dated 6/30/99, maturing
                     7/1/99, to be repurchased at $510,072
                     collateralized by $687,301 in Fannie
                     Mae, 5.50%-8.50%, 1/1/04-7/1/29 with
                     a value of $520,259 ..................              510,000
- --------------------------------------------------------------------------------
Total Repurchase Agreement (cost $21,510,000) .............           21,510,000
- --------------------------------------------------------------------------------
Total Investments (total cost $169,727,812) - 102.9% ......          165,862,281
- --------------------------------------------------------------------------------
Liabilities, net of Cash, Receivables and Other Assets - (2.9%)      (4,696,718)
- --------------------------------------------------------------------------------
Net Assets - 100% .........................................     $    161,165,563
- --------------------------------------------------------------------------------

- --------------------------------------------------------------------------------
Financial Futures - Short
150 Contracts      U.S. Treasury - 10 year bond, expires
                     September 1999, principal amount
                     $16,537,188 value $16,678,125,
                     cumulative depreciation ..............           ($140,937)
- --------------------------------------------------------------------------------

Summary of Investments by Country, June 30, 1999

Country              % of Investment Securities                     Market Value
- --------------------------------------------------------------------------------
Canada                                     0.3%                 $        479,375
Netherlands                                0.3%                          530,000
United Kingdom                             3.4%                        5,569,375
United States++                           96.0%                      159,283,531
- --------------------------------------------------------------------------------
Total                                    100.0%                 $    165,862,281

++Includes Short-Term Securities (83.1% excluding Short-Term Securities)

Forward Currency Contracts, Open at June 30, 1999

Currency Sold and                  Currency            Currency     Unrealized
Settlement Date                  Units Sold     Value in $ U.S.    Gain/(Loss)
- --------------------------------------------------------------------------------
British Pound 10/21/99              930,000         $ 1,468,284       $ 30,367
Euro 7/22/99                      1,500,000           1,548,750         72,876
- --------------------------------------------------------------------------------
Total                                               $ 3,017,034      $ 103,243

See Notes to Schedules of Investments.

                                          Janus Aspen Series / June 30, 1999  39
<PAGE>

Janus | Aspen High-Yield Portfolio

[PHOTO]
Sandy Rufenacht
portfolio manager

For the six  months  ended  June 30,  1999,  Janus  Aspen  High-Yield  Portfolio
returned 4.70% for its Institutional Shares and 4.42% for its Retirement Shares.
In comparison,  its benchmark, the Lehman Brothers High-Yield Bond Index, gained
2.20%.(1)

Early in the period,  stronger-than-expected  economic  growth in the U.S.,  low
inflation and budding  recoveries in several  emerging-market  economies  helped
fuel  the  stock  market.  As  such,  high-yield  bonds,  which  share  a  close
correlation with stocks,  performed solidly.  However,  in the second quarter, a
potentially  overheating  economy  caused  investor  sentiment to change.  Fears
surfaced that inflation could be on the rise, and investors began to suspect the
Federal Reserve Board might increase short-term interest rates. This uncertainty
created  volatility in the markets,  forcing high-yield bonds to give up much of
their gains from earlier in the year. Sure enough,  on June 30, suspicion became
reality when the Fed raised short-term rates a quarter-point.

Despite this less-than-favorable environment for high-yield bonds, the Portfolio
benefited  from our focus on businesses  with strong  U.S.-based  cash flows and
limited economic sensitivity. For example, cable companies continued to be solid
performers, offering a reliable stream of recurring, domestically based revenue.
Aiding  their  performance  was the  rapid  consolidation  taking  place in this
industry and the exciting possibilities of broadband technology.  Broadband will
enable  cable  companies  to  offer  subscribers   high-speed  Internet  access,
video-on-demand, and telephony over a single wire.

One of our favorite  holdings in this area was Galaxy,  a rural  Nebraska  cable
operator  with  dominant  market  share.  We believe  Galaxy is in a market that
offers  attractive  expansion  possibilities for several larger cable companies,
and could therefore be the target of a future acquisition. Another position that
gained during the period was Charter  Communications.  Already one of the top 10
cable  providers  in the U.S.,  Charter is poised  for  further  growth  through
strategic acquisitions. In fact, it recently announced plans to take over Rifkin
Acquisition Partners,  another cable position in the Portfolio.  Because Charter
is a higher-rated  bond, news of the buyout added  significantly to the value of
our Rifkin holdings.

Another  solid  performer  was Global  Crossing,  a leading  provider  of global
Internet and long-distance  telecommunications  services. These bonds were aided
by two separate acquisition  announcements during the period. The first involved
Global  Crossing's  intention  to buy  Frontier  Corporation,  which is a larger
telecom firm and a higher-rated  bond.  Soon after,  Global  Crossing  announced
plans to acquire regional Bell operating company US WEST, also a takeover target
of Qwest Communications. While it's unclear at the time of this writing who will
win the bidding war for US WEST,  the mere prospect of merging with this mature,
stable and well-capitalized company contributed to Global Crossing's gains.

The Portfolio also benefited from the performance of our casino positions. Among
the many reasons  we're  attracted  to these  companies is that they deploy free
cash flow to pay down debt and build their businesses. A leader in this area was
Venetian Casinos. This unique property is the first casino in Las Vegas to cater
to the business traveler,  with larger hotel rooms and better amenities than its
competitors. The Venetian also enjoys an ideal location, physically connected to
the Sands Expo Center,  a convention  facility that draws large weekday  crowds.
Isle of Capri  Blackhawk in Colorado was another casino holding that worked well
for us. These bonds continued to benefit from a growing local gaming market.

Despite   the   Portfolio's   solid   overall   performance,   there  were  some
disappointments.  Most notable was Foamex, the leading supplier of foam products
for  automotive  uses.  These bonds declined on  difficulties  related to recent
acquisitions.  Nonetheless,  it  appears  that  Foamex  is  in  the  midst  of a
turnaround,  and we maintained our position. Another holding that failed to meet
our  expectations  was  e.Spire,  a provider  of local phone  services.  e.Spire
recently  rebuilt its management team with individuals we believe are capable of
taking its business to a new level.  Because we see promise in this company,  we
opted to remain invested.

Going  forward,  the  combination  of inflation  fears in the U.S. and lingering
recession  risks in  developed  markets  abroad could  create  crosscurrents  or
volatility  in the  financial  markets.  As such,  we will maintain our focus on
companies   with  limited   sensitivity  to  interest  rate   fluctuations   and
international risks.

In closing,  I'd like to thank you for your continued  investment in Janus Aspen
High-Yield Fund.

Portfolio Profile                    June 30, 1999        December 31, 1998
- --------------------------------------------------------------------------------
Weighted Average Maturity                 7.1 Yrs.                 5.1 Yrs.
Average Modified Duration*                5.1 Yrs.                 3.7 Yrs.
30-Day Average Yield
  Institutional Shares**                     9.33%                    8.31%
    Without Reimbursement**                  6.08%                      N/A
  Retirement Shares**                        8.72%                    7.89%
    Without Reimbursement**                  5.50%                      N/A
Average Rating                                   B                        B
- --------------------------------------------------------------------------------
 * A theoretical measure of price volatility.
** Yields will fluctuate.

(1)  All returns include reinvested dividends.

Past performance does not guarantee future results.

40  Janus Aspen Series / June 30, 1999
<PAGE>

Average Annual Total Return(1)
For the Periods Ended June 30, 1999 (unaudited)
- --------------------------------------------------------------------------------
Institutional Shares (Inception Date 5/1/96)
  1 Year                                                    (0.68%)
  From Inception                                             10.77%
- --------------------------------------------------------------------------------
Lehman Brothers High-Yield Bond Index
  1 Year                                                    (0.38%)
  From Inception Date of Institutional Shares                 8.15%
- --------------------------------------------------------------------------------
Retirement Shares (Inception Date 5/1/97)
  1 Year                                                    (1.20%)
  From Portfolio Inception                                    6.59%
- --------------------------------------------------------------------------------
Returns shown for  Retirement  Shares for periods  prior to their  inception are
derived from the historical  performance of  Institutional  Shares,  adjusted to
reflect the higher operating expenses of Retirement Shares.

(1)  All returns reflect reinvested  dividends.  The Portfolio's  securities may
     differ significantly from the securities in the Index. Index returns do not
     include  taxes or  dividends  and interest  payments or operating  expenses
     necessary to maintain a portfolio  consisting of the same  securities  that
     are in the Index.  These returns do not reflect the charges and expenses of
     any particular  insurance product or qualified plan.  Investment return and
     principal value will fluctuate so that shares, when redeemed,  may be worth
     more or less than their  original cost.  The adviser  voluntarily  waives a
     portion of the Portfolio's  expenses.  Without such waiver, the Portfolio's
     total returns for each class would have been lower.  Past  performance does
     not guarantee future results.

SCHEDULE OF INVESTMENTS (unaudited)

Shares or Principal Amount                                        Market Value
- --------------------------------------------------------------------------------
Corporate Bonds - 96.7%
Agricultural Operations - 0.9%
$     23,000       Hines Horticulture, Inc., 11.75%
                     senior subordinated notes, due 10/15/05    $         24,495
Broadcast Services and Programs - 1.1%
      25,000       Digital Television Services L.L.C., 12.50%
                     company guaranteed notes, due 8/1/07 .               27,906
Building - Residential and Commercial - 3.0%
      25,000       D.R. Horton, Inc., 8.00%
                     company guaranteed notes, due 2/1/09 .               23,563
      15,000       Del Webb Corp., 10.25%
                     senior subordinated notes, due 2/15/10               15,075
      10,000       MDC Holdings, Inc., 8.375%
                     senior notes, due 2/1/08 .............                9,700
      30,000       Standard Pacific Corp., 8.50%
                     senior notes, due 4/1/09 .............               29,550

                                                                          77,888

Cable Television - 16.5%
                   Adelphia Communications Corp.:
$     35,000         9.875%, senior notes, due 3/1/07 .....     $         37,012
      45,000         7.875%, senior notes, due 5/1/09 .....               41,737
      75,000       Charter Communications Holdings L.L.C.
                     8.625%, senior notes, due 4/1/09+ ....               72,000
      75,000       Classic Cable, Inc., 9.875%
                     senior subordinated notes, due 8/1/08                78,187
      30,000       Falcon Holding Group L.P., 8.375%
                     debentures, due 4/15/10 ..............               29,625
      50,000       FrontierVision Holdings L.P., 11.00%
                     senior subordinated notes, due 10/15/06              55,000
      25,000       Fundy Cable, Ltd., 11.00%
                     senior notes, due 11/15/05 ...........               27,250
      30,000       Rifkin Acquisition Partners L.P., 11.125%
                     senior subordinated notes, due 1/15/06               33,787
                   TeleWest Communications PLC:
      30,000         zero coupon, debentures, due 10/1/07 .               26,737
      30,000         zero coupon, senior discount notes
                     due 4/15/09+ .........................               19,987

                                                                         421,322

See Notes to Schedules of Investments

                                          Janus Aspen Series / June 30, 1999  41
<PAGE>

Janus | Aspen High-Yield Portfolio

SCHEDULE OF INVESTMENTS (unaudited)

Shares or Principal Amount                                       Market Amount
- --------------------------------------------------------------------------------
Casino Hotels - 3.9%
$      9,000       Majestic Star Casino L.L.C., 10.875%
                     secured notes, due 7/1/06+ ...........     $          8,933
      30,000       Santa Fe Hotel, Inc., 11.00%
                     first mortgage notes, due 12/15/00 ...               30,000
      10,000       Station Casinos, Inc., 10.125%
                     senior subordinated notes, due 3/15/06               10,350
      50,000       Venetian Casino Resort L.L.C., 12.25%
                     company guaranteed notes, due 11/15/04               49,438

                                                                          98,721
Casino Services - 2.2%
      50,000       Isle of Capri Black Hawk L.L.C., 13.00%
                     first mortgage bonds, due 8/31/04 ....               55,250

Cellular Telecommunications - 1.1%
      29,000       Orange PLC, 8.00%
                     senior notes, due 8/1/08 .............               27,695

Computer Services - 3.5%
      50,000       Globix Corp., 13.00%
                     senior notes, due 5/1/05 .............               47,500
      45,000       Splitrock Services, Inc., 11.75%
                     company guaranteed notes, due 7/15/08                42,300

                                                                          89,800

Containers - Paper and Plastic - 3.4%
      55,000       Packaged Ice, Inc., 9.75%
                     company guaranteed notes, due 2/1/05 .               54,931
      21,000       Plastic Containers, Inc., 10.00%
                     senior notes, due 12/15/06 ...........               23,678
      20,000       SF Holdings Group, Inc., zero coupon
                     senior notes, due 3/15/08 ............                6,975

                                                                          85,584

Distribution and Wholesale - 2.4%
      20,000       Core-Mark International, Inc., 11.375%
                     senior subordinated notes, due 9/15/03               19,550
      40,000       Herff Jones, Inc., 11.00%
                     senior subordinated notes, due 8/15/05               42,900

                                                                          62,450

Diversified Financial Services - 1.2%
      30,000       Local Financial Corp., 11.00%
                     senior notes, due 9/8/04 .............               30,900

Electric - Integrated - 1.0%
      25,000       Niagara Mohawk Power Corp., 7.75%
                     senior notes, due 10/1/08 ............               25,719

Electronics - Military - 1.1%
      30,000       Condor Systems, Inc., 11.875%
                     company guaranteed notes, due 5/1/09+                28,950

Fiber Optics - 0.4%
      10,000       NorthEast Optic Network, Inc., 12.75%
                     senior notes, due 8/15/08 ............               10,325

Food - Retail - 2.5%
      15,000       Carrols Corp., 9.50%
                     senior subordinated notes, due 12/1/08               14,325
      45,000       Star Markets Co., Inc., 13.00%
                     senior subordinated notes, due 11/1/04               49,219

                                                                          63,544

Gambling - Non-Hotel Casinos - 3.4%
$     60,000       Lady Luck Gaming Corp., 11.875%
                     first mortgage notes, due 3/1/01 .....     $         60,750
      25,000       Louisiana Casino Cruises, Inc., 11.00%
                     secured notes, due 12/1/05+ ..........               25,125

                                                                          85,875

Home Decoration Products - 2.3%
      60,000       Frank's Nursery & Crafts, Inc., 10.25%
                     senior subordinated notes, due 3/1/08                59,775

Internet Software - 4.6%
      40,000       Exodus Communications, Inc., 11.25%
                     senior notes, due 7/1/08 .............               41,600
      15,000       PSINet, Inc., 10.00%
                     senior notes, due 2/15/08 ............               15,000
      20,000       Rhythms NetConnections, Inc., 12.75%
                     senior notes, due 4/15/09+ ...........               18,800
      40,000       Verio, Inc., 11.25%
                     senior notes, due 12/1/08 ............               41,900

                                                                         117,300

Leisure, Recreation and Gaming - 1.5%
      40,000       Hard Rock Hotel, Inc., 9.25%
                     senior subordinated notes, due 4/1/05                37,900

Machinery - General Industrial - 1.6%
      40,000       Fairfield Manufacturing Co., Inc., 11.375%
                     senior subordinated notes, due 7/1/01                40,850

Manufacturing - 2.9%
      80,000       Foamex L.P., 13.50%
                     company guaranteed notes, due 8/15/05                74,200

Medical Products - 0.4%
      12,000       Universal Hospital Service, Inc., 10.25%
                     senior notes, due 3/1/08 .............               10,650

Music/Clubs - 1.5%
      25,000       SFX Entertainment, Inc., 9.125%
                     company guaranteed notes, due 2/1/08 .               24,438
      40,000       V2 Music Holdings PLC, zero coupon
                     senior discount notes, due 4/15/08+ ..               13,900

                                                                          38,338
Networking Products - 1.8%
      45,000       Concentric Network Corp., 12.75%
                     senior notes, due 12/15/07 ...........               46,463

Publishing - Periodicals - 1.3%
      35,000       Transwestern Publishing Co./TWP
                     Capital Corp. II, 9.625%
                     company guaranteed notes, due 11/15/07               34,300

Radio - 1.7%
      39,000       SFX Broadcasting, Inc., 10.75%
                     senior subordinated notes, due 5/15/06               42,949

Real Estate Investment and Management - 1.6%
      40,000       LNR Property Corp., 10.50%
                     senior subordinated notes, due 1/15/09               39,900

Reinsurance - 0.4%
      10,000       Veritas Holdings GmbH, 9.625%
                     senior notes, due 12/15/03 ...........                9,900

Retail - Discount - 1.0%
      25,000       Pamida,Inc., 11.75%
                     senior subordinated notes, due 3/15/03               25,906

See Notes to Schedules of Investments.

42  Janus Aspen Series / June 30, 1999
<PAGE>

Shares or Principal Amount                                        Market Value
- --------------------------------------------------------------------------------
Satellite Telecommunications - 0.5%
$     15,000       ICG Holdings, Inc., zero coupon
                     company guaranteed notes, due 5/1/06 .     $         11,981

Special Purpose Acquisition Company - 0.6%
      15,000       P&L Coal Holdings Corp., 9.625%
                     company guaranteed notes, due 5/15/08                15,113

Steel Pipe and Tube - 0.2%
      30,000       Steel Heddle Group, Inc., zero coupon
                     debentures, due 6/1/09 ...............                4,725

Telecommunication Equipment - 0.6%
      15,000       Covad Communications Group, Inc., 12.50%
                     senior notes, due 2/15/09 ............               14,438

Telecommunication Services - 19.0%
      30,000       Alaska Communications Systems Holdings,
                     Inc., 9.375%, senior subordinated notes
                     due 5/15/09+ .........................               29,325
                   Allegiance Telecom, Inc.:
      10,000         zero coupon, senior discount notes
                     due 2/15/08 ..........................                6,100
       5,000         12.875%, senior notes, due 5/15/08 ...                5,337
      35,000       CapRock Communications Corp., 11.50%
                     senior notes, due 5/1/09+ ............               35,438
      25,000       Galaxy Telecom L.P., 12.375%
                     senior subordinated notes, due 10/1/05               27,656
      50,000       Global Crossing Holding, Ltd., 9.625%
                     company guaranteed notes, due 5/15/08                53,125
      20,000       ITC DeltaCom, Inc., 11.00%
                     senior notes, due 6/1/07 .............               21,400
      75,000       Level 3 Communications, Inc., 9.125%
                     senior notes, due 5/1/08 .............               73,875
      60,000       McLeodUSA, Inc., 9.25%
                     senior notes, due 7/15/07 ............               60,150
                   NTL, Inc.:
      60,000         zero coupon, senior notes, due 4/15/05               57,600
      30,000         10.00%, senior notes, due 2/15/07 ....               31,050
      25,000       Pac-West Telecomm, Inc., 13.50%
                     senior notes, due 2/1/09+ ............               24,750
      25,000       RSL Communications PLC, 10.50%
                     company guaranteed notes, due 11/15/08               24,625
      47,000       Telegroup, Inc., zero coupon
                     senior discount notes, due 11/1/04+ ..               19,799
      15,000       Versatel Telecom B.V., 13.25%
                     senior notes, due 5/15/08 ............               15,562

                                                                         485,792

Telephone - Local - 1.2%
      50,000       e.Spire Communications, Inc., zero coupon
                     senior discount notes, due 4/1/06 ....               31,375
Television - 1.4%
      15,000       Central European Media Enterprises, Ltd.
                     9.375%, senior notes, due 8/15/04 ....               12,863
      20,000       Price Communications Wireless, Inc., 11.75%
                     senior subordinated notes, due 7/15/07               22,200

                                                                          35,063

Textile - Products - 0.7%
      20,000       Glenoit Corp., 11.00%
                     company guaranteed notes, due 4/15/07                17,550

Transportation - Services - 1.2%
$     30,000       Atlantic Express Transportation Corp., 10.75%
                     company guaranteed notes, due 2/1/04 .     $         29,925

Wire and Cable Products - 0.8%
      20,000       International Wire Group, Inc., 11.75%
                     senior subordinated notes, due 6/1/05                20,800

Wireless Equipment - 0.3%
      15,000       McCaw International, Ltd., zero coupon
                     senior discount notes, due 4/15/07 ...                9,056
- --------------------------------------------------------------------------------
Total Corporate Bonds (cost $2,585,755) ...................            2,470,673
- --------------------------------------------------------------------------------
Foreign Bond - 1.8%
GBP
      50,000       NTL, Inc., zero coupon
                     senior notes, due 4/15/09 (cost $50,545)             46,796
- --------------------------------------------------------------------------------
Warrants - 0.2%
Computer Services - 0.2%
          38       Bell Technology Group, Ltd. - expires 5/1/05*           5,985

Music/Clubs - 0%
          40       V2 Music Holdings PLC - expires 4/15/08*,+                  0

Telecommunication Services - 0%
          10       Splitrock Services, Inc. - expires 7/15/08*               700
- --------------------------------------------------------------------------------
Total Warrants (cost $500) ................................                6,685
- --------------------------------------------------------------------------------
U.S. Government Obligations - 0.8%
                   U.S.Treasury Notes:
$     10,000         4.75%, due 11/15/08 ..................                9,174
      10,000         5.50%, due 5/15/09 ...................                9,785
- --------------------------------------------------------------------------------
Total U.S. Government Obligations (cost $19,437) ..........               18,959
- --------------------------------------------------------------------------------
Total Investments (cost $2,656,237) - 99.5% ...............            2,543,113
- --------------------------------------------------------------------------------
Cash, Receivables and Other Assets, net of Liabilities - 0.5%             11,239
- --------------------------------------------------------------------------------
Net Assets - 100% .........................................     $      2,554,352
- --------------------------------------------------------------------------------

See Notes to Schedules of Investments.

                                          Janus Aspen Series / June 30, 1999  43
<PAGE>

Janus | Aspen Money Market Portfolio

[PHOTO]
Sharon Pichler
portfolio manager

For the six months  ended June 30,  1999,  Janus  Aspen Money  Market  Portfolio
returned  2.25%  for its  Institutional  Shares  and  2.01%  for its  Retirement
Shares.(1) The seven-day  current yield for this same period was 4.68% and 4.14%
for the Institutional and Retirement Shares, respectively.

As 1999 began,  the crisis  mentality  that  prevailed  late in 1998 had largely
dissipated.  However,  financial  turmoil in several  emerging market  economies
lingered, as did expectations of an economic slowdown in the U.S. and additional
cuts in short-term interest rates.  Contrary to these expectations,  the economy
continued to grow  rapidly,  prompting  the Federal  Reserve Board to eventually
raise  short-term  rates  0.25%  on June  30 in a  preemptive  move to  mitigate
potential inflationary effects.

The  Portfolio's  flexible  investment  strategy  enabled  us to respond to this
changing environment by adjusting the average weighted maturity of our holdings.
The  majority  of  our  investments  at the  beginning  of the  period  were  in
securities at the shortest end of our maturity range,  which are influenced more
by changes in the federal funds rate than by broader market forces. However, our
feeling  toward  the end of the period was that  inflationary  expectations  had
already  forced  longer-term  rates as high as they  needed to be to  anticipate
future rate increases.  Therefore,  we believed longer-dated securities were the
better value and extended the average maturity of the Portfolio.

As we approach the new  millennium,  liquidity will remain key to our investment
strategy.  We are confident that financial systems around the world are prepared
for January 1, 2000, and that disruptions will be minimal.  At the same time, by
investing  in more  liquid  securities,  the  Portfolio  should  be able to take
advantage of any potential interest-rate opportunities sparked by Y2K concerns.

Because  the  strength  in the  financial  markets is a concern  of the  Federal
Reserve  Board,  we believe  there is a strong  possibility  it may raise  rates
further in the second half of the year.  However,  as I mentioned  earlier,  the
Portfolio is  positioned  to react to changes in the economic  environment  and,
therefore, we believe it will perform solidly going forward.

Thank you for your continued investment in Janus Aspen Money Market Portfolio.

Average Annual Total Return(1)
For the Periods Ended June 30, 1999 (unaudited)
- --------------------------------------------------------------------------------
Institutional Shares (Inception Date 5/1/95)
  1 Year                                                      4.97%
  From Inception                                              5.16%
- --------------------------------------------------------------------------------
Retirement Shares (Inception Date 5/1/97)
  1 Year                                                      4.47%
  From Portfolio Inception                                    4.32%
- --------------------------------------------------------------------------------
Returns shown for  Retirement  Shares for periods  prior to their  inception are
derived from the historical  performance of  Institutional  Shares,  adjusted to
reflect the higher operating expenses of Retirement Shares.

An  investment in the  Portfolio(s)  is not insured or guaranteed by the Federal
Deposit  Insurance  Corporation  or any other  government  agency.  Although the
Portfolio(s)  seeks to preserve the value of your investment at $1.00 per share,
it is possible to lose money by investing in the Portfolios.

(1)  All returns reflect reinvested dividends.

Past performance does not guarantee future results.

SCHEDULE OF INVESTMENTS (unaudited)

Shares or Principal Amount                                        Market Value
- --------------------------------------------------------------------------------
Short-Term Corporate Notes - 7.5%
$  2,000,000       Banque Nationale de Paris
                     4.97%, 10/8/99 .......................     $      1,969,904

   2,000,000       BT Alex Brown, Inc.
                     5.00%, 12/17/99 ......................            1,953,056
- --------------------------------------------------------------------------------
Total Short-Term Corporate Notes (amortized cost $3,922,960)           3,922,960
- --------------------------------------------------------------------------------
Taxable Variable Rate Demand  Notes - 31.9%
   1,975,000       Arapahoe County, Colorado Industrial
                     Development Revenue, (Cottrell)
                     Series B, 5.17%, 10/1/19 .............            1,975,000
   3,000,000       Asset Partners, Inc.
                     5.19%, 11/1/27 .......................            3,000,000
$  4,000,000       Breckenridge Terrace L.L.C.
                     5.1425%, 5/1/39 ......................     $      4,000,000
     750,000       Chicago, Illinois Industrial Development
                     Revenue, (BTI, Inc. Project)
                     Series B, 5.29%, 9/1/27 ..............              750,000
   1,600,000       Dallas, Texas 1997, (Telesis/Autumn
                     Leaves I, Ltd.), 5.14%, 11/1/04 ......            1,600,000
   2,140,000       Kentucky Economic Development
                     Financing Authority, Hospital Facilities
                     Revenue, (Highlands Regional Project)
                     Series B, 5.19%, 8/1/03 ..............            2,140,000
   1,605,000       Michigan State Strategic Fund Limited
                     Obligation Revenue, (Wade Trim Group),
                     5.15%, 12/1/16 .......................            1,605,000

44 Janus Aspen Series / June 30, 1999
<PAGE>

Shares or Principal Amount                                        Market Value
- --------------------------------------------------------------------------------
Taxable Variable Rate Demand Notes - (continued)
$  1,675,000       Phoenix, Illinois Realty Special Account
                     Multifamily Revenue, (Brightons Mark)
                     5.50%, 4/1/20 ........................     $      1,675,000
- --------------------------------------------------------------------------------
Total Taxable Variable Rate Demand Notes (cost $16,745,000)           16,745,000
- --------------------------------------------------------------------------------
Floating Rate Notes - 37.2%
   2,000,000       American Express Centurion
                     4.95%, 4/27/00 .......................            2,000,000
   2,000,000       Bankers Trust Company
                     4.95%, 5/15/00 .......................            1,999,306
   2,000,000       Bear Stearns Companies, Inc.
                     5.16%, 3/24/00 .......................            2,000,976
   2,000,000       CIT Group, Inc.
                     4.93%, 11/2/99 .......................            1,999,867
   2,000,000       Citicorp
                     5.2475%, 11/23/99 ....................            2,001,560
   2,000,000       Comerica Bank of Detroit
                     4.91%, 6/12/00 .......................            1,999,071
   2,000,000       General Motors Acceptance Mortgage Corp.
                     5.01%, 3/14/00 .......................            2,000,138
   1,500,000       Goldman Sachs Group L.P.
                     5.0675%, 1/26/00+ ....................            1,500,123
   2,000,000       Norwest Financial, Inc.
                     4.925%, 7/7/00 .......................            1,999,101
   2,000,000       SouthTrust Bank N.A.
                     4.89%, 5/17/00 .......................            1,998,968
- --------------------------------------------------------------------------------
Total Floating Rate Notes (cost $19,499,110) ..............           19,499,110
- --------------------------------------------------------------------------------
Certificates of Deposit - 11.4%
   2,000,000       Commerzbank A.G., New York
                     5.09%, 4/12/00 .......................            1,998,110
   2,000,000       National Bank of Canada, New York
                     5.61%, 6/12/00 .......................            1,999,271
   1,000,000       Royal Bank of Canada, New York
                     5.12%, 3/21/00 .......................              999,568
   1,000,000       Svenska Handelsbanken, New York
                     5.22%, 5/10/00 .......................              999,586
- --------------------------------------------------------------------------------
Total Certificates of Deposit (amortized cost $5,996,535) .            5,996,535
- --------------------------------------------------------------------------------
Put Bond - 5.3%
   2,765,000       Aurora, Colorado Centertech Metropolitan District,
                     Series B, 5.65%, 12/1/99 (cost $2,765,000)        2,765,000
- --------------------------------------------------------------------------------
Bank Note - 3.8%
  2,000,000        Morgan Guaranty Trust Co.
                     5.75%, 10/8/99 (cost $2,005,022) .....            2,005,022
- --------------------------------------------------------------------------------
Repurchase Agreement - 3.1%
   1,615,000       Deutsche Bank Securities, Inc., 6.05%,
                     dated 6/30/99, maturing 7/1/99, to be
                     repurchased at $169,628,502
                     collateral- ized by $13,100 in Access
                     Financial Mortgage Loan Trust,
                     7.275%, 6/18/27; $19,650 in Amresco
                     Residential Securities Mortgage Loan
                     Trust, 5.1225%, 1/25/28; $284,539 in
                     Asset Securitization Corp.,
                     1.2339%-7.10%, 8/13/27-8/14/27;
                     $90,360 in Bear Stearns Secured
                     Investors Trust, 0%, 12/1/18-3/1/19;
                     $10,129 in Chase Mortgage Finance
                     Corp., 6.50%, 2/25/29; $7,205 in
                     Collateralized Mortgage Securities
                     Corp., 0%-10.08%, 12/27/16-7/20/22;
                     $160,107 in Collateral- ized Mortgage
                     Obligation Trust,0%, 6/1/15-10/1/18;
                     $311,615 in Commercial Mortgage
                     Acceptance Corp.,0.9587%, 12/15/30;
                     $124,902 in Countrywide Home Loans,
                     0.35%-14.888%, 11/1/27-

Repurchase Agreement - (continued)
                     12/25/27; $120,965 in Deutsche
                     Mortgage and Asset Receiving
                     Corp.,1.2441%, 6/15/31; $60,573 in
                     Drexel Burnham Lambert CMO Trust, 0%,
                     12/1/18-1/1/19; $4,119,909 in Fannie
                     Mae/Fannie Mae Strip, 0%-11.648%,
                     8/25/15-12/25/28; $12,455 in FFCA
                     Secured Lending Corp., 5.23%-6.29%,
                     10/18/25; $181,891 in Federal Home
                     Loan Mortgage Corp./ Ginnie Mae, 0%,
                     4/25/23-2/25/24; $160,475 in First
                     Boston Mortgage Securities Corp.,
                     8.985%-10.965%, 4/25/17- 5/25/17;
                     $177,950 in First Union-Lehman
                     Brothers-Bank of America, 0.8046%-
                     6.56%, 11/18/03-5/18/28; $154,187 in
                     First Union-Lehman Brothers
                     Commercial Mortgage, Inc., 1.5339%,
                     11/18/27; $311,441 in Freddie
                     Mac/Freddie Mac Strip, 0%-12.563%,
                     8/15/23-6/15/28; $47,944 in GE
                     Capital Mortgage Services, Inc.,
                     7.53%-9.8325%, 2/25/09-2/25/28;
                     $1,282,097 in GNAC Commercial
                     Mortgage Securities, Inc.,
                     0.4383%-6.411%, 11/15/07-5/15/35;
                     $26,153 in GNMA Backed Trust,
                     0%-11.211%, 5/20/17- 6/17/20; $45,850
                     in IMC Home Equity Loan Trust, 8.34%,
                     4/20/01; $32,750 in JP Morgan
                     Commercial Mortgage Finance Corp.,
                     1.5083%, 11/25/27; $3,275 in LB
                     Commercial Conduit Mortgage Trust,
                     5.87%-6.33%, 2/11/30-10/15/35; $1,651
                     in Lehman Large Loan, 6.79%,
                     10/12/34; $902,620 in Merrill Lynch
                     Mortgage Investors, Inc.,
                     1.3151%-5.88%, 12/26/25-12/15/30;
                     $25,873 in Merrill Lynch Trust, 0%,
                     5/1/13; $392,876 in Morgan Stanley
                     Capital 1, 1.0595%- 6.25%,
                     3/15/30-7/15/32; $6,669 in Morgan
                     Stanley Mortgage Trust, 0%, 5/20/21;
                     $7,441 in Mortgage Capital Funding,
                     Inc., 6.325%, 6/18/30; $50,302 in
                     Nationlink Funding Corp., 0.9729%,
                     12/20/18; $26,200 in PNC Mortgage
                     Securities Corp., 6.49%, 10/25/26;
                     $45,208 in Residential Funding
                     Mortgage 1, 10.602%, 3/25/28; $75,688
                     in RMF Commercial Mortgage
                     Pass-Through Certificates,
                     2.0731%-7.10%, 1/15/19- 11/28/27;
                     $655 in Ryland Acceptance Corp.,
                     9.9248%, 4/20/21; $214 in Structured
                     Asset Securities Corp., 11.628%,
                     11/20/21; $52,400 in Union Acceptance
                     Corp., 5.965%, 1/7/03; $13,100 in WMC
                     Mortgage Loan Pass-Through
                     Certificates, 5.1937%, 2/20/16; with
                     respective values of $13,290,
                     $10,586, $41,703, $59,006, $6,760,
                     $1,465, $13,666, $15,617, $2,445,
                     $6,683, $8,984, $944,779, $9,491,
                     $61,815, $11,321, $20,709, $944,
                     $141,381, $42,835, $43,504, $2,023,
                     $6,208, $2,311, $2,967, $1,597,
                     $54,123, $1,603, $32,056, $1,378,
                     $6,878, $2,607, $8,584, $39,027,
                     $14,054, $420, $759, $9,740 and
                     $10,116 (cost $1,615,000) ............     $      1,615,000
- --------------------------------------------------------------------------------
Total Investments (total cost $52,548,627) - 100.2% .......           52,548,627
- --------------------------------------------------------------------------------
Liabilities, net of Cash, Receivables and Other Assets - (0.2%)        (130,103)
- --------------------------------------------------------------------------------
Net Assets - 100% .........................................          $52,418,524
- --------------------------------------------------------------------------------

See Notes to Schedules of Investments.

                                          Janus Aspen Series / June 30, 1999  45
<PAGE>

Statements of | Operations
<TABLE>
<CAPTION>
                                                                                      Janus Aspen   Janus Aspen
                                                                        Janus Aspen   Aggressive      Capital
For the six months ended June 30, 1999 (unaudited)                        Growth        Growth     Appreciation
(all numbers in thousands)                                               Portfolio     Portfolio     Portfolio
- ---------------------------------------------------------------------------------------------------------------
Investment Income:
<S>                                                                      <C>           <C>           <C>
  Interest                                                               $   4,333     $     591     $     889
  Dividends                                                                  2,221           484           186
  Foreign tax withheld                                                        (44)            --           (5)
- --------------------------------------------------------------------------------------------------------------
Total Investment Income                                                      6,510         1,075         1,070
- --------------------------------------------------------------------------------------------------------------
Expenses:
  Advisory fees                                                              4,502         3,532           505
  Transfer agent fees and expenses                                              --            --            --
  Registration fees                                                             62            57            29
  System fees                                                                    9             9             5
  Custodian fees                                                                61            54            12
  Insurance expense                                                              2             3            --
  Audit fees                                                                     5            19             7
  Distribution fees - Retirement Shares                                          1             2             1
  Administrative fees - Retirement Shares                                        1             2             1
  Other expenses                                                                 3             4             2
- --------------------------------------------------------------------------------------------------------------
Total Expenses                                                               4,646         3,682           562
Expense and Fee Offsets                                                        (8)          (11)           (1)
Net Expenses                                                                 4,638         3,671           561
Excess Expense Reimbursement                                                    --            --            --
Net Expenses After Reimbursement                                             4,638         3,671           561
Net Investment Income/(Loss)                                                 1,872       (2,596)           509
- --------------------------------------------------------------------------------------------------------------
Net Realized and Unrealized Gain/(Loss) on Investments:
  Net realized gain/(loss) from securities transactions                     85,486       130,438        11,768
  Net realized gain/(loss) from foreign currency transactions                 (10)           354            --
  Net realized gain/(loss) from futures contracts                               --            --            --
  Change in net unrealized appreciation/(depreciation) of investments      126,109       134,378        13,587
- --------------------------------------------------------------------------------------------------------------
Net Gain/(Loss) on Investments                                             211,585       265,170        25,355
Net Increase in Net Assets Resulting from Operations                     $ 213,457     $ 262,574     $  25,864
- --------------------------------------------------------------------------------------------------------------
</TABLE>

See Notes to Financial Statements.

46  Janus Aspen Series / June 30, 1999
<PAGE>

<TABLE>
<CAPTION>
  Janus Aspen   Janus Aspen                 Janus Aspen   Janus Aspen   Janus Aspen
 International   Worldwide    Janus Aspen     Equity      Growth and     Flexible     Janus Aspen   Janus Aspen
    Growth        Growth       Balanced       Income        Income        Income      High-Yield   Money Market
   Portfolio     Portfolio     Portfolio     Portfolio     Portfolio     Portfolio     Portfolio     Portfolio
- ---------------------------------------------------------------------------------------------------------------
<S>              <C>           <C>           <C>           <C>           <C>           <C>           <C>
   $     577     $   3,720     $  16,338     $      35     $      70     $   5,200     $     127     $   1,175
       2,057        16,831         3,749            51            29            66             1            --
       (262)       (2,002)           (9)            --            --            --            --            --
- --------------------------------------------------------------------------------------------------------------
       2,372        18,549        20,078            86            99         5,266           128         1,175
- --------------------------------------------------------------------------------------------------------------
       1,135        10,645         4,073            44            42           473            11            58
          --            --             1             1            --             1            --             1
          84           149            61            36            22            47            35            45
           8             9            10             1             4             6             6             9
         168           884            48            13            22            16            15             4
          --             3             2            --            --            --            --            --
           6            24            10             3             1             9             7            11
           1            25            26            --             1            --            --            --
           1            25            26            --             1            --            --            --
           6            41             3             2             1             1             3            --
- --------------------------------------------------------------------------------------------------------------
       1,409        11,805         4,260           100            94           553            77           128
         (2)           (5)          (13)            --            --           (3)            --            --
       1,407        11,800         4,247           100            94           550            77           128
          --            --            --          (24)          (12)            --          (62)          (16)
       1,407        11,800         4,247            76            82           550            15           112
         965         6,749        15,831            10            17         4,716           113         1,063
- --------------------------------------------------------------------------------------------------------------
       (743)        45,175        87,314         1,023           437          (52)            55             4
       1,048         8,435            --            --            --            14            --            --
         522         4,984            --            --            --           507            --            --
      32,723       332,348        27,493         1,138         1,702       (6,285)          (37)            --
- --------------------------------------------------------------------------------------------------------------
      33,550       390,942       114,807         2,161         2,139       (5,816)            18             4
   $  34,515     $ 397,691     $ 130,638     $   2,171     $   2,156     $ (1,100)     $     131     $   1,067
- --------------------------------------------------------------------------------------------------------------
</TABLE>

                                          Janus Aspen Series / June 30, 1999  47
<PAGE>

Statements of | Assets & Liabilities
<TABLE>
<CAPTION>
                                                                                     Janus Aspen   Janus Aspen
                                                                       Janus Aspen   Aggressive      Capital
As of June 30, 1999 (unaudited) (all numbers in thousands                Growth        Growth      Appreciation
except Retirement Shares outstanding and net asset value per share)     Portfolio     Portfolio     Portfolio
- ----------------------------------------------------------------------------------------------------------------
Assets:
<S>                                                                     <C>           <C>           <C>
  Investments at cost                                                   $1,329,381    $  990,324    $  221,649

  Investments at value:                                                 $1,776,820    $1,372,297    $  255,409
    Cash                                                                       223           111            10
    Receivables:
      Investments sold                                                       9,904        20,559            --
      Portfolio shares sold                                                  4,699         2,865         2,795
      Dividends                                                                279           114            13
      Interest                                                                   9             4             6
    Other assets                                                                 6             5            --
  Forward currency contracts                                                    --            --            --
- ----------------------------------------------------------------------------------------------------------------
Total Assets                                                             1,791,940     1,395,955       258,233
- ----------------------------------------------------------------------------------------------------------------
Liabilities:
  Payables:
    Investments purchased                                                   13,066        46,211            --
    Portfolio shares repurchased                                               111         1,638            --
    Advisory fees                                                              879           707           122
  Accrued expenses                                                              46            44            10
  Variation margin                                                              --            --            --
- ----------------------------------------------------------------------------------------------------------------
Total Liabilities                                                           14,102        48,600           132
Net Assets                                                              $1,777,838    $1,347,355    $  258,101
- ----------------------------------------------------------------------------------------------------------------
Net Assets - Institutional Shares                                       $1,775,338    $1,343,917    $  255,616
  Shares Outstanding, $0.001 Par Value (unlimited shares authorized)        65,059        38,827        10,221
- ----------------------------------------------------------------------------------------------------------------
  Net Asset Value Per Share                                             $    27.29    $    34.61    $    25.01
- ----------------------------------------------------------------------------------------------------------------
Net Assets - Retirement Shares                                          $    2,500    $    3,438    $    2,485
  Shares Outstanding, $0.001 Par Value (unlimited shares authorized)        91,539       100,396        99,802
- ----------------------------------------------------------------------------------------------------------------
  Net Asset Value Per Share                                             $    27.31    $    34.24    $    24.90
- ----------------------------------------------------------------------------------------------------------------
</TABLE>

See Notes to Financial Statements.

48  Janus Aspen Series / June 30, 1999
<PAGE>

<TABLE>
<CAPTION>
 Janus Aspen   Janus Aspen                 Janus Aspen   Janus Aspen   Janus Aspen
International   Worldwide    Janus Aspen      Equity     Growth and     Flexible     Janus Aspen   Janus Aspen
   Growth        Growth       Balanced        Income       Income        Income       High-Yield   Money Market
  Portfolio     Portfolio     Portfolio     Portfolio     Portfolio     Portfolio     Portfolio     Portfolio
- ----------------------------------------------------------------------------------------------------------------

<S>             <C>           <C>           <C>           <C>           <C>           <C>           <C>
  $  316,865    $2,674,787    $1,403,730    $   12,557    $   23,254    $  169,728    $    2,656    $   52,549

  $  401,131    $3,751,954    $1,625,707    $   16,072    $   25,960    $  165,862    $    2,543    $   52,549
         195           356            72             1             8            73            29             3

       5,517        36,216        12,213           258            62           104            --            --
       2,837         9,554         5,433            --            --           240            --            --
         922         6,168           857            11             5            --            --            --
           6            28        13,520            53            10         2,816            63           260
           1            14             4            --            --             1            --             1
       4,155        28,591           136            --            --           103            --            --
- ----------------------------------------------------------------------------------------------------------------
     414,764     3,832,881     1,657,942        16,395        26,045       169,199         2,635        52,813
- ----------------------------------------------------------------------------------------------------------------


       9,978        45,988        83,853           143           777         6,834            --            --
           6           344            52            19            17           959            29           358
         209         1,919           811            10            14            86            43            15
         102           239            42            18            14            18             9            21
          --            --            --            --            --           136            --            --
- ----------------------------------------------------------------------------------------------------------------
      10,295        48,490        84,758           190           822         8,033            81           394
  $  404,469    $3,784,391    $1,573,184    $   16,205    $   25,223    $  161,166    $    2,554    $   52,419
- ----------------------------------------------------------------------------------------------------------------
  $  402,260    $3,747,671    $1,547,411    $   16,175    $   23,827    $  160,952    $    2,542    $   52,408
      17,225       114,457        62,012           696         1,652        13,925           235        52,404
- ----------------------------------------------------------------------------------------------------------------
  $    23.35    $    32.74    $    24.95    $    23.23    $    14.42    $    11.56    $    10.84    $     1.00
- ----------------------------------------------------------------------------------------------------------------
  $    2,209    $   36,720    $   25,773    $       30    $    1,396    $      214    $       12    $       11
      94,657     1,123,102     1,029,445         1,319        97,159        18,282         1,077        11,023
- ----------------------------------------------------------------------------------------------------------------
  $    23.34    $    32.70    $    25.04    $    23.03    $    14.37    $    11.67    $    10.93    $     1.00
- ----------------------------------------------------------------------------------------------------------------
</TABLE>

                                          Janus Aspen Series / June 30, 1999  49
<PAGE>

Statements of | Changes in Net Assets
<TABLE>
<CAPTION>
                                                          Janus Aspen                Janus Aspen                Janus Aspen
For the six months ended June 30 (unaudited)                 Growth               Aggressive Growth         Capital Appreciation
and for the fiscal year ended December 31                   Portfolio                 Portfolio                   Portfolio
(all numbers in thousands)                             1999          1998         1999          1998          1999         1998
- ------------------------------------------------------------------------------------------------------------------------------------
Operations:
<S>                                                 <C>           <C>           <C>           <C>          <C>           <C>
  Net investment income/(loss)                      $    1,872    $    2,061    $  (2,596)    $  (2,059)   $      509    $       70
  Net realized gain/(loss) from
    investment transactions                             85,476         9,731       130,792        62,166        11,768       (3,801)
  Change in unrealized net appreciation or
    depreciation of investments                        126,109       246,903       134,378       133,925        13,587        19,907
- ------------------------------------------------------------------------------------------------------------------------------------
Net Increase in Net Assets
  Resulting from Operations                            213,457       258,695       262,574       194,032        25,864        16,176
- ------------------------------------------------------------------------------------------------------------------------------------
Dividends and Distributions to Shareholders:
  Net investment income*                               (1,932)       (1,969)            --            --         (507)          (40)
  Dividends (in excess of net investment income)*           --            --            --            --            --            --
  Net realized gain from investment transactions*      (9,036)      (48,597)      (52,162)            --            --            --
  Distributions (in excess of realized gains)               --            --            --            --            --            --
- ------------------------------------------------------------------------------------------------------------------------------------
Net Decrease from Dividends and Distributions         (10,968)      (50,566)      (52,162)            --         (507)          (40)
- ------------------------------------------------------------------------------------------------------------------------------------
Capital Share Transactions:
  Shares sold
    Institutional Shares                               563,981       375,818       685,336       388,732       181,074        78,521
    Retirement Shares                                    2,546             2         3,479            --         3,298            --
  Reinvested dividends and distributions
    Institutional Shares                                10,955        50,565        52,029            --           507            40
    Retirement Shares                                       13             1           133            --            --            --
  Shares repurchased
    Institutional Shares                             (105,471)     (139,241)     (376,627)     (318,015)      (25,554)      (27,336)
    Retirement Shares                                    (242)            --         (367)            --         (788)            --
- ------------------------------------------------------------------------------------------------------------------------------------
Net Increase/(Decrease) from
  Capital Share Transactions                           471,782       287,145       363,983        70,717       158,537        51,225
- ------------------------------------------------------------------------------------------------------------------------------------
Net Increase/(Decrease) in Net Assets                  674,271       495,274       574,395       264,749       183,894        67,361
Net Assets:
  Beginning of period                                1,103,567       608,293       772,960       508,211        74,207         6,846
- ------------------------------------------------------------------------------------------------------------------------------------
  End of period                                     $1,777,838    $1,103,567    $1,347,355    $  772,960    $  258,101    $   74,207
- ------------------------------------------------------------------------------------------------------------------------------------
Net Assets Consist of:
  Capital (par value and paid-in surplus)*          $1,244,784    $  773,002    $  839,237    $  475,254    $  216,485    $   57,948
  Undistributed net investment income/(loss)*              150           210       (2,602)           (6)            36            34
  Undistributed net realized
    gain/(loss) from investments*                       85,468         9,028       128,749        50,119         7,821       (3,947)
  Unrealized appreciation/(depreciation) of
    investments and foreign currency                   447,436       321,327       381,971       247,593        33,759        20,172
                                                    $1,777,838    $1,103,567    $1,347,355    $  772,960    $  258,101    $   74,207
Transactions in Portfolio Shares -
  Institutional Shares
  Shares sold                                           21,970        18,605        21,304        17,430         7,615         4,982
  Reinvested dividends and distributions                   408         2,441         1,555            --            21             2
- ------------------------------------------------------------------------------------------------------------------------------------
Total                                                   22,378        21,046        22,859        17,430         7,636         4,984
- ------------------------------------------------------------------------------------------------------------------------------------
Shares Repurchased                                     (4,204)       (7,082)      (11,996)      (14,193)       (1,135)       (1,805)
Net Increase/(Decrease) in Portfolio Shares             18,174        13,964        10,863         3,237         6,501         3,179
Shares Outstanding Beginning of Period                  46,885        32,921        27,964        24,727         3,720           541
- ------------------------------------------------------------------------------------------------------------------------------------
Shares Outstanding End of Period                        65,059        46,885        38,827        27,964        10,221         3,720
- ------------------------------------------------------------------------------------------------------------------------------------
Transactions in Portfolio Shares -
  Retirement Shares(2)
  Shares sold                                           99,917            79       106,625            --       129,610            --
  Reinvested dividends and distributions                   475            40         4,022            --            --            --
- ------------------------------------------------------------------------------------------------------------------------------------
Total                                                  100,392           119       110,647            --       129,610            --
- ------------------------------------------------------------------------------------------------------------------------------------
Shares Repurchased                                     (9,607)            --      (10,871)            --      (30,808)            --
Net Increase/(Decrease) in Portfolio Shares             90,785           119        99,776            --        98,802            --
Shares Outstanding Beginning of Period                     754           635           620           620         1,000         1,000
- ------------------------------------------------------------------------------------------------------------------------------------
Shares Outstanding End of Period                        91,539           754       100,396           620        99,802         1,000
- ------------------------------------------------------------------------------------------------------------------------------------
Purchases and Sales of Investment Securities:
  (excluding short-term securities)
  Purchases of securities                           $  673,277    $  747,926    $  950,033    $  795,996    $  127,178    $   65,706
  Proceeds from sales of securities                    397,681       531,213       612,067       747,773        43,371        20,828
  Purchases of long-term
    U.S. government obligations                             --            --            --            --            --            --
  Proceeds from sales of long-term
    U.S. government obligations                             --            --            --            --            --            --
</TABLE>

(1)  Period May 1, 1998 (inception) to December 31, 1998.
(2)  Transactions  in Portfolio  Shares - Retirement  Shares  numbers are not in
     thousands.
*See Note 3 in Notes to Financial Statements.

See Notes to Financial Statements.

50  Janus Aspen Series / June 30, 1999
<PAGE>

<TABLE>
<CAPTION>
     Janus Aspen             Janus Aspen              Janus Aspen           Janus Aspen          Janus Aspen        Janus Aspen
 International Growth     Worldwide Growth              Balanced           Equity Income      Growth and Income    Flexible Income
      Portfolio               Portfolio                Portfolio             Portfolio            Portfolio           Portfolio
  1999        1998        1999         1998         1999        1998       1999      1998       1999    1998(1)     1999      1998
- ------------------------------------------------------------------------------------------------------------------------------------
<S>        <C>         <C>          <C>          <C>          <C>        <C>       <C>       <C>        <C>       <C>       <C>
$    965   $   1,703   $    6,749   $   14,085   $   15,831   $ 13,428   $    10   $    10   $     17   $    13   $  4,716  $  5,513

     827    (14,669)       58,594     (60,752)       87,314      (989)     1,023        65        437     (119)        469       964

  32,723      43,585      332,348      569,104       27,493    174,276     1,138     2,297      1,702     1,005    (6,285)       680

- ------------------------------------------------------------------------------------------------------------------------------------
  34,515      30,619      397,691      522,437      130,638    186,715     2,171     2,372      2,156       899    (1,100)     7,157
- ------------------------------------------------------------------------------------------------------------------------------------

 (1,019)     (1,573)      (6,818)     (15,228)     (16,092)   (13,267)      (10)       (9)       (16)      (11)    (4,711)   (5,587)
      --          --           --           --           --         --        --        --         --        --         --        --
      --          --           --           --           --   (12,240)      (59)      (74)         --        --      (977)     (704)
      --     (3,097)           --     (69,710)           --      (987)        --        --         --        --         --        --
- ------------------------------------------------------------------------------------------------------------------------------------
 (1,019)     (4,670)      (6,818)     (84,938)     (16,092)   (26,494)      (69)      (83)       (16)      (11)    (5,688)   (6,291)
- ------------------------------------------------------------------------------------------------------------------------------------


 146,996     265,075      793,648    1,208,930      563,177    390,880     5,894     6,139     16,719     6,714     49,720    84,767
   2,194           4       30,322        5,082        8,936     15,037         7        --      2,051        10        207        --

   1,018       4,670        6,818       84,904       15,871     26,417        69        83         16        11      5,683     6,290
       1          --           --           34          222         77        --        --         --        --          5         1

(90,280)   (145,673)    (331,717)    (417,023)     (26,626)   (54,219)     (904)   (2,534)    (1,433)   (1,198)   (17,255)  (16,439)
    (83)          --      (1,765)        (165)      (2,699)    (1,077)        --        --      (695)        --         --        --

- ------------------------------------------------------------------------------------------------------------------------------------
  59,846     124,076      497,306      881,762      558,881    377,115     5,066     3,688     16,658     5,537     38,360    74,619
- ------------------------------------------------------------------------------------------------------------------------------------
  93,342     150,025      888,179    1,319,261      673,427    537,336     7,168     5,977     18,798     6,425     31,572    75,485

 311,127     161,102    2,896,212    1,576,951      899,757    362,421     9,037     3,060      6,425        --    129,594    54,109
- ------------------------------------------------------------------------------------------------------------------------------------
$404,469   $ 311,127   $3,784,391   $2,896,212   $1,573,184   $899,757   $16,205   $ 9,037   $ 25,223   $ 6,425   $161,166  $129,594
- ------------------------------------------------------------------------------------------------------------------------------------

$333,068   $ 273,222   $2,706,645   $2,209,339   $1,264,717   $705,836   $11,662   $ 6,596   $ 22,195   $ 5,537   $164,509  $126,149
      60         114          330          400          266        527         5         5          3         2        174       169

(17,059)    (17,886)     (28,195)     (86,790)       86,092    (1,222)     1,023        59        318     (119)        389       897

  88,400      55,677    1,105,611      773,263      222,109    194,616     3,515     2,377      2,707     1,005    (3,906)     2,379
$404,469   $ 311,127   $3,784,391   $2,896,212   $1,573,184   $899,757   $16,205   $ 9,037   $ 25,223   $ 6,425   $161,166  $129,594


   6,642      12,915       25,612       44,980       23,247     20,067       271       399      1,225       655      4,112     6,992
      44         212          209        2,966          647      1,279         3         5          1         1        493       525
- ------------------------------------------------------------------------------------------------------------------------------------
   6,686      13,127       25,821       47,946       23,894     21,346       274       404      1,226       656      4,605     7,517
- ------------------------------------------------------------------------------------------------------------------------------------
 (4,084)     (7,220)     (10,737)     (15,979)      (1,108)    (2,871)      (43)     (165)      (110)     (120)    (1,430)   (1,360)
   2,602       5,907       15,084       31,967       22,786     18,475       231       239      1,116       536      3,175     6,157
  14,623       8,716       99,373       67,406       39,226     20,751       465       226        536        --     10,750     4,593
- ------------------------------------------------------------------------------------------------------------------------------------
  17,225      14,623      114,457       99,373       62,012     39,226       696       465      1,652       536     13,925    10,750
- ------------------------------------------------------------------------------------------------------------------------------------


  97,531         201      979,131      188,749      367,635    815,403       301        --    145,436     1,000     16,905        --
      40           8           --        1,188        9,016      3,415         5        13         --        --        388        57
- ------------------------------------------------------------------------------------------------------------------------------------
  97,571         209      979,131      189,937      376,651    818,818       306        13    145,436     1,000     17,293        57
- ------------------------------------------------------------------------------------------------------------------------------------
 (3,722)          --     (56,895)      (6,322)    (111,349)   (55,344)        --        --   (49,277)        --         --        --
  93,849         209      922,236      183,615      265,302    763,474       306        13     96,159     1,000     17,293        57
     808         599      200,866       17,251      764,143        669     1,013     1,000      1,000        --        989       932
- ------------------------------------------------------------------------------------------------------------------------------------
  94,657         808    1,123,102      200,866    1,029,445    764,143     1,319     1,013     97,159     1,000     18,282       989
- ------------------------------------------------------------------------------------------------------------------------------------


$184,181   $ 295,506   $1,360,176   $2,082,135   $  893,249   $608,627   $ 9,167   $ 7,825   $ 15,322   $ 5,637   $107,075  $140,772
 128,224     194,200      836,125    1,556,004      372,092    284,350     4,694     4,252      3,027     1,126     62,576    93,382

      --          --           --           --       88,627     76,402        --        --         --        --      1,426    37,749

      --          --           --           --       45,970     87,965        --        --         --        --     12,437    19,499
</TABLE>

                                          Janus Aspen Series / June 30, 1999  51
<PAGE>

Statements of | Changes in Net Assets (continued)
<TABLE>
<CAPTION>

                                                            Janus Aspen                  Janus Aspen
For the six months ended June 30 (unaudited)                High-Yield                   Money Market
and for the fiscal year ended December 31                    Portfolio                     Portfolio
(all numbers in thousands)                              1999           1998           1999           1998
- ------------------------------------------------------------------------------------------------------------
Operations:
<S>                                                  <C>            <C>            <C>            <C>
  Net investment income/(loss)                       $      113     $      255     $    1,063     $    1,650
  Net realized gain/(loss) from
    investment transactions                                  55           (51)              4             --
  Change in unrealized net appreciation or
    depreciation of investments                            (37)          (141)             --             --
- ------------------------------------------------------------------------------------------------------------
Net Increase in Net Assets
  Resulting from Operations                                 131             63          1,067          1,650
- ------------------------------------------------------------------------------------------------------------
Dividends and Distributions to Shareholders:
  Net investment income*                                  (120)          (257)        (1,063)        (1,650)
  Dividends (in excess of net investment income)*            --             --             --             --
  Net realized gain from investment transactions*            --           (15)             --             --
  Distributions (in excess of realized gains)                --           (51)             --             --
- ------------------------------------------------------------------------------------------------------------
Net Decrease from Dividends and Distributions             (120)          (323)        (1,063)        (1,650)
- ------------------------------------------------------------------------------------------------------------
Capital Share Transactions:
  Shares sold
    Institutional Shares                                    934          4,244         56,254        132,432
    Retirement Shares                                        --             --             --             --
  Reinvested dividends and distributions
    Institutional Shares                                    120            322          1,063          1,650
    Retirement Shares                                        --              1             --             --
  Shares repurchased
    Institutional Shares                                (1,499)        (4,244)       (43,603)      (110,765)
    Retirement Shares                                        --             --             --             --
- ------------------------------------------------------------------------------------------------------------
Net Increase/(Decrease) from
  Capital Share Transactions                              (445)            323         13,714         23,317
- ------------------------------------------------------------------------------------------------------------
Net Increase/(Decrease) in Net Assets                     (434)             63         13,718         23,317
Net Assets:
  Beginning of period                                     2,988          2,925         38,701         15,384
- ------------------------------------------------------------------------------------------------------------
  End of period                                      $    2,554     $    2,988     $   52,419     $   38,701
- ------------------------------------------------------------------------------------------------------------
Net Assets Consist of:
  Capital (par value and paid-in surplus)*           $    2,662     $    3,106     $   52,415     $   38,701
  Undistributed net investment income/(loss)*                 1              8             --             --
  Undistributed net realized gain/(loss)
    from investments*                                         4           (50)              4             --
  Unrealized appreciation/(depreciation) of
    investments and foreign currency                      (113)           (76)             --             --
                                                     $    2,554     $    2,988     $   52,419     $   38,701
Transactions in Portfolio Shares -
  Institutional Shares
  Shares sold                                                83            356         56,254        132,432
  Reinvested dividends and distributions                     11             28          1,063          1,650
- ------------------------------------------------------------------------------------------------------------
Total                                                        94            384         57,317        134,082
- ------------------------------------------------------------------------------------------------------------
Shares Repurchased                                        (133)          (357)       (43,603)      (110,766)
Net Increase/(Decrease) in Portfolio Shares                (39)             27         13,714         23,316
Shares Outstanding Beginning of Period                      274            247         38,690         15,374
- ------------------------------------------------------------------------------------------------------------
Shares Outstanding End of Period                            235            274         52,404         38,690
- ------------------------------------------------------------------------------------------------------------
Transactions in Portfolio Shares -
  Retirement Shares(1)
  Shares sold                                                --             --             --             --
  Reinvested dividends and distributions                     38             89            221            496
- ------------------------------------------------------------------------------------------------------------
Total                                                        38             89            221            496
- ------------------------------------------------------------------------------------------------------------
Shares Repurchased                                           --             --             --             --
Net Increase/(Decrease) in Portfolio Shares                  38             89            221            496
Shares Outstanding Beginning of Period                    1,039            950         10,802         10,306
- ------------------------------------------------------------------------------------------------------------
Shares Outstanding End of Period                          1,077          1,039         11,023         10,802
- ------------------------------------------------------------------------------------------------------------
Purchases and Sales of Investment Securities:
  (excluding short-term securities)
  Purchases of securities                            $   10,650     $    8,323             --             --
  Proceeds from sales of securities                      10,320          9,612             --             --
  Purchases of long-term
    U.S. government obligations                              19            640             --             --
  Proceeds from sales of long-term
    U.S. government obligations                              98            536             --             --
</TABLE>

(1)  Transactions  in Portfolio  Shares - Retirement  Shares  numbers are not in
     thousands.
*See Note 3 in Notes to Financial Statements.

See Notes to Financial Statements.

52  Janus Aspen Series / June 30, 1999
<PAGE>

                                   Financial | Highlights - Institutional Shares

<TABLE>
<CAPTION>
For a share outstanding during the
six months ended June 30 (unaudited)                                         Janus Aspen Growth Portfolio
or through each fiscal year ended December 31        1999          1998          1997          1996          1995          1994
- ----------------------------------------------------------------------------------------------------------------------------------
<S>                                               <C>           <C>           <C>           <C>           <C>           <C>
Net Asset Value, Beginning of Period              $    23.54    $    18.48    $    15.51    $    13.45    $    10.57    $    10.32
- ----------------------------------------------------------------------------------------------------------------------------------
Income from Investment Operations:
  Net investment income/(loss)                           .03           .05           .15           .17           .28           .09
  Net gains/(losses) on securities
    (both realized and unrealized)                      3.89          6.36          3.34          2.29          2.90           .20
- ----------------------------------------------------------------------------------------------------------------------------------
Total from Investment Operations                        3.92          6.41          3.49          2.46          3.18           .29
- ----------------------------------------------------------------------------------------------------------------------------------
Less Distributions:
  Dividends (from net investment income)               (.03)         (.05)         (.15)         (.17)         (.30)         (.04)
  Dividends (in excess of net investment income)          --            --            --            --            --            --
  Distributions (from capital gains)                   (.14)        (1.30)         (.37)         (.23)            --            --
  Distributions (in excess of realized gains)             --            --            --            --            --            --
  Tax return of capital                                   --            --            --            --            --            --
- ----------------------------------------------------------------------------------------------------------------------------------
Total Distributions                                    (.17)        (1.35)         (.52)         (.40)         (.30)         (.04)
- ----------------------------------------------------------------------------------------------------------------------------------
Net Asset Value, End of Period                    $    27.29    $    23.54    $    18.48    $    15.51    $    13.45    $    10.57
- ----------------------------------------------------------------------------------------------------------------------------------
Total Return*                                         16.67%        35.66%        22.75%        18.45%        30.17%         2.76%
- ----------------------------------------------------------------------------------------------------------------------------------
Net Assets, End of Period (in thousands)          $1,775,338    $1,103,549    $  608,281    $  325,789    $  126,911    $   43,549
Average Net Assets for the Period (in thousands)  $1,392,755    $  789,454    $  477,914    $  216,125    $   77,344    $   26,464
Ratio of Gross Expenses to
  Average Net Assets**(1)                              0.67%         0.68%         0.70%         0.69%         0.78%           N/A
Ratio of Net Expenses to
  Average Net Assets**(1)                              0.67%         0.68%         0.69%         0.69%         0.76%         0.88%
Ratio of Net Investment Income to
  Average Net Assets**                                 0.27%         0.26%         0.91%         1.39%         1.24%         1.45%
Portfolio Turnover Rate**                                65%           73%          122%           87%          185%          169%

<CAPTION>
For a share outstanding during the
six months ended June 30 (unaudited)                                   Janus Aspen Aggressive Growth Portfolio
or through each fiscal year ended December 31        1999          1998          1997          1996          1995          1994
- ----------------------------------------------------------------------------------------------------------------------------------
<S>                                               <C>           <C>           <C>           <C>           <C>           <C>
Net Asset Value, Beginning of Period              $    27.64    $    20.55    $    18.24    $    17.08    $    13.62    $    11.80
- ----------------------------------------------------------------------------------------------------------------------------------
Income from Investment Operations:
  Net investment income/(loss)                         (.07)            --            --            --           .24           .11
  Net gains/(losses) on securities
    (both realized and unrealized)                      8.44          7.09          2.31          1.36          3.47          1.82
- ----------------------------------------------------------------------------------------------------------------------------------
Total from Investment Operations                        8.37          7.09          2.31          1.36          3.71          1.93
- ----------------------------------------------------------------------------------------------------------------------------------
Less Distributions:
  Dividends (from net investment income)                  --            --            --            --         (.25)         (.11)
  Dividends (in excess of net investment income)          --            --            --            --            --            --
  Distributions (from capital gains)                  (1.40)            --            --         (.19)            --            --
  Distributions (in excess of realized gains)             --            --            --            --            --            --
  Tax return of capital                                   --            --            --         (.01)            --            --
- ----------------------------------------------------------------------------------------------------------------------------------
Total Distributions                                   (1.40)            --            --         (.20)         (.25)         (.11)
- ----------------------------------------------------------------------------------------------------------------------------------
Net Asset Value, End of Period                    $    34.61    $    27.64    $    20.55    $    18.24    $    17.08    $    13.62
- ----------------------------------------------------------------------------------------------------------------------------------
Total Return*                                         30.73%        34.26%        12.66%         7.95%        27.48%        16.33%
- ----------------------------------------------------------------------------------------------------------------------------------
Net Assets, End of Period (in thousands)          $1,343,917    $  772,943    $  508,198    $  383,693    $  185,911    $   41,289
Average Net Assets for the Period (in thousands)  $1,018,834    $  576,444    $  418,464    $  290,629    $  107,582    $   14,152
Ratio of Gross Expenses to
  Average Net Assets**(1)                              0.73%         0.75%         0.76%         0.76%         0.86%           N/A
Ratio of Net Expenses to
  Average Net Assets**(1)                              0.73%         0.75%         0.76%         0.76%         0.84%         1.05%
Ratio of Net Investment Income to
  Average Net Assets**                               (0.51%)       (0.36%)       (0.10%)       (0.27%)         0.58%         2.18%
Portfolio Turnover Rate**                               121%          132%          130%           88%          155%          259%
</TABLE>

 * Total return not annualized for periods of less than one full year.
** Annualized for periods of less than one full year.
(1) See footnote #5 in Notes to Financial Statements.
N/A - Disclosure not required for prior periods.

See Notes to Financial Statements.

                                          Janus Aspen Series / June 30, 1999  53
<PAGE>

Financial | Highlights - Institutional Shares (continued)

<TABLE>
<CAPTION>
For a share outstanding during the
six months ended June 30 (unaudited)           Janus Aspen Capital Appreciation Portfolio
or through each fiscal year ended December 31        1999          1998         1997(1)
- ----------------------------------------------------------------------------------------
<S>                                               <C>           <C>           <C>
Net Asset Value, Beginning of Period              $    19.94    $    12.62    $    10.00
- ----------------------------------------------------------------------------------------
Income from Investment Operations:
  Net investment income/(loss)                           .05           .01           .05
  Net gains/(losses) on securities
    (both realized and unrealized)                      5.07          7.32          2.61
- ----------------------------------------------------------------------------------------
Total from Investment Operations                        5.12          7.33          2.66
- ----------------------------------------------------------------------------------------
Less Distributions:
  Dividends (from net investment income)               (.05)         (.01)         (.04)
  Dividends (in excess of net investment income)          --            --            --
  Distributions (from capital gains)                      --            --            --
  Distributions (in excess of realized gains)             --            --            --
  Tax return of capital                                   --            --            --
- ----------------------------------------------------------------------------------------
Total Distributions                                    (.05)         (.01)         (.04)
- ----------------------------------------------------------------------------------------
Net Asset Value, End of Period                    $    25.01    $    19.94    $    12.62
- ----------------------------------------------------------------------------------------
Total Return*                                         25.68%        58.11%        26.60%
- ----------------------------------------------------------------------------------------
Net Assets, End of Period (in thousands)          $  255,616    $   74,187    $    6,833
Average Net Assets for the Period (in thousands)  $  152,409    $   25,964    $    2,632
Ratio of Gross Expenses to
  Average Net Assets**(3)                              0.74%         0.92%         1.26%
Ratio of Net Expenses to
  Average Net Assets**(3)                              0.74%         0.91%         1.25%
Ratio of Net Investment Income to
  Average Net Assets**                                 0.67%         0.27%         1.43%
Portfolio Turnover Rate**                                72%           91%          101%

<CAPTION>
For a share outstanding during the
six months ended June 30 (unaudited)                                 Janus Aspen International Growth Portfolio
or through each fiscal year ended December 31        1999          1998          1997          1996          1995        1994(2)
- ----------------------------------------------------------------------------------------------------------------------------------
<S>                                               <C>           <C>           <C>           <C>           <C>           <C>
Net Asset Value, Beginning of Period              $    21.27    $    18.48    $    15.72    $    11.95    $     9.72    $    10.00
- ----------------------------------------------------------------------------------------------------------------------------------
Income from Investment Operations:
  Net investment income/(loss)                           .06           .13           .11           .05           .09         (.09)
  Net gains/(losses) on securities
    (both realized and unrealized)                      2.08          3.07          2.80          4.06          2.16         (.19)
- ----------------------------------------------------------------------------------------------------------------------------------
Total from Investment Operations                        2.14          3.20          2.91          4.11          2.25         (.28)
- ----------------------------------------------------------------------------------------------------------------------------------
Less Distributions:
  Dividends (from net investment income)               (.06)         (.14)         (.11)         (.11)         (.02)            --
  Dividends (in excess of net investment income)          --            --            --            --            --            --
  Distributions (from capital gains)                      --            --         (.01)         (.23)            --            --
  Distributions (in excess of realized gains)             --         (.27)         (.03)            --            --            --
  Tax return of capital                                   --            --            --            --            --            --
- ----------------------------------------------------------------------------------------------------------------------------------
Total Distributions                                    (.06)         (.41)         (.15)         (.34)         (.02)            --
- ----------------------------------------------------------------------------------------------------------------------------------
Net Asset Value, End of Period                    $    23.35    $    21.27    $    18.48    $    15.72    $    11.95    $     9.72
- ----------------------------------------------------------------------------------------------------------------------------------
Total Return*                                         10.06%        17.23%        18.51%        34.71%        23.15%       (2.80%)
- ----------------------------------------------------------------------------------------------------------------------------------
Net Assets, End of Period (in thousands)          $  402,260    $  311,110    $  161,091    $   27,192    $    1,608    $    1,353
Average Net Assets for the Period (in thousands)  $  346,401    $  234,421    $   96,164    $    7,437    $    1,792    $    1,421
Ratio of Gross Expenses to
  Average Net Assets**(3)                              0.82%         0.86%         0.96%         1.26%         2.69%           N/A
Ratio of Net Expenses to
  Average Net Assets**(3)                              0.82%         0.86%         0.96%         1.25%         2.50%         2.50%
Ratio of Net Investment Income to
  Average Net Assets**                                 0.56%         0.73%         0.70%         0.62%        (.80%)       (1.30%)
Portfolio Turnover Rate**                                81%           93%           86%           65%          211%          275%
</TABLE>

(1) Period May 1, 1997, (inception) to December 31, 1997
(2) Period May 2, 1994 (inception) to December 31, 1994
(3) See footnote #5 in Notes to Financial Statements.
 * Total return not annualized for periods of less than one full year.
** Annualized for periods of less than one full year.
N/A - Disclosure not required for prior periods.

See Notes to Financial Statements.

54  Janus Aspen Series / June 30, 1999
<PAGE>

<TABLE>
<CAPTION>
For a share outstanding during the
six months ended June 30 (unaudited)                                   Janus Aspen Worldwide Growth Portfolio
or through each fiscal year ended December 31        1999          1998          1997          1996          1995          1994
- ----------------------------------------------------------------------------------------------------------------------------------
<S>                                               <C>           <C>           <C>           <C>           <C>           <C>
Net Asset Value, Beginning of Period              $    29.09    $    23.39    $    19.44    $    15.31    $    12.07    $    11.89
- ----------------------------------------------------------------------------------------------------------------------------------
Income from Investment Operations:
  Net investment income/(loss)                           .06           .16           .16           .16           .11           .04
  Net gains/(losses) on securities
    (both realized and unrealized)                      3.65          6.59          4.14          4.27          3.19           .14
- ----------------------------------------------------------------------------------------------------------------------------------
Total from Investment Operations                        3.71          6.75          4.30          4.43          3.30           .18
- ----------------------------------------------------------------------------------------------------------------------------------
Less Distributions:
  Dividends (from net investment income)               (.06)         (.18)         (.17)         (.17)         (.06)           --
  Dividends (in excess of net investment income)          --            --         (.02)            --            --            --
  Distributions (from capital gains)                      --            --         (.16)         (.13)            --            --
  Distributions (in excess of realized gains)             --         (.87)            --            --            --            --
  Tax return of capital                                   --            --            --            --            --            --
- ----------------------------------------------------------------------------------------------------------------------------------
Total Distributions                                    (.06)        (1.05)         (.35)         (.30)         (.06)            --
- ----------------------------------------------------------------------------------------------------------------------------------
Net Asset Value, End of Period                    $    32.74    $    29.09    $    23.39    $    19.44    $    15.31    $    12.07
- ----------------------------------------------------------------------------------------------------------------------------------
Total Return*                                         12.75%        28.92%        22.15%        29.04%        27.37%         1.53%
- ----------------------------------------------------------------------------------------------------------------------------------
Net Assets, End of Period (in thousands)          $3,747,671    $2,890,375    $1,576,548    $  582,603    $  108,563    $   37,728
Average Net Assets for the Period (in thousands)  $3,270,797    $2,217,695    $1,148,951    $  304,111    $   59,440    $   22,896
Ratio of Gross Expenses to
  Average Net Assets**(1)                              0.84%         0.72%         0.74%         0.80%         0.90%           N/A
Ratio of Net Expenses to
  Average Net Assets**(1)                              0.84%         0.72%         0.74%         0.80%         0.87%         1.18%
Ratio of Net Investment Income to
  Average Net Assets**                                 0.42%         0.64%         0.67%         0.83%         0.95%         0.50%
Portfolio Turnover Rate**                                54%           77%           80%           62%          113%          217%

<CAPTION>
For a share outstanding during the
six months ended June 30 (unaudited)                                       Janus Aspen Balanced Portfolio
or through each fiscal year ended December 31        1999          1998          1997          1996          1995          1994
- ----------------------------------------------------------------------------------------------------------------------------------
<S>                                               <C>           <C>           <C>           <C>           <C>           <C>
Net Asset Value, Beginning of Period              $    22.50    $    17.47    $    14.77    $    13.03    $    10.63    $    10.64
- ----------------------------------------------------------------------------------------------------------------------------------
Income from Investment Operations:
  Net investment income/(loss)                           .25           .39           .34           .32           .17           .15
  Net gains/(losses) on securities
    (both realized and unrealized)                      2.46          5.51          2.89          1.81          2.45         (.06)
- ----------------------------------------------------------------------------------------------------------------------------------
Total from Investment Operations                        2.71          5.90          3.23          2.13          2.62           .09
- ----------------------------------------------------------------------------------------------------------------------------------
Less Distributions:
  Dividends (from net investment income)               (.26)         (.38)         (.35)         (.30)         (.22)         (.10)
  Dividends (in excess of net investment income)          --            --            --            --            --            --
  Distributions (from capital gains)                      --         (.45)         (.18)         (.09)            --            --
  Distributions (in excess of realized gains)             --         (.04)            --            --            --            --
  Tax return of capital                                   --            --            --            --            --            --
- ----------------------------------------------------------------------------------------------------------------------------------
Total Distributions                                    (.26)         (.87)         (.53)         (.39)         (.22)         (.10)
- ----------------------------------------------------------------------------------------------------------------------------------
Net Asset Value, End of Period                    $    24.95    $    22.50    $    17.47    $    14.77    $    13.03    $    10.63
- ----------------------------------------------------------------------------------------------------------------------------------
Total Return*                                         12.06%        34.28%        22.10%        16.18%        24.79%         0.84%
- ----------------------------------------------------------------------------------------------------------------------------------
Net Assets, End of Period (in thousands)          $1,547,411    $  882,495    $  362,409    $   85,480    $   14,021    $    3,153
Average Net Assets for the Period (in thousands)  $1,191,109    $  555,002    $  176,432    $   43,414    $    5,739    $    2,336
Ratio of Gross Expenses to
  Average Net Assets**(1)                              0.70%         0.74%         0.83%         0.94%         1.37%           N/A
Ratio of Net Expenses to
  Average Net Assets**(1)                              0.70%         0.74%         0.82%         0.92%         1.30%         1.57%
Ratio of Net Investment Income to
  Average Net Assets**                                 2.64%         2.41%         2.87%         2.92%         2.41%         1.90%
Portfolio Turnover Rate**                                72%           70%          139%          103%          149%          158%
</TABLE>

 * Total return not annualized for periods of less than one full year.
** Annualized for periods of less than one full year.
(1) See footnote #5 in Notes to Financial Statements.
N/A - Disclosure not required for prior periods.

                                          Janus Aspen Series / June 30, 1999  55
<PAGE>

Financial | Highlights - Institutional Shares (continued)

<TABLE>
<CAPTION>
For a share outstanding during the
six months ended June 30 (unaudited)                Janus Aspen Equity Income Portfolio
or through each fiscal year ended December 31        1999          1998         1997(1)
- ----------------------------------------------------------------------------------------
<S>                                               <C>           <C>           <C>
Net Asset Value, Beginning of Period              $    19.41    $    13.46    $    10.00
- ----------------------------------------------------------------------------------------
Income from Investment Operations:
  Net investment income/(loss)                           .02           .02           .01
  Net gains/(losses) on securities
    (both realized and unrealized)                      3.90          6.16          3.46
- ----------------------------------------------------------------------------------------
Total from Investment Operations                        3.92          6.18          3.47
- ----------------------------------------------------------------------------------------
Less Distributions:
  Dividends (from net investment income)               (.02)         (.02)         (.01)
  Dividends (in excess of net investment income)          --            --            --
  Distributions (from capital gains)                   (.08)         (.21)            --
  Distributions (in excess of realized gains)             --            --            --
  Tax return of capital                                   --            --            --
- ----------------------------------------------------------------------------------------
Total Distributions                                    (.10)         (.23)         (.01)
- ----------------------------------------------------------------------------------------
Net Asset Value, End of Period                    $    23.23    $    19.41    $    13.46
- ----------------------------------------------------------------------------------------
Total Return*                                         20.21%        46.24%        34.70%
- ----------------------------------------------------------------------------------------
Net Assets, End of Period (in thousands)          $   16,175    $    9,017    $    3,047
Average Net Assets for the Period (in thousands)  $   12,120    $    5,629    $    1,101
Ratio of Gross Expenses to
  Average Net Assets**(3)                              1.25%         1.25%         1.25%
Ratio of Net Expenses to
  Average Net Assets**(3)                              1.25%         1.25%         1.25%
Ratio of Net Investment Income to
  Average Net Assets**                                 0.17%         0.17%         0.35%
Portfolio Turnover Rate**                                79%           79%          128%

<CAPTION>
For a share outstanding during the                       Janus Aspen
six months ended June 30 (unaudited)             Growth and Income Portfolio
or through each fiscal year ended December 31        1999          1998(2)
- --------------------------------------------------------------------------------
Net Asset Value, Beginning of Period              $    11.96    $    10.00
- --------------------------------------------------------------------------------
Income from Investment Operations:
  Net investment income/(loss)                           .01           .02
  Net gains/(losses) on securities
    (both realized and unrealized)                      2.46          1.96
- --------------------------------------------------------------------------------
Total from Investment Operations                        2.47          1.98
- --------------------------------------------------------------------------------
Less Distributions:
  Dividends (from net investment income)               (.01)         (.02)
  Dividends (in excess of net investment income)          --            --
  Distributions (from capital gains)                      --            --
  Distributions (in excess of realized gains)             --            --
  Tax return of capital                                   --            --
- --------------------------------------------------------------------------------
Total Distributions                                    (.01)         (.02)
- --------------------------------------------------------------------------------
Net Asset Value, End of Period                    $    14.42    $    11.96
- --------------------------------------------------------------------------------
Total Return*                                         20.57%        19.80%
- --------------------------------------------------------------------------------
Net Assets, End of Period (in thousands)          $   23,827    $    6,413
Average Net Assets for the Period (in thousands)  $   12,476    $    2,883
Ratio of Gross Expenses to
  Average Net Assets**(3)                              1.25%         1.25%
Ratio of Net Expenses to
  Average Net Assets**(3)                              1.25%         1.25%
Ratio of Net Investment Income to
  Average Net Assets**                                 0.29%         0.66%
Portfolio Turnover Rate**                                55%           62%

(1) Period May 1, 1997, (inception) to December 31, 1997.
(2) Period May 1, 1998, (inception) to December 31, 1998.
(3) See footnote #5 in Notes to Financial Statements.
 * Total return not annualized for periods of less than one full year.
** Annualized for periods of less than one full year.

See Notes to Financial Statements.

56  Janus Aspen Series / June 30, 1999
<PAGE>

For a share outstanding during the
six months ended June 30 (unaudited)                                    Janus Aspen Flexible Income Portfolio
or through each fiscal year ended December 31        1999          1998          1997          1996          1995          1994
- ----------------------------------------------------------------------------------------------------------------------------------
<S>                                               <C>           <C>           <C>           <C>           <C>           <C>
Net Asset Value, Beginning of Period              $    12.05    $    11.78    $    11.24    $    11.11    $     9.48    $     9.97
- ----------------------------------------------------------------------------------------------------------------------------------
Income from Investment Operations:
  Net investment income/(loss)                           .35           .64           .67           .74           .53           .47
  Net gains/(losses) on securities
    (both realized and unrealized)                     (.42)           .41           .62           .24          1.70         (.56)
- ----------------------------------------------------------------------------------------------------------------------------------
Total from Investment Operations                       (.07)          1.05          1.29           .98          2.23         (.09)
- ----------------------------------------------------------------------------------------------------------------------------------
Less Distributions:
  Dividends (from net investment income)               (.35)         (.67)         (.64)         (.72)         (.60)         (.40)
  Dividends (in excess of net investment income)          --            --            --            --            --            --
  Distributions (from capital gains)                   (.07)         (.11)         (.11)         (.13)            --            --
  Distributions (in excess of realized gains)             --            --            --            --            --            --
  Tax return of capital                                   --            --            --            --            --            --
- ----------------------------------------------------------------------------------------------------------------------------------
Total Distributions                                    (.42)         (.78)         (.75)         (.85)         (.60)         (.40)
- ----------------------------------------------------------------------------------------------------------------------------------
Net Asset Value, End of Period                    $    11.56    $    12.05    $    11.78    $    11.24    $    11.11    $     9.48
- ----------------------------------------------------------------------------------------------------------------------------------
Total Return*                                        (0.63%)         9.11%        11.76%         9.19%        23.86%       (0.91%)
- ----------------------------------------------------------------------------------------------------------------------------------
Net Assets, End of Period (in thousands)          $  160,952    $  129,582    $   54,098    $   25,315    $   10,831    $    1,924
Average Net Assets for the Period (in thousands)  $  146,696    $   86,627    $   36,547    $   17,889    $    5,556    $    1,636
Ratio of Gross Expenses to
  Average Net Assets**(1)                              0.76%         0.73%         0.75%         0.84%         1.07%           N/A
Ratio of Net Expenses to
  Average Net Assets**(1)                              0.75%         0.73%         0.75%         0.83%         1.00%         1.00%
Ratio of Net Investment Income to
  Average Net Assets**                                 6.48%         6.36%         6.90%         7.31%         7.46%         5.49%
Portfolio Turnover Rate**                               112%          145%          119%          250%          236%          234%

<CAPTION>
For a share outstanding during the
six months ended June 30 (unaudited)                        Janus Aspen High-Yield Portfolio
or through each fiscal year ended December 31        1999          1998          1997         1996(2)
- ------------------------------------------------------------------------------------------------------
<S>                                               <C>           <C>           <C>           <C>
Net Asset Value, Beginning of Period              $    10.85    $    11.78    $    10.83    $    10.00
- ------------------------------------------------------------------------------------------------------
Income from Investment Operations:
  Net investment income/(loss)                           .51           .87           .70           .43
  Net gains/(losses) on securities
    (both realized and unrealized)                       .01         (.70)           .99           .80
- ------------------------------------------------------------------------------------------------------
Total from Investment Operations                         .52           .17          1.69          1.23
- ------------------------------------------------------------------------------------------------------
Less Distributions:
  Dividends (from net investment income)               (.53)         (.89)         (.68)         (.40)
  Dividends (in excess of net investment income)          --            --            --            --
  Distributions (from capital gains)                      --         (.05)         (.06)            --
  Distributions (in excess of realized gains)             --         (.16)            --            --
  Tax return of capital                                   --            --            --            --
- ------------------------------------------------------------------------------------------------------
Total Distributions                                    (.53)        (1.10)         (.74)         (.40)
- ------------------------------------------------------------------------------------------------------
Net Asset Value, End of Period                    $    10.84    $    10.85    $    11.78    $    10.83
- ------------------------------------------------------------------------------------------------------
Total Return*                                          4.70%         1.26%        15.98%        12.40%
- ------------------------------------------------------------------------------------------------------
Net Assets, End of Period (in thousands)          $    2,542    $    2,977    $    2,914    $      783
Average Net Assets for the Period (in thousands)  $    2,887    $    3,281    $    1,565    $      459
Ratio of Gross Expenses to
  Average Net Assets**(1)                              1.00%         1.00%         1.00%         1.01%
Ratio of Net Expenses to
  Average Net Assets**(1)                              1.00%         1.00%         1.00%         1.00%
Ratio of Net Investment Income to
  Average Net Assets**                                 7.89%         7.76%         7.98%         5.74%
Portfolio Turnover Rate**                               800%          301%          299%          301%
</TABLE>

 * Total return not annualized for periods of less than one full year.
** Annualized for periods of less than one full year.
(1) See footnote #5 in Notes to Financial Statements.
(2) Period May 1, 1996, (inception) to December 31, 1996.
N/A - Disclosure not required for prior periods.

                                          Janus Aspen Series / June 30, 1999  57
<PAGE>

Financial | Highlights - Institutional Shares (continued)

<TABLE>
<CAPTION>
For a share outstanding during the
six months ended June 30 (unaudited)                              Janus Aspen Money Market Portfolio
or through each fiscal year ended December 31        1999          1998          1997          1996         1995(1)
- --------------------------------------------------------------------------------------------------------------------
<S>                                               <C>           <C>           <C>           <C>           <C>
Net Asset Value, Beginning of Period              $     1.00    $     1.00    $     1.00    $     1.00    $     1.00
- --------------------------------------------------------------------------------------------------------------------
Income from Investment Operations:
  Net investment income/(loss)                           .02           .05           .05           .05           .04
  Net gains/(losses) on securities
    (both realized and unrealized)                        --            --            --            --            --
- --------------------------------------------------------------------------------------------------------------------
Total from Investment Operations                         .02           .05           .05           .05           .04
- --------------------------------------------------------------------------------------------------------------------
Less Distributions:
  Dividends (from net investment income)               (.02)         (.05)         (.05)         (.05)         (.04)
  Dividends (in excess of net investment income)          --            --            --            --            --
  Distributions (from capital gains)                      --            --            --            --            --
  Distributions (in excess of realized gains)             --            --            --            --            --
  Tax return of capital                                   --            --            --            --            --
- --------------------------------------------------------------------------------------------------------------------
Total Distributions                                    (.02)         (.05)         (.05)         (.05)         (.04)
- --------------------------------------------------------------------------------------------------------------------
Net Asset Value, End of Period                    $     1.00    $     1.00    $     1.00    $     1.00    $     1.00
- --------------------------------------------------------------------------------------------------------------------
Total Return*                                          2.25%         5.36%         5.17%         5.05%         3.63%
- --------------------------------------------------------------------------------------------------------------------
Net Assets, End of Period (in thousands)          $   52,408    $   38,690    $   15,374    $    6,106    $    1,735
Average Net Assets for the Period (in thousands)  $   46,609    $   31,665    $    8,926    $    3,715    $    1,543
Ratio of Gross Expenses to
  Average Net Assets**(2)                              0.48%         0.34%         0.50%         0.50%         0.50%
Ratio of Net Expenses to
  Average Net Assets**(2)                              0.48%         0.34%         0.50%         0.50%         0.50%
Ratio of Net Investment Income to
  Average Net Assets**                                 4.60%         5.21%         5.17%         4.93%         5.30%
</TABLE>

 * Total return not annualized for periods of less than one full year.
** Annualized for periods of less than one full year.
(1) Period May 1, 1995, (inception) to December 31, 1995.
(2) See footnote #5 in Notes to Financial Statements.
N/A - Disclosure not required for prior periods.

See Notes to Financial Statements.

58  Janus Aspen Series / June 30, 1999
<PAGE>

                                      Financial | Highlights - Retirement Shares

<TABLE>
<CAPTION>
For a share outstanding during the                                                                       Janus Aspen
six months ended June 30 (unaudited) or                Janus Aspen Growth Portfolio               Aggressive Growth Portfolio
through each fiscal year ended December 31           1999          1998         1997(1)        1999          1998         1997(1)
- ----------------------------------------------------------------------------------------------------------------------------------
<S>                                               <C>           <C>           <C>           <C>           <C>           <C>
Net Asset Value, Beginning of Period              $    23.45    $    18.46    $    16.18    $    27.42    $    20.49    $    16.12
- ----------------------------------------------------------------------------------------------------------------------------------
Income from Investment Operations:
  Net investment income/(loss)                           .09         (.03)           .04           .12         (.12)         (.06)
  Net gains/(losses) on securities
    (both realized and unrealized)                      3.91          6.32          2.71          8.10          7.05          4.43
- ----------------------------------------------------------------------------------------------------------------------------------
Total from Investment Operations                        4.00          6.29          2.75          8.22          6.93          4.37
- ----------------------------------------------------------------------------------------------------------------------------------
Less Distributions:
  Dividends (from net investment income)                  --            --         (.10)            --            --            --
  Distributions (from capital gains)                   (.14)        (1.30)         (.37)        (1.40)            --            --
- ----------------------------------------------------------------------------------------------------------------------------------
Total Distributions                                    (.14)        (1.30)         (.47)        (1.40)            --            --
- ----------------------------------------------------------------------------------------------------------------------------------
Net Asset Value, End of Period                    $    27.31    $    23.45    $    18.46    $    34.24    $    27.42    $    20.49
- ----------------------------------------------------------------------------------------------------------------------------------
Total Return*                                         17.07%        34.99%        17.22%        30.43%        33.58%        27.11%
- ----------------------------------------------------------------------------------------------------------------------------------
Net Assets, End of Period (in thousands)          $    2,500    $       18    $       12    $    3,438    $       17    $       13
Average Net Assets for the Period (in thousands)  $      861    $       13    $       11    $    1,275    $       14    $       11
Ratio of Gross Expenses to
  Average Net Assets**(2)                              1.19%         1.18%         1.20%         1.24%         1.26%         1.32%
Ratio of Net Expenses to
  Average Net Assets**(2)                              1.19%         1.18%         1.20%         1.23%         1.26%         1.32%
Ratio of Net Investment Income to
  Average Net Assets**                               (0.13%)       (0.23%)         0.29%       (1.02%)       (0.86%)       (0.62%)
Portfolio Turnover Rate**                                65%           73%          122%          121%          132%          130%

<CAPTION>
For a share outstanding during the                         Janus Aspen Capital                    Janus Aspen International
six months ended June 30 (unaudited) or                  Appreciation Portfolio                       Growth Portfolio
through each fiscal year ended December 31           1999          1998         1997(1)        1999          1998         1997(1)
- ----------------------------------------------------------------------------------------------------------------------------------
<S>                                               <C>           <C>           <C>           <C>           <C>           <C>
Net Asset Value, Beginning of Period              $    19.86    $    12.62    $    10.00    $    21.27    $    18.44    $    16.80
- ----------------------------------------------------------------------------------------------------------------------------------
Income from Investment Operations:
  Net investment income/(loss)                         (.07)         (.04)           .12           .04           .05           .04
  Net gains/(losses) on securities
    (both realized and unrealized)                      5.11          7.28          2.50          2.04          3.07          1.73
- ----------------------------------------------------------------------------------------------------------------------------------
Total from Investment Operations                        5.04          7.24          2.62          2.08          3.12          1.77
- ----------------------------------------------------------------------------------------------------------------------------------
Less Distributions:
  Dividends (from net investment income)                  --            --            --         (.01)         (.01)         (.09)
  Distributions (from capital gains)                      --            --            --            --         (.28)         (.04)
- ----------------------------------------------------------------------------------------------------------------------------------
Total Distributions                                       --            --            --         (.01)         (.29)         (.13)
- ----------------------------------------------------------------------------------------------------------------------------------
Net Asset Value, End of Period                    $    24.90    $    19.86    $    12.62    $    23.34    $    21.27    $    18.44
- ----------------------------------------------------------------------------------------------------------------------------------
Total Return*                                         25.38%        57.37%        26.20%         9.78%        16.86%        10.53%
- ----------------------------------------------------------------------------------------------------------------------------------
Net Assets, End of Period (in thousands)          $    2,485    $       20    $       13    $    2,209    $       17    $       11
Average Net Assets for the Period (in thousands)  $      870    $       15    $       12    $      796    $       13    $       11
Ratio of Gross Expenses to
  Average Net Assets**(2)                              1.17%         1.44%         1.73%         1.30%         1.35%         1.45%
Ratio of Net Expenses to
  Average Net Assets**(2)                              1.17%         1.44%         1.73%         1.30%         1.35%         1.45%
Ratio of Net Investment Income to
  Average Net Assets**                                 0.41%       (0.25%)         1.55%         0.62%         0.26%         0.26%
Portfolio Turnover Rate**                                72%           91%          101%           81%           93%           86%
</TABLE>

 * Total return not annualized for periods of less than one full year.
** Annualized for periods of less than one full year.
(1) Period May 1, 1997, (inception) to December 31, 1997.
(2) See footnote #5 in Notes to Financial Statements.

See Notes to Financial Statements.

                                          Janus Aspen Series / June 30, 1999  59
<PAGE>

Financial | Highlights - Retirement Shares (continued)

<TABLE>
<CAPTION>
For a share outstanding during the                        Janus Aspen Worldwide                    Janus Aspen
six months ended June 30 (unaudited) or                      Growth Portfolio                   Balanced Portfolio
through each fiscal year ended December 31           1999          1998         1997(1)        1999          1998         1997(1)
- ----------------------------------------------------------------------------------------------------------------------------------
<S>                                               <C>           <C>           <C>           <C>           <C>           <C>
Net Asset Value, Beginning of Period              $    29.06    $    23.36    $    20.72    $    22.59    $    17.47    $    15.38
- ----------------------------------------------------------------------------------------------------------------------------------
Income from Investment Operations:
  Net investment income/(loss)                           .01           .02           .14           .22           .21           .27
  Net gains/(losses) on securities
    (both realized and unrealized)                      3.63          6.57          2.80          2.45          5.58          2.30
- ----------------------------------------------------------------------------------------------------------------------------------
Total from Investment Operations                        3.64          6.59          2.94          2.67          5.79          2.57
- ----------------------------------------------------------------------------------------------------------------------------------
Less Distributions:
  Dividends (from net investment income)                  --         (.02)         (.14)         (.22)         (.18)         (.30)
  Distributions (from capital gains)                      --         (.87)         (.16)            --         (.49)         (.18)
- ----------------------------------------------------------------------------------------------------------------------------------
Total Distributions                                       --         (.89)         (.30)         (.22)         (.67)         (.48)
- ----------------------------------------------------------------------------------------------------------------------------------
Net Asset Value, End of Period                    $    32.70    $    29.06    $    23.36    $    25.04    $    22.59    $    17.47
- ----------------------------------------------------------------------------------------------------------------------------------
Total Return*                                         12.53%        28.25%        14.22%        11.84%        33.59%        16.92%
- ----------------------------------------------------------------------------------------------------------------------------------
Net Assets, End of Period (in thousands)          $   36,720    $    5,837    $      403    $   25,773    $   17,262    $       12
Average Net Assets for the Period (in thousands)  $   20,029    $    1,742    $       11    $   21,255    $    3,650    $       11
Ratio of Gross Expenses to
  Average Net Assets**(2)                              1.38%         1.22%         1.26%         1.20%         1.24%         1.32%
Ratio of Net Expenses to
  Average Net Assets**(2)                              1.38%         1.22%         1.26%         1.20%         1.24%         1.32%
Ratio of Net Investment Income to
  Average Net Assets**                                 0.04%       (0.02%)         0.16%         2.13%         2.04%         2.38%
Portfolio Turnover Rate**                                54%           77%           80%           72%           70%          139%

<CAPTION>
For a share outstanding during the                      Janus Aspen Equity Income             Janus Aspen Growth and
six months ended June 30 (unaudited) or                         Portfolio                        Income Portfolio
through each fiscal year ended December 31           1999          1998         1997(1)        1999         1998(3)
- --------------------------------------------------------------------------------------------------------------------
<S>                                               <C>           <C>           <C>           <C>           <C>
Net Asset Value, Beginning of Period              $    19.28    $    13.42    $    10.00    $    11.94    $    10.00
- --------------------------------------------------------------------------------------------------------------------
Income from Investment Operations:
  Net investment income/(loss)                         (.01)         (.05)           .01         (.02)           .01
  Net gains/(losses) on securities
    (both realized and unrealized)                      3.85          6.12          3.41          2.45          1.93
- --------------------------------------------------------------------------------------------------------------------
Total from Investment Operations                        3.84          6.07          3.42          2.43          1.94
- --------------------------------------------------------------------------------------------------------------------
Less Distributions:
  Dividends (from net investment income)                  --            --            --            --            --
  Distributions (from capital gains)                   (.09)         (.21)            --            --            --
- --------------------------------------------------------------------------------------------------------------------
Total Distributions                                    (.09)         (.21)            --            --            --
- --------------------------------------------------------------------------------------------------------------------
Net Asset Value, End of Period                    $    23.03    $    19.28    $    13.42    $    14.37    $    11.94
- --------------------------------------------------------------------------------------------------------------------
Total Return*                                         19.90%        45.55%        34.20%        20.27%        19.40%
- --------------------------------------------------------------------------------------------------------------------
Net Assets, End of Period (in thousands)          $       30    $       20    $       13    $    1,396    $       12
Average Net Assets for the Period (in thousands)  $       22    $       16    $       12    $      485    $       10
Ratio of Gross Expenses to
  Average Net Assets**(2)                              1.76%         1.75%         1.74%         1.75%         1.72%
Ratio of Net Expenses to
  Average Net Assets**(2)                              1.75%         1.75%         1.74%         1.75%         1.72%
Ratio of Net Investment Income to
  Average Net Assets**                               (0.32%)       (0.33)%         0.07%       (0.18%)         0.21%
Portfolio Turnover Rate**                                79%           79%          128%           55%           62%
</TABLE>

(1) Period May 1, 1997, (inception) to December 31, 1997.
(2) See footnote #5 in Notes to Financial Statements.
(3) Period May 1, 1998, (inception) to December 31, 1998
 * Total return not annualized for periods of less than one full year.
** Annualized for periods of less than one full year.

See Notes to Financial Statements.

60  Janus Aspen Series / June 30, 1999
<PAGE>

<TABLE>
<CAPTION>
For a share outstanding during the                      Janus Aspen Flexible Income                      Janus Aspen
six months ended June 30 (unaudited) or                         Portfolio                            High-Yield Portfolio
through each fiscal year ended December 31           1999          1998         1997(1)        1999          1998         1997(1)
- ----------------------------------------------------------------------------------------------------------------------------------
<S>                                               <C>           <C>           <C>           <C>           <C>           <C>
Net Asset Value, Beginning of Period              $    12.05    $    11.77    $    11.41    $    10.84    $    11.78    $    11.19
- ----------------------------------------------------------------------------------------------------------------------------------
Income from Investment Operations:
  Net investment income/(loss)                           .19           .73           .50           .41           .87           .59
  Net gains/(losses) on securities
    (both realized and unrealized)                     (.32)           .27           .58           .08         (.77)           .71
- ----------------------------------------------------------------------------------------------------------------------------------
Total from Investment Operations                       (.13)          1.00          1.08           .49           .10          1.30
- ----------------------------------------------------------------------------------------------------------------------------------
Less Distributions:
  Dividends (from net investment income)               (.18)         (.61)         (.61)         (.40)         (.83)         (.65)
  Distributions (from capital gains)                   (.07)         (.11)         (.11)            --         (.21)         (.06)
- ----------------------------------------------------------------------------------------------------------------------------------
Total Distributions                                    (.25)         (.72)         (.72)         (.40)        (1.04)         (.71)
- ----------------------------------------------------------------------------------------------------------------------------------
Net Asset Value, End of Period                    $    11.67    $    12.05    $    11.77    $    10.93    $    10.84    $    11.78
- ----------------------------------------------------------------------------------------------------------------------------------
Total Return*                                        (1.05%)         8.58%         9.73%         4.42%         0.67%        11.96%
- ----------------------------------------------------------------------------------------------------------------------------------
Net Assets, End of Period (in thousands)          $      214    $       12    $       11    $       12    $       11    $       11
Average Net Assets for the Period (in thousands)  $      110    $       11    $       10    $       12    $       12    $       11
Ratio of Gross Expenses to
  Average Net Assets**(2)                              1.24%         1.24%         1.23%         1.51%         1.50%         1.50%
Ratio of Net Expenses to
  Average Net Assets**(2)                              1.24%         1.23%         1.23%         1.50%         1.50%         1.50%
Ratio of Net Investment Income to
  Average Net Assets**                                 6.25%         5.92%         6.39%         7.42%         7.33%         7.42%
Portfolio Turnover Rate**                               112%          145%          119%          800%          301%          299%

<CAPTION>
For a share outstanding during the                          Janus Aspen Money
six months ended June 30 (unaudited) or                      Market Portfolio
through each fiscal year ended December 31           1999          1998         1997(1)
- ----------------------------------------------------------------------------------------
<S>                                               <C>           <C>           <C>
Net Asset Value, Beginning of Period              $     1.00    $     1.00    $     1.00
- ----------------------------------------------------------------------------------------
Income from Investment Operations:
  Net investment income/(loss)                           .02           .05           .03
  Net gains/(losses) on securities
    (both realized and unrealized)                        --            --            --
- ----------------------------------------------------------------------------------------
Total from Investment Operations                         .02           .05           .03
- ----------------------------------------------------------------------------------------
Less Distributions:
  Dividends (from net investment income)               (.02)         (.05)         (.03)
  Distributions (from capital gains)                      --            --            --
- ----------------------------------------------------------------------------------------
Total Distributions                                    (.02)         (.05)         (.03)
- ----------------------------------------------------------------------------------------
Net Asset Value, End of Period                    $     1.00    $     1.00    $     1.00
- ----------------------------------------------------------------------------------------
Total Return*                                          2.01%         4.85%         3.13%
- ----------------------------------------------------------------------------------------
Net Assets, End of Period (in thousands)          $       11    $       11    $       10
Average Net Assets for the Period (in thousands)  $       11    $       10    $       10
Ratio of Gross Expenses to
  Average Net Assets**(2)                              0.97%         0.84%         1.00%
Ratio of Net Expenses to
  Average Net Assets**(2)                              0.97%         0.84%         1.00%
Ratio of Net Investment Income to
  Average Net Assets**                                 4.09%         4.74%         4.66%
</TABLE>

 * Total return not annualized for periods of less than one full year.
 ** Annualized for periods of less than one full year.
(1) Period May 1, 1997, (inception) to December 31, 1997.
(2) See footnote #5 in Notes to Financial Statements.
N/A - Disclosure not required for prior periods.

                                          Janus Aspen Series / June 30, 1999  61
<PAGE>

Notes to | Schedules of Investments


ADR - American Depository Receipt

DEM - German Deutschemark

EUR - Euro

GBP - British Pound

GDR - Global Depository Receipt

 * Non-income-producing security

** A portion of this  security  has been  segregated  by the  custodian to cover
   margin or segregation  requirements on open futures  contracts and/or forward
   currency contracts.

+  Securities  are  registered  pursuant  to Rule  144A and may be  deemed to be
   restricted for resale.

1) Variable Rate Notes.  The interest  rate,  which is based on specific,  or an
   index of, market interest rates, is subject to change.  Rates in the security
   description are as of June 30, 1999.

2) Money market funds may hold securities with stated maturities of greater than
   397 days when those  securities have features that allow a fund to "put" back
   the  security  to  the  issuer  or  to a  third  party  within  397  days  of
   acquisition.  The maturity dates shown in the security  descriptions  are the
   stated maturity dates.

3) Repurchase Agreements held by a Portfolio are fully collateralized,  and such
   collateral is in the possession of the Portfolio's custodian.  The collateral
   is  evaluated  daily to ensure its market value equals or exceeds the current
   market value of the repurchase  agreements including accrued interest. In the
   event of default on the obligation to repurchase, the Portfolio has the right
   to liquidate the  collateral  and apply the proceeds in  satisfaction  of the
   obligation.  In the event of default or  bankruptcy by the other party to the
   agreement,  realization and/or retention of the collateral or proceeds may be
   subject to legal proceedings.

#  The Investment  Company Act of 1940 defines  affiliates as those companies in
   which a fund holds 5% or more of the outstanding voting securities. Following
   is a summary  of the  transactions  with each such  affiliate  for the period
   ended June 30, 1999.

<TABLE>
<CAPTION>
                                               Purchases                    Sales          Realized     Dividend    Market Value
                                          Shares       Cost         Shares        Cost    Gain/(Loss)    Income      at 6/30/99
- --------------------------------------------------------------------------------------------------------------------------------
Janus Aspen Worldwide Growth Portfolio
<S>                                     <C>         <C>                <C>         <C>         <C>         <C>       <C>
British Telecommunications PLC          1,498,957   $25,502,610        --          --          --          --        $25,178,060
- --------------------------------------------------------------------------------------------------------------------------------
</TABLE>

62  Janus Aspen Series / June 30, 1999
<PAGE>

                                                 Notes to | Financial Statements

The following  section  describes the  organization  and significant  accounting
policies of the  Portfolios  and provides  more detailed  information  about the
schedules and tables that appear throughout this report. In addition,  the Notes
explain  how the  Portfolios  operate  and the  methods  used in  preparing  and
presenting this report.

1. ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES

   Janus Aspen Series (the "Trust") was organized as a Delaware Trust on May 20,
   1993, and is registered  under the Investment  Company Act of 1940 (the "1940
   Act") as a no-load,  open-end management investment company. The Trust offers
   11 Portfolios or series of shares with  differing  investment  objectives and
   policies. Eight Portfolios invest primarily in equity securities: Janus Aspen
   Growth  Portfolio,  Janus  Aspen  Aggressive  Growth  Portfolio,  Janus Aspen
   Capital Appreciation  Portfolio,  Janus Aspen International Growth Portfolio,
   Janus Aspen Worldwide Growth Portfolio, Janus Aspen Balanced Portfolio, Janus
   Aspen Equity Income  Portfolio,  and Janus Aspen Growth and Income Portfolio.
   Two Portfolios invest primarily in income-producing  securities:  Janus Aspen
   Flexible Income Portfolio and Janus Aspen High-Yield  Portfolio.  Janus Aspen
   Money Market Portfolio  invests in short-term money market  securities.  Each
   Portfolio is  diversified  as defined in the 1940 Act,  with the exception of
   the Aggressive Growth Portfolio and Capital Appreciation Portfolio, which are
   nondiversified.

   Institutional  Shares of the Trust are issued and redeemed only in connection
   with investment in and payments under variable annuity contracts and variable
   life insurance contracts  (collectively  "variable insurance contracts"),  as
   well as certain qualified retirement plans.  Effective May 1, 1997, the Trust
   issued a new class of shares, the Retirement Shares. Retirement Shares of the
   Trust are issued and  redeemed  only in  connection  with  certain  qualified
   retirement  plans.  Janus Capital invested $10,000 of initial seed capital in
   the Retirement Shares of each Portfolio.

   Effective May 1, 1998,  the Trust issued one new series of shares,  the Janus
   Aspen Growth and Income Portfolio.  Janus Capital invested $10,000 of initial
   seed capital in each class of the Portfolio.

   The  following  accounting  policies have been  consistently  followed by the
   Trust and are in conformity with accounting  principles generally accepted in
   the investment company industry.

   INVESTMENT VALUATION
   Securities  are  valued  at the  closing  price  for  securities  traded on a
   principal  securities  exchange (U.S. or foreign) and on the NASDAQ  National
   Market.  Securities traded on over-the-counter  markets and listed securities
   for which no sales are  reported are valued at the latest bid price (or yield
   equivalent  thereof)  obtained  from one or more dealers  making a market for
   such securities or by a pricing service approved by the Trustees.  Short-term
   investments  maturing  within 60 days and all money market  securities in the
   Money Market  Portfolio  are valued at  amortized  cost,  which  approximates
   market value. Foreign securities are converted to U.S. dollars using exchange
   rates at the close of the New York Stock Exchange. When market quotations are
   not readily  available,  securities are valued at fair value as determined in
   good faith under procedures established by the Trustees.

   INVESTMENT TRANSACTIONS AND INVESTMENT INCOME
   Investment  transactions  are accounted for as of the date purchased or sold.
   Dividend income is recorded on the ex-dividend  date.  Certain dividends from
   foreign  securities  will be recorded as soon as the Trust is informed of the
   dividend if such information is obtained  subsequent to the ex-dividend date.
   Interest income is recorded on the accrual basis and includes amortization of
   discounts and  premiums.  Gains and losses are  determined on the  identified
   cost basis, which is the same basis used for federal income tax purposes.

   FORWARD CURRENCY TRANSACTIONS AND FUTURES CONTRACTS
   The Portfolios enter into forward currency  contracts in order to hedge their
   exposure  to changes  in foreign  currency  exchange  rates on their  foreign
   portfolio  holdings and to lock in the U.S.  dollar cost of firm purchase and
   sales  commitments  denominated  in foreign  currencies.  A forward  currency
   contract is a commitment  to purchase or sell a foreign  currency at a future
   date  at a  negotiated  forward  rate.  The  gain or loss  arising  from  the
   difference  between the U.S.  dollar cost of the  original  contract  and the
   value of the foreign  currency in U.S.  dollars upon closing such contract is
   included  in net  realized  gain or loss on  foreign  currency  transactions.
   Forward currency  contracts held by the Portfolios are fully covered by other
   securities, in possession at the Portfolio's custodian,  which are denoted in
   the  accompanying  Schedule  of  Investments.   The  market  value  of  these
   securities  is  evaluated  daily to ensure that it is equal to or exceeds the
   current market value of the corresponding forward currency contract.

   Currency gain and loss are also calculated on payables and  receivables  that
   are  denominated  in foreign  currencies.  The payables and  receivables  are
   generally related to security transactions and income.

                                          Janus Aspen Series / June 30, 1999  63
<PAGE>

Notes to | Financial Statements (continued)

   Futures  contracts  are marked to market daily,  and the variation  margin is
   recorded as an unrealized gain or loss. When a contract is closed, a realized
   gain or loss is  recorded  equal to the  difference  between  the opening and
   closing value of the contract.  Generally, open forward and futures contracts
   are marked to market (i.e.,  treated as realized and subject to distribution)
   for federal income tax purposes at fiscal year-end.

   Foreign-denominated  assets and forward  currency  contracts may involve more
   risks than domestic  transactions,  including:  currency risk,  political and
   economic  risk,  regulatory  risk and market  risk.  Risks may arise from the
   potential  inability  of a  counterparty  to meet the terms of a contract and
   from unanticipated  movements in the value of foreign currencies  relative to
   the U.S. dollar.

   The  Portfolios  may enter into futures  contracts and options on securities,
   financial indexes and foreign currencies, forward contracts and interest-rate
   swaps and swap-related products. The Portfolios intend to use such derivative
   instruments   primarily  to  hedge  or  protect  from  adverse  movements  in
   securities  prices,  currency  rates or  interest  rates.  The use of futures
   contracts and options may involve risks such as the  possibility  of illiquid
   markets or imperfect  correlation  between the value of the contracts and the
   underlying  securities,  or that the  counterparty  will fail to perform  its
   obligations.

   ADDITIONAL INVESTMENT RISK
   A portion of the Flexible Income and High-Yield Portfolios may be invested in
   lower-rated  debt  securities  that have a higher  risk of default or loss of
   value because of changes in the economy or in their respective industry.

   ESTIMATES
   The preparation of financial statements in conformity with generally accepted
   accounting  principles  requires management to make estimates and assumptions
   that affect the reported  amount of assets and  liabilities and disclosure of
   contingent assets and liabilities at the date of the financial statements and
   the reported  amounts of income and  expenses  during the  reporting  period.
   Actual results could differ from those estimates.

   DIVIDEND DISTRIBUTIONS AND EXPENSES
   Each  Portfolio,   except  the  Money  Market  Portfolio,   makes  semiannual
   distributions  of  substantially  all of its investment  income and an annual
   distribution  of its net  realized  capital  gains,  if any. The Money Market
   Portfolio makes daily  distributions of its income. All dividends and capital
   gains  distributions  from a Portfolio will be automatically  reinvested into
   additional shares of that Portfolio.

   Each Portfolio bears expenses incurred  specifically on its behalf as well as
   a portion of general  expenses based  generally on the relative net assets of
   each Portfolio.

   FEDERAL INCOME TAXES
   No  provision  for income  taxes is  included in the  accompanying  financial
   statements as the Portfolios intend to distribute to shareholders all taxable
   investment  income and realized gains and otherwise  comply with the Internal
   Revenue Code applicable to regulated investment companies.

2. INVESTMENT ADVISORY AGREEMENT AND OTHER TRANSACTIONS WITH AFFILIATES

   Investment  advisory fees for each of the eight equity Portfolios are payable
   to Janus Capital based upon annual rates of .75% of the first $300 million of
   average net assets,  .70% of the next $200 million of average net assets, and
   .65% of the  average  net assets in excess of $500  million.  However,  Janus
   Capital has voluntarily agreed to reduce each equity Portfolio's advisory fee
   to the extent that such fee exceeds the  effective  rate of the Janus  retail
   fund corresponding to such Portfolio.  The effective rate is the advisory fee
   calculated  by the  corresponding  retail  fund  as of the  last  day of each
   calendar quarter (expressed as an annual rate). Janus Aspen Growth Portfolio,
   Janus Aspen Aggressive  Growth  Portfolio,  Janus Aspen Capital  Appreciation
   Portfolio,  Janus Aspen International Growth Portfolio, Janus Aspen Worldwide
   Growth Portfolio,  Janus Aspen Balanced Portfolio,  Janus Aspen Equity Income
   Portfolio,  and Janus Aspen  Growth and Income  Portfolio  advisory  fees are
   reduced to the effective rates of Janus Fund,  Janus  Enterprise  Fund, Janus
   Twenty Fund,  Janus Overseas Fund, Janus Worldwide Fund, Janus Balanced Fund,
   Janus Equity Income Fund and Janus Growth and Income Fund, respectively.  The
   effective  rate for each  Portfolio  for the period ended June 30, 1999,  was
   .65%,  .69%,  .65%,  .66%,  .65%,  .67%,  .72%, and .66%,  respectively.  The
   Flexible  Income  Portfolio  is subject  to  advisory  fees  payable to Janus
   Capital  based upon annual rates of .65% of the first $300 million of average
   net assets  plus .55% of average  net assets in excess of $300  million.  The
   High-Yield  Portfolio's  advisory fee rate is payable at rates of .75% of the
   first $300  million of average  net assets plus .65% of average net assets in
   excess of $300  million.  The Money Market  Portfolio's  advisory fee rate is
   .25% of average net assets.  For additional  information on the specific fees
   for  the  Retirement  Shares,  please  refer  to  note  4  of  the  financial
   statements.

64  Janus Aspen Series / June 30, 1999
<PAGE>

   Janus  Capital  has agreed to reduce its fee to the extent  normal  operating
   expenses  exceed 1% of the  average  net  assets of the  Flexible  Income and
   High-Yield  Portfolios and .50% of the average net assets of the Money Market
   Portfolio for a fiscal year.

   Janus Capital has agreed to continue these fee waivers and  reductions  until
   at least the next annual renewal of the advisory  contracts.  The participant
   administration  fee and distribution fee applicable to the Retirement  Shares
   are not included in these expense limits.

   Until at least the next  annual  renewal  of the  advisory  contracts,  Janus
   Capital has also agreed to reduce its fee to the extent that normal operating
   expenses  exceed  1.25% of the  average  net assets of the Equity  Income and
   Growth  and  Income  Portfolios.   The  participant  administration  fee  and
   distribution fee applicable to the Retirement Shares are not included in this
   expense limit.

   Officers and certain trustees of the Trust are also officers and/or directors
   of Janus Capital;  however,  they receive no compensation from the Trust.

   DST Systems,  Inc.  (DST),  an affiliate of Janus Capital through a degree of
   common  ownership,   provides  accounting  systems  to  the  Portfolios.  DST
   Securities,  Inc.,  a wholly  owned  subsidiary  of DST,  provides  brokerage
   services on certain portfolio transactions. Brokerage commissions paid to DST
   Securities,  Inc.  serve to reduce fees and expenses.  Brokerage  commissions
   paid, fees reduced and the net fees paid to DST for the period ended June 30,
   1999, are noted below:

<TABLE>
<CAPTION>
                                             DST Securities, Inc.  Portfolio Expense    DST Systems
Portfolio                                      Commissions Paid*       Reduction*          Costs
- ---------------------------------------------------------------------------------------------------
<S>                                                <C>                   <C>              <C>
Janus Aspen Growth Portfolio                       $4,494                $3,371           $5,748
Janus Aspen Aggressive Growth Portfolio                --                    --            9,089
Janus Aspen Capital Appreciation Portfolio             --                    --            6,380
Janus Aspen International Growth Portfolio             --                    --            8,022
Janus Aspen Worldwide Growth Portfolio                 --                    --            9,172
Janus Aspen Balanced Portfolio                         --                    --            9,097
Janus Aspen Equity Income Portfolio                    --                    --            5,721
Janus Aspen Growth and Income Portfolio                55                    41            5,556
Janus Aspen Flexible Income Portfolio                  --                    --            6,893
Janus Aspen High-Yield Portfolio                       --                    --            6,039
Janus Aspen Money Market Portfolio                     --                    --            4,874
- ---------------------------------------------------------------------------------------------------
</TABLE>
*The difference  between  commissions paid to DST Securities,  Inc. and expenses
reduced constituted commissions paid to an unaffiliated clearing broker.

                                          Janus Aspen Series / June 30, 1999  65
<PAGE>

Notes to | Financial Statements (continued)

3. FEDERAL INCOME TAX

   The  Portfolios  have  elected to treat  gains and losses on forward  foreign
   currency contracts as capital gains and losses.  Other foreign currency gains
   and losses on debt  instruments  are treated as  ordinary  income for federal
   income tax purposes  pursuant to Section 988 of the Internal Revenue Code. As
   of  December  31,  1998,  the net  capital  loss  carryovers  noted below are
   available to offset future  realized  capital gains and thereby reduce future
   taxable gains  distributions.  These  carryovers  expire between December 31,
   2005, and December 31, 2006.

   The  aggregate  cost  of  investments   and  the  composition  of  unrealized
   appreciation  and depreciation of investments for federal income tax purposes
   as of June 30, 1999, are also noted below.

<TABLE>
<CAPTION>
                                            Net Capital Loss     Federal Tax       Unrealized        Unrealized    Net Appreciation/
Portfolio                                      Carryovers            Cost         Appreciation     (Depreciation)    (Depreciation)
- ------------------------------------------------------------------------------------------------------------------------------------
<S>                                                            <C>               <C>               <C>               <C>
Janus Aspen Growth Portfolio                            --     $1,329,380,558    $  461,114,018    $ (13,674,912)    $   447,439,106
Janus Aspen Aggressive Growth Portfolio                 --        993,810,834       415,023,526      (36,537,315)        378,486,211
Janus Aspen Capital Appreciation Portfolio    $(3,876,042)        221,649,236        38,338,225       (4,578,808)         33,759,417
Janus Aspen International Growth Portfolio    (16,186,634)        317,283,686        94,446,973      (10,599,856)         83,847,117
Janus Aspen Worldwide Growth Portfolio        (71,839,828)      2,677,094,815     1,185,064,324     (110,205,421)      1,074,858,903
Janus Aspen Balanced Portfolio                 (1,222,295)      1,403,730,166       263,201,489      (41,224,674)        221,976,815
Janus Aspen Equity Income Portfolio                     --         12,557,145         3,875,176         (360,310)          3,514,866
Janus Aspen Growth and Income Portfolio           (94,424)         23,273,831         3,024,958         (338,525)          2,686,433
Janus Aspen Flexible Income Portfolio                   --        169,745,562           993,823       (4,877,104)        (3,883,281)
Janus Aspen High-Yield Portfolio                  (13,866)          2,656,524            23,194         (136,605)          (113,411)
Janus Aspen Money Market Portfolio                      --         52,548,627                --                --                 --
- ------------------------------------------------------------------------------------------------------------------------------------
</TABLE>

4. EXPENSES

   The  Portfolios'   expenses  may  be  reduced   through   expense   reduction
   arrangements.  Those arrangements  include the use of broker commissions paid
   to DST Securities,  Inc. and uninvested cash balances  earning  interest with
   the  Portfolios'  custodian.  The Statements of Operations  reflect the total
   expenses  before any offset,  the amount of the offset and the net  expenses.
   The expense ratios listed in the Financial  Highlights reflect expenses prior
   to any expense offset (gross  expense  ratio) and after expense  offsets (net
   expense ratio).

   Janus Aspen  Series  Retirement  Shares  incur a pro rata share of  operating
   expenses. In addition,  the Retirement Shares pay a distribution fee of up to
   .25% of average net assets and a participant administration fee of up to .25%
   of average net assets.

66  Janus Aspen Series / June 30, 1999
<PAGE>

5. EXPENSE RATIOS

   Listed below are the gross  expense  ratios for the various  Portfolios  that
   would be in  effect,  absent  the waiver of  certain  fees  and/or  voluntary
   reduction of the  adviser's fee to the  effective  rate of the  corresponding
   Janus retail fund.  Expense  ratios are  annualized for all periods less than
   one year.

   For the six months ended June 30, 1999 (unaudited)
   or through each fiscal year or period ended December 31

<TABLE>
<CAPTION>
                                                               Institutional Shares                          Retirement Shares
- ------------------------------------------------------------------------------------------------------    --------------------------
Portfolio                                     1999      1998      1997      1996      1995       1994     1999      1998     1997(2)
<S>                                           <C>    <C>       <C>       <C>       <C>        <C>         <C>    <C>         <C>
Janus Aspen Growth Portfolio                  0.70%     0.75%     0.78%     0.83%     0.98%      1.23%    1.22%     1.25%    1.28%
Janus Aspen Aggressive Growth Portfolio       0.73%     0.75%     0.78%     0.83%     0.93%      1.14%    1.24%     1.26%    1.34%
Janus Aspen Capital Appreciation Portfolio    0.82%     0.97%  2.19%(2)       N/A       N/A        N/A    1.27%     1.49%    2.66%
Janus Aspen International Growth Portfolio    0.90%     0.95%     1.08%     2.21%     3.57%   4.67%(5)    1.38%     1.44%    1.57%
Janus Aspen Worldwide Growth Portfolio        0.85%     0.74%     0.81%     0.91%     1.09%      1.49%    1.39%     1.24%    1.32%
Janus Aspen Balanced Portfolio                0.71%     0.74%     0.83%     1.07%     1.55%      1.74%    1.20%     1.26%    1.33%
Janus Aspen Equity Income Portfolio           1.65%     1.86%  5.75%(2)       N/A       N/A        N/A    2.16%     2.36%    6.19%
Janus Aspen Growth and Income Portfolio       1.53%  3.06%(1)       N/A       N/A       N/A        N/A    2.03%  3.53%(1)      N/A
Janus Aspen Flexible Income Portfolio         0.76%     0.73%     0.75%     0.84%     1.07%      1.35%    1.24%     1.24%    1.23%
Janus Aspen High-Yield Portfolio              5.35%     2.11%     3.27%  6.29%(3)       N/A        N/A    5.85%     2.61%    3.42%
Janus Aspen Money Market Portfolio            0.55%     0.34%     0.55%     0.78%  1.07%(4)        N/A    1.05%     0.84%    1.10%
- ------------------------------------------------------------------------------------------------------------------------------------
</TABLE>

(1) Period May 1, 1998, (inception) to December 31, 1998.
(2) Period May 1, 1997, (inception) to December 31, 1997.
(3) Period May 1, 1996, (inception) to December 31, 1996.
(4) Period May 1, 1995, (inception) to December 31, 1995.
(5) Period May 2, 1994, (inception) to December 31, 1994.

                                          Janus Aspen Series / June 30, 1999  67
<PAGE>

Explanations of | Charts, Tables and Financial Statements

1. PERFORMANCE OVERVIEWS

   When comparing the  performance  of a Portfolio  with an index,  keep in mind
   that  market  indexes  do not  include  brokerage  commissions  that would be
   incurred if you purchased the individual  securities in the index.  They also
   do not include taxes payable on dividends and interest or operating  expenses
   incurred if you maintained a Portfolio invested in the index.

   Average  annual  total  returns are also quoted for each class of  Portfolio.
   Average  annual total return is calculated by taking the growth or decline in
   value of an  investment  over a period  of time,  including  reinvestment  of
   dividends  and   distributions,   then  calculating  the  annual   compounded
   percentage  rate that would  have  produced  the same  result had the rate of
   growth been constant throughout the period.

2. SCHEDULES OF INVESTMENTS

   Following the performance  overview section is each  Portfolio's  Schedule of
   Investments.  This schedule reports the industry  concentrations and types of
   securities  held in each  Portfolio on the last day of the reporting  period.
   Securities are usually listed by type (common stock,  corporate  bonds,  U.S.
   government  obligations,  etc.)  and  by  industry  classification  (banking,
   communications, insurance, etc.).

   The  market  value  of each  security  is  quoted  as of the  last day of the
   reporting period.  The value of securities  denominated in foreign currencies
   is converted into U.S. dollars.

   Portfolios  that  invest in  foreign  securities  also  provide a summary  of
   investments  by country.  This summary  reports the  Portfolio's  exposure to
   different  countries by providing the  percentage  of securities  invested in
   each country.

2A. FORWARD CURRENCY CONTRACTS

   A table listing forward currency contracts follows each Portfolio's  Schedule
   of Investments (if applicable).  Forward currency contracts are agreements to
   deliver or receive a preset  amount of  currency  at a future  date.  Forward
   currency  contracts  are used to hedge against  foreign  currency risk in the
   Portfolio's long-term holdings.

   The table provides the name of the foreign  currency,  the settlement date of
   the contract,  the amount of the contract,  the value of the currency in U.S.
   dollars and the amount of unrealized  gain or loss.  The amount of unrealized
   gain or loss reflects the change in currency exchange rates from the time the
   contract was opened to the last day of the reporting period.

3. STATEMENT OF OPERATIONS

   This statement details the Portfolios' income,  expenses, gains and losses on
   securities and currency  transactions,  and  appreciation  or depreciation of
   current Portfolio holdings.

   The first section in this statement,  titled "Investment Income," reports the
   dividends  earned  from  stocks and  interest  earned  from  interest-bearing
   securities in the Portfolio.

   The next section  reports the expenses  and expense  offsets  incurred by the
   Portfolios,  including  the  advisory  fee  paid to the  investment  adviser,
   transfer agent fees, shareholder servicing expenses, and printing and postage
   for mailing statements, financial reports and prospectuses.

   The last section  lists the  increase or decrease in the value of  securities
   held in the  Portfolios.  Portfolios  realize a gain (or loss) when they sell
   their position in a particular security.  An unrealized gain (or loss) refers
   to the change in net  appreciation or  depreciation of the Portfolios  during
   the period.  "Net  Gain/(Loss) on Investments" is affected both by changes in
   the market  value of  Portfolio  holdings  and by gains (or losses)  realized
   during the reporting period.

68  Janus Aspen Series / June 30, 1999
<PAGE>

4. STATEMENT OF ASSETS AND LIABILITIES

   This  statement  is often  referred to as the  "balance  sheet." It lists the
   assets and  liabilities  of the  Portfolios  on the last day of the reporting
   period.

   The  Portfolios'  assets are calculated by adding the value of the securities
   owned, the receivable for securities sold but not yet settled, the receivable
   for  dividends  declared  but not  yet  received  on  stocks  owned,  and the
   receivable  for Portfolio  shares sold to investors but not yet settled.  The
   Portfolios' liabilities include payables for securities purchased but not yet
   settled,  Portfolio  shares  redeemed but not yet paid, and expenses owed but
   not yet paid. Additionally, there may be other assets and liabilities such as
   forward currency contracts.

   The last line of this  statement  reports the net asset value (NAV) per share
   on the last day of the reporting period for each class of the Portfolio.  The
   NAV is  calculated  by dividing  the  Portfolios'  net assets  (assets  minus
   liabilities) by the number of shares outstanding.

5. STATEMENT OF CHANGES IN NET ASSETS

   This statement reports the increase or decrease in the Portfolios' net assets
   during  the  reporting  period.  Changes  in the  Portfolios'  net assets are
   attributable to investment operations,  dividends,  distributions and capital
   share  transactions.  This is important to investors because it shows exactly
   what caused the Portfolios' net asset size to change during the period.

   The first section summarizes the information from the Statement of Operations
   regarding   changes  in  net  assets  due  to  the   Portfolios'   investment
   performance.  The  Portfolios'  net  assets  may also  change  as a result of
   dividend and capital gains  distributions to investors.  If investors receive
   their  dividends  in cash,  money is taken  out of the  Portfolio  to pay the
   distribution.  If investors  reinvest their  dividends,  the  Portfolios' net
   assets will not be affected.  If you compare each  Portfolio's  "Net Decrease
   from  Dividends  and   Distributions"   to  the  "Reinvested   dividends  and
   distributions,"  you'll notice that dividend  distributions had little effect
   on each  Portfolio's  net  assets.  This is  because  the  majority  of Janus
   investors reinvest their distributions.

   The reinvestment of dividends is included under "Capital Share Transactions."
   "Capital  Shares" refers to the money investors  contribute to the Portfolios
   through purchases or withdrawal via redemptions.  Each Portfolio's net assets
   will  increase and decrease in value as investors  purchase and redeem shares
   from a Portfolio.

   The section  entitled "Net Assets  Consist of" breaks down the  components of
   the Portfolios' net assets. Because Portfolios must distribute  substantially
   all  earnings,  you'll  notice  that a  significant  portion of net assets is
   shareholder capital.

6. FINANCIAL HIGHLIGHTS

   This schedule  provides a per-share  breakdown of the components  that affect
   the net asset value (NAV) for  current  and past  reporting  periods for each
   class of the  Portfolio.  Not only does this  table  provide  you with  total
   return, it also reports total  distributions,  asset size, expense ratios and
   portfolio turnover rate.

   The first line in the table  reflects  the NAV per share at the  beginning of
   the reporting  period.  The next line reports the net  investment  income per
   share,  which  comprises  dividends and interest  income earned on securities
   held by the  Portfolios.  Following  is the  total  of  gains,  realized  and
   unrealized.  Dividends and distributions are then subtracted to arrive at the
   NAV per share at the end of the period.

   Also included are the expense  ratios,  or the  percentage of net assets that
   was used to cover operating  expenses during the period.  Expense ratios vary
   across the Portfolios for a number of reasons,  including the  differences in
   management fees, average  shareholder account size, the frequency of dividend
   payments  and  the  extent  of  foreign  investments,  which  entail  greater
   transaction costs.

   The   Portfolios'   expenses   may  be  reduced   through   expense-reduction
   arrangements.  These arrangements  include the use of brokerage  commissions,
   uninvested cash balances earning  interest or balance credits.  The Statement
   of Operations  reflects total expenses before any such offset,  the amount of
   offset and the net expenses.

                                          Janus Aspen Series / June 30, 1999  69
<PAGE>

Explanations of | Charts, Tables and Financial Statements (continued)

   The expense ratios listed in the Financial  Highlights reflect total expenses
   both prior to any expense offset and after the offsets.

   Expense   ratios  prior  to  any  expense   offset  are  part  of  disclosure
   requirements  imposed  in  1996.  Years  prior  to 1995 do not  reflect  this
   information.

   The ratio of net  investment  income  summarizes the income earned divided by
   the average  net assets of a Portfolio  during the  reporting  period.  Don't
   confuse this ratio with a Portfolio's  yield. The net investment income ratio
   is not a true  measure of a  Portfolio's  yield  because it doesn't take into
   account the dividends distributed to the Portfolio's investors.

   The next ratio is the portfolio  turnover rate, which measures the buying and
   selling  activity in a  Portfolio.  Portfolio  turnover is affected by market
   conditions, changes in the size of a Portfolio, the nature of the Portfolio's
   investments and the investment  style of the portfolio  manager.  A 100% rate
   implies that an amount  equal to the value of the entire  Portfolio is turned
   over in a year;  a 50% rate means  that an amount  equal to the value of half
   the Portfolio is traded in a year; and a 200% rate means that an amount equal
   to the value of the Portfolio is sold every six months.

Year 2000 | Discussion (unaudited)

   Preparing  for Year  2000 is a high  priority  for Janus  Capital,  which has
   established  a  dedicated  group to address  this  issue.  Janus  Capital has
   devoted  considerable  internal resources and has engaged one of the foremost
   experts in the field to help achieve Year 2000 readiness.  Janus Capital does
   not anticipate that Year  2000-related  issues will have a material impact on
   its ability to continue to provide  the  Portfolios  with  service at current
   levels;  however,  Janus Capital cannot make any assurances that the steps it
   has taken to ensure Year 2000  readiness  will be  successful.  In  addition,
   there can be no assurance that Year 2000 issues will not affect the companies
   in which the Portfolios invest or worldwide markets and economies.

70  Janus Aspen Series / June 30, 1999
<PAGE>

                                  [BLANK PAGE]

                                          Janus Aspen Series / June 30, 1999  71
<PAGE>


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