THORNBURG INVESTMENT TRUST
N-30D, 1998-05-29
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Thornburg Florida Intermediate Municipal Fund

Fund facts. . . as of 3/31/98
                                        Thornburg
                                  Florida Intermediate    
                                      Municipal Fund
                                         A Shares
SEC Yield                                   4.19%
Taxable Equiv. Yields                       6.95%
NAV                                         $12.22
Max. Offering Price                         $12.66

Total returns. . . as of 3/31/98   
(Annual Average - After Subtracting
Maximum Sales Charge)

One Year                                    3.94%
Three Year                                  5.28%
Since Inception                             4.50%    
Inception Date
(2/1/94)

The taxable  equivalent  yield assumes a 39.6%  marginal  federal tax rate and a
0.2% intangible tax.
The  investment  return and  principal  value of an  investment in the fund will
fluctuate so that, when redeemed, an investor's shares may be worth more or less
than their original  cost.  Maximum sales charge of the Fund's Class A Shares is
3.50%.  The Fund's Class C Shares were  converted to Class A Shares on April 30,
1996. The date quoted  represent past  performance and may not be construed as a
guarantee of future results.


Dear Fellow Shareholder,
I am  pleased to  present  the  Semi-Annual  Report  for the  Thornburg  Florida
Intermediate  Municipal  Fund for the 6 months  ending March 31,  1998.  The net
asset value  increased 8 cents per share to $12.22.  If you were with us for the
entire period, you received dividends of 27.8 cents per share. If you reinvested
your  dividends,  you  received  28.1 cents per share.  Your  Thornburg  Florida
Intermediate  Municipal Fund currently holds over 50 municipal  obligations from
Florida  Municipal  borrowers.  Approximately  78% of the  bonds  are rated A or
better  by one of the  major  rating  agencies.  As you know,  we  "ladder"  the
maturities  of the bonds in your fund so that some bonds are scheduled to mature
at par during each of the coming  years.  Today,  your fund's  weighted  average
maturity  is  approximately  8.0  years,  and we always  keep it below 10 years.
Percentages of the portfolio maturing in the coming years are summarized below:










Over the last 6 months your average portfolio  maturity has increased a bit. The
supply of new  municipal  bonds has  increased  considerably  over the levels of
recent  years.  With a better  selection  of bonds to choose  from,  we directed
portfolio  cash flow and new money into the middle  maturity  range of your bond
ladder.  Today  we are  managing  the  portfolio  to keep the  average  maturity
approximately  where it is. We will stick with this  approach if interest  rates
remain stable or decrease.  If bond yields  increase,  we will likely extend the
average portfolio  maturity to approximately nine years. This would permit us to
increase  our income  yields if higher  yields are  available.  Today there is a
great deal of discussion  about the Federal Reserve and the future  direction of
the U.S. economy and interest rates. The U.S. economy is extremely  strong,  and
tax receipts are off the charts.  The federal budget will show a surplus in 1998
of between $50 and $100 billion,  the first surplus since 1969! Most states will
also have budget  surpluses.  In the midst of all this economic  strength,  I am
impressed by the degree to which bond investments have outperformed money market
investments  in the  last 5 years.  Look at these  average  return  numbers  for
various  categories  of bond mutual  funds and money market funds for the 5 year
period ending March 31, 1998:









Recall that in the spring of 1993 the fed funds rate was 3%.  Today it is 5.31%.
Assets in money market funds* and bank CDs* have increased by almost $1 trillion
since  then,  while  American  investors'  holdings of bonds and bond funds have
actually decreased.  While all savers would prefer to have the interest rates of
the 1980's,  it is noteworthy that (1) bond fund  performance has been very good
relative to money market and CD performance  even in an environment of generally
rising  short term  interest  rates,  and (2) many  economists  are  calling for
generally lower interest rates in the years ahead, even if Mr. Greenspan happens
to raise short interest rates temporarily to cool the economy later this year. I
believe  investors  should  seriously  consider  moving assets from money market
investments  to bonds if higher short term interest  rates and lower bond prices
materialize  in the coming months.  Over the years,  our practice of laddering a
diversified  portfolio of short and  intermediate  maturity  municipal bonds has
allowed  your fund to perform  well  above  average  in  varying  interest  rate
environments. Your fund has earned Morningstar's** coveted 5-star overall rating
for  risk  adjusted  performance.  I would  like to  attribute  this to  capable
execution of a sensible  investment  strategy over time. Thank you for investing
in Thornburg Florida Intermediate Municipal Fund. Sincerely,

Brian J. McMahon                              
Portfolio Manager

         2 years = 14%         year 2 = 14%    
    2 to 4 years = 15%         year 4 = 29%
    4 to 6 years = 10%         year 6 = 39%  
    6 to 8 years = 20%         year 8 = 59%
   8 to 10 years = 9%          year 10 = 68%    
  10 to 12 years = 16%         year 12 = 84%
  12 to 14 years = 6%          year 14 = 90%   
  14 to 16 years = 9%          year 16 = 99%
 

Average annual return
5 Years Ending 3/31/98
  Taxable Money Mkt. Fund            4.4%  (before income taxes) 
  Avg. Fund: Intmdt. Corp. Debt      6.2%  (before income taxes) 
  Avg. Fund: Intmdt. U.S. Gvt. Debt  5.6%  (before income taxes)
  Municipal Money Mkt. Fund          2.8%  (national portfolios)
  Avg. Fund: Short Muni Bond         4.4%  (national portfolios) 
  Avg. Fund: Intmdt. Muni Bond       5.5%  (national portfolios)
(source: The Wall Street Journal/Lipper)

ASSETS

Investments at value (cost $26,450,987)                            $  27,455,655
Cash                                                                      16,270
Receivable for fund shares sold                                           63,303
Interest receivable                                                      439,001
Prepaid expenses and other assets                                         14,839

Total Assets                                                          27,989,068

LIABILITIES

Payable for investments purchased                                        701,944
Accounts payable and accrued expenses                                     48,256
Payable to investment advisor                                             25,510
Dividends payable                                                         57,214

Total Liabilities                                                        832,924

NET ASSETS                                                         $  27,156,144

NET ASSET VALUE:

Class A Shares:
Net asset value and redemption price per share ($27,156,144
applicable to 2,223,101 shares of beneficial interest
outstanding - Note 4)                                              $       12.22

Maximum sales charge, 3.50 % of offering
price (3.63% of net asset value per share)                                  0.44
Maximum Offering Price Per Share                                   $       12.66


See notes to unaudited financial statements.


INVESTMENT INCOME:
Interest income (net of premium amortized of $54,202)     $   711,081

EXPENSES:
Investment advisory fees (Note 3)                              64,224
Administration fees (Note 3)                                   16,056
Service fees (Note 3)                                          28,666
Transfer agent fees                                             9,804
Custodian fees                                                 10,565
Professional fees                                               5,026
Trustee Feess                                                     333
Other expenses                                                  4,846

Total Expenses                                                139,520

Less:
Expenses waived by investment advisor (Note 3)                (14,584)

Net Expenses                                                  124,936

Net Investment Income                                         586,145

REALIZED AND UNREALIZED GAIN
ON INVESTMENTS (NOTE 5)
Net Realized gain on investments sold                          13,146
Increase in unrealized appreciation (depreciation) of inve    160,234

Net Realized and Unrealized
Gain on Investments                                           173,380

Net Increase in Net Assets Resulting From Operations      $   759,525

See notes to unaudited financial statements.


                                           Six Months Ended      Year Ended
                                            March 31, 1998   September 30, 1997

INCREASE (DECREASE) IN
NET ASSETS FROM:

OPERATIONS:
Net investment income                               $  586,145   $ 1,081,089
Net realized gain (loss) on investments                 13,146       (12,081)
Increase in unrealized appreciation of investments     160,234       472,555

Net Increase in Assets Resulting from Operations       759,525     1,541,563

DIVIDENDS TO SHAREHOLDERS:
From net investment income
Class A Shares                                        (586,145    (1,081,089)


FUND SHARE TRANSACTIONS - (Note 4):
Class A Shares                                       2,319,916     4,701,115

Net Increase in Net Assets                           2,493,296     5,161,589


NET ASSETS:

Beginning of period                                 24,662,848    19,501,259

End of period                                     $ 27,156,144  $ 24,662,848

See notes to unaudited financial statements.

Note 1 - Organization
Thornburg  Florida  Intermediate  Municipal  Fund (the  "Fund"),  is a series of
Thornburg  Investment  Trust  (the  "Trust").   The  Trust  is  organized  as  a
Massachusetts business trust under a Declaration of Trust dated June 3, 1987 and
is registered as a diversified, open-end management investment company under the
Investment  Company Act of 1940, as amended.  The Trust is currently issuing six
series  of shares  of  beneficial  interest  in  addition  to those of the Fund:
Thornburg  New  Mexico   Intermediate   Municipal   Fund,   Thornburg  New  York
Intermediate  Municipal Fund, Thornburg  Intermediate  Municipal Fund, Thornburg
Limited  Term U.S.  Government  Fund,  Thornburg  Limited  Term  Income Fund and
Thornburg  Value Fund.  Each series is  considered  to be a separate  entity for
financial  reporting and tax  purposes.  The Fund's  investment  objective is to
obtain as high a level of current  income  exempt from Federal  income tax as is
consistent with the preservation of capital.  The Fund currently offers only one
class of shares of beneficial  interest,  Class A shares. On April 30, 1996, all
existing  Class  C  shares  were  converted  at net  asset  value,  without  the
imposition  of a deferred  sales  charge,  into Class A shares of an  equivalent
value.The Fund no longer offers Class B or Class C shares.  Each class of shares
of a Fund  represents an interest in the same  portfolio of  investments  of the
Fund,  except  that (i) Class A shares  are sold  subject to a  front-end  sales
charge  collected at the time the shares are  purchased  and bear a service fee,
(ii) Class C shares were sold at net asset value  without a sales  charge at the
time of purchase,  but were subject to a service fee and a distribution fee, and
(iii)  the   respective   classes  have   different   reinvestment   privileges.
Additionally,  each Fund may allocate among its classes certain expenses, to the
extent allowable to specific classes,  including transfer agent fees, government
registration  fees,  certain printing and postage costs, and  administrative and
legal expenses. Class specific expenses of the Fund were limited to distribution
fees, administration fees and certain transfer agent expenses.

Note 2 - Significant  Accounting Policies Significant accounting policies of the
Fund are as follows:
Valuation of Investments:  In determining net asset value,  the Fund utilizes an
independent pricing service approved by the Trustees. Debt investment securities
have a primary market over the counter and are valued on the basis of valuations
furnished  by  the  pricing  service.   The  pricing  service  values  portfolio
securities at quoted bid prices or the yield equivalents when quotations are not
readily available. Securities for which quotations are not readily available are
valued at fair value as  determined  by the pricing  service using methods which
include consideration of yields or prices of municipal obligations of comparable
quality, type of issue, coupon,  maturity,  and rating;  indications as to value
from dealers and general market conditions. The valuation procedures used by the
pricing service and the portfolio  valuations  received by the Fund are reviewed
by the  officers of the under the Trust  general  supervision  of the  Trustees.
Short-term obligations having remaining maturities of 60 days or less are valued
at amortized cost, which approximates market value.  Federal Income Taxes: It is
the policy of the Fund to comply with the  provisions  of the  Internal  Revenue
Code applicable to "regulated investment companies" and to distribute all of its
taxable  (if  any) and tax  exempt  income  to its  shareholders.  Therefore  no
provision for Federal income tax is required. Dividends paid by the Fund for the
six months ended March 31, 1998 represent  exempt  interest  dividends which are
excludable by  shareholders  from gross income for Federal  income tax purposes.
When-Issued  and  Delayed  Delivery   Transactions:   The  Fund  may  engage  in
when-issued or delayed delivery transactions.  To the extent the Fund engages in
such  transactions,  it  will  do so for  the  purpose  of  acquiring  portfolio
securities  consistent with its investment objectives and not for the purpose of
investment  leverage or to speculate on interest rate  changes.  At the time the
Fund makes a commitment to purchase a security on a when-issued  basis,  it will
record the transaction and reflect the value in determining its net asset value.
When effecting such transactions,  assets of the Fund of an amount sufficient to
make payment for the portfolio  securities to be purchased will be segregated on
the Fund's records on the trade date.  Securities  purchased on a when-issued or
delayed  delivery  basis  do  not  earn  interest  until  the  settlement  date.
Dividends:  Net investment income of the Fund is declared daily as a dividend on
shares for which the Fund has received  payment.  Dividends are paid monthly and
are reinvested in additional  shares of the Fund at net asset value per share at
the close of business on the  dividend  payment  date,  or at the  shareholder's
option,  paid in cash.  Net  capital  gains,  to the extent  available,  will be
distributed annually.  General:  Securities  transactions are accounted for on a
trade date basis.  Interest  income is accrued as earned.  Premiums and original
issue  discounts on  securities  purchased  are  amortized  over the life of the
respective securities. Realized gains and losses from the sale of securities are
recorded on an identified  cost basis.  Use of  Estimates:  The  preparation  of
financial   statements,   in  conformity  with  generally  accepted   accounting
principles,  requires  management to make estimates and assumptions  that affect
the reported  amounts of assets and liabilities and the disclosure of contingent
assets and liabilities at the date of the financial  statements and the reported
amounts of  increases  and  decreases in net assets from  operations  during the
reporting period. Actual results could differ from those estimates.

Note 3 - Investment Advisory Fee and Other Transactions With Affiliates
Pursuant to an investment advisory agreement, Thornburg Management Company, Inc.
(the "Adviser") serves as the investment adviser and performs services for which
the fees are  payable at the end of each month.  For the six months  ended March
31,  1998,  these fees were  payable at annual  rates  ranging from 1/2 of 1% to
11/40 of 1% of the average daily net assets of the Fund  depending on the Fund's
asset size.  The Fund also has an  Administrative  Services  Agreement  with the
Adviser,  whereby the Adviser will perform certain  administrative  services for
the shareholders of each class of the Fund's shares,  and for which fees will be
payable  at an annual  rate of up to 1/8 of 1% of the  average  daily net assets
attributable  to each class of shares.  For the six months ended March 31, 1998,
the Adviser  voluntarily waived certain operating expenses amounting to $14,584.
The Fund has an  underwriting  agreement with Thornburg  Securities  Corporation
(the  "Distributor"),  which acts as the Distributor of Fund shares. For the six
months ended March 31, 1998,  the  Distributor  earned  commissions  aggregating
$5,730 from the sale of Class A shares.  Pursuant to a Service Plan,  under Rule
12b-1 of the  Investment  Company  Act of 1940,  the Fund may  reimburse  to the
Adviser an amount not to exceed  .25 of 1% per annum of the  average  net assets
attributable  to each  class of  shares  of the Fund  for  payments  made by the
Adviser to securities dealers and other financial institutions to obtain various
shareholder  related  services.  The  Adviser  may  pay  out  of its  own  funds
additional expenses for distribution of the Fund's shares.  Certain officers and
trustees  of the Trust are also  officers  and/or  directors  of the Adviser and
Distributor. The compensation of unaffilliated trustees is borne by the Trust.


Note  4 - Shares of Beneficial Interest
At March 31,  1998  there  were an  unlimited  number  of  shares of  beneficial
interest authorized, and capital paid-in aggregated $26,290,569. Transactions in
shares of beneficial interest were as follows:

                              Six Months Ended               Year Ended 
                               March 31, 1998            September 30, 1997
Class A Shares               Shares       Amount        Shares       Amount
Shares sold                  1,443,366 $ 17,661,641    2,459,475 $ 29,388,952
Shares issued to shareholders in
reinvestment of distribution    14,558      177,641       38,451      460,678
Shares repurchased          (1,267,173) (15,519,366)  (2,107,254) (25,148,515)

Net Increase                   190,751 $  2,319,916      390,672 $  4,701,115


Note 5 - Securities Transactions
For the six  months  ended  March  31,  1998,  the  Fund had  purchase  and sale
transactions  (excluding short-term  securities) of $19,222,948 and $16,550,255,
respectively.  At March 31, 1998, net unrealized appreciation of investments was
$1,004,668,  resulting from $1,015,463 gross unrealized appreciation and $10,795
gross unrealized  depreciation.  Accumulated net realized losses from securities
transactions  included in net assets at March 31, 1998 aggregated $139,093.  For
Federal income tax purposes, the Fund has realized capital loss carryforwards of
$139,124  from prior fiscal years  available to offset future  realized  capital
gains.  To the  extent  that such  carryforwards  are  used,  no  capital  gains
distributions will be made. The carryforwards  expire as follows:  September 30,
2003 - $90,253, September 30, 2004 - $13,904 and September 30, 2005 - $34,967.

<TABLE>
<CAPTION>
                                              
                                                                                   
<S>                                         <C>         <C>         <C>         <C>       <C> 
                                                                                       Period from Sept. 1 (a)-
                                      Six Month Ended        Year Ended September 30,   September 30,
                                       March 31, 1998    1997       1996       1995       1994


CLASS A SHARES:
Net asset value, beginning of period         $12.14     $11.88     $11.83     $11.54     $12.06

Income from investment operations:
   Net investment income                       0.28       0.56       0.57       0.63       0.40
   Net realized and unrealized
   gain (loss) on investments                  0.08       0.26       0.05       0.29      (0.52)

Total from investment operations               0.36       0.82       0.62       0.92      (0.12)
Less dividends from:
   Net investment Income                      (0.28)     (0.56)     (0.57)     (0.63)     (0.40)

Change in net asset value                      0.08       0.26       0.05       0.29      (0.52)

Net asset value, end of period               $12.22     $12.14     $11.88     $11.83     $11.54

TOTAL RETURNS                                  2.97%      7.04%      5.37%      8.22%     (0.95%)

RATIOS/SUPPLEMENTAL DATA
Ratios to average net asset:
   Net investment income                       4.56%(c)   4.65%      4.80%      5.41%      5.09%(c)
   Expenses, after expense reductions          0.97%(c)   0.83%      0.61%      0.38%      0.25%(c)
   Expenses, before expense reductions         1.09%(c)   1.13%      1.34%      1.44%      1.95%(c)

Portfolio turnover rate                       64.03%     51.48%     77.12%     89.60%     19.94%

Net assets at end of period (000)           $27,156     $24,663    $19,501     $14,822    $8,076

<FN>
(a) Commencement of operations.
(b) Sales loads are not reflected in computing total return, which is not
    annualized for period less thatn one year.
(c) Annualized
</FN>
</TABLE>

<TABLE>

CUSIPS:  Class A - 885-215-707
NASDAQ Symbols:  Class A - THFLX

<CAPTION>
Principal                                                                                                 Credit Ratingt
Amount       Issuer-Description                                                                            Moody's/S&P       Value

<S>          <C>                                                                                              <C>        <C> 
   720,000   Brevard County Tourist Development Tax Revenue, Series 1993, 6.325% due 3/1/03
             (Florida Marlins Training Facilities)                                                               NR/NR    $757,253
   400,000   Broward County Educational Facilities Authority, Series 1994, 5.60% due 4/1/04 
             (Nova Southeastern University Project; Guaranteed: Connie Lee)                                     NR/AAA     427,028
 1,000,000   Broward County Florida Housing Finance Authority Refunding, Series A, 5.20% due 4/1/17             Aaa/NR   1,000,830
   570,000   Broward County Health Facilities Authority, 7.00% due 8/15/11 
             (North Beach Hospital Project; Insured: MBIA)                                                      Aaa/AAA    624,840
   510,000   Broward County Housing Finance Authority Home Mortgage Revenue, 0% due 4/1/14                      Aa3/BBB    104,616
   200,000   Cape Coral Special Obligation Wastewater Revenue, 5.625% due 7/1/00 
             (Green Area Project; Insured: FSA)                                                                 Aaa/AAA    207,218
   300,000   Cape Coral Special Obligation Wastewater Revenue, 5.75% due 7/1/01 (Green Area Project; In         Aaa/AAA    314,991
   150,000   Cape Coral Special Obligation Wastewater Revenue, 6.00% due 7/1/03 (Green Area Project; In         Aaa/AAA    162,225
   690,000   Cape Coral Special Obligation Wastewater Revenue, 6.10% due 7/1/05 
             (Green Area Project; Insured FSA)                                                                  Aaa/AAA    719,049
   425,000   Clearwater Florida Housing Authority Finance Revenue Refunding, 5.40% due 5/1/13                      NR/A    433,343
   900,000   Clermont  Water & Sewer Revenue Refunding,  5.00% due 12/1/00                                        NR/NR    921,132
   285,000   Dade County General Obligation,  7.00% due 10/1/06 (Insured: AMBAC)                                Aaa/AAA    336,192
   775,000   Dade  County   Guaranteed   Entitlement   Revenue,   9.75%  due  2/1/03 
             pre-refunded 2/1/00 @ 103 (Insured: AMBAC)                                                          Aaa/AAA   844,680
   230,000   Dade County Health Facilities Revenue - Catholic Health, 7.50% due 8/15/00 (LOC: Allied Irish Bank)   A1/NR   243,607
    57,000   Duval County Single Family Housing Revenue, 10.25% due 5/15/16                                      Aaa/AAA    57,706
   700,000   Escambia County Health Facilities,  Series A, 8.70% due 10/1/14 partially pre-refunded 10/01/98 
             (Baptist Hospital Project)                                                                           NR/BBB+   729,036 
    15,000   Escambia  County  Housing  Finance   Authority   Single  Family Mortgage,  Series C, 7.50% 
             due 10/1/12                                                                                           Aaa/NR    15,544
   165,000   Escambia Housing  Finance  Authority,  6.15% due 4/1/00  (Collateralized: GNMA)                       Aaa/NR   168,764
 1,000,000   Florida Housing Development  Authority,  6.25%  due 12/1/06  (Hammock's Place Project)                NR/AAA 1,045,590
   180,000   Florida Housing Finance Agency, 7.65% due 6/1/99 (Collateralized:  GNMA)                              Aaa/NR   183,749
  1,000,000  Florida Housing Finance Agency Multi Family Housing Revenue, Series 1983-F, 5.35% 
             due 12/1/05 mandatory put6/1/00
               (Insured: Connecticut General)                                                               NR/AA       1,011,620
   380,000     Florida Housing Finance Agency Revenue Bonds, 5.30% due 12/1/04 (Insured: AMBAC)           Aaa/AAA         394,216
   970,000     Florida Housing Finance Authority, Series 94-B, 5.70% due 10/1/24 mandatory put 10/1/04 (Plantation Colony Project;
               Collateralized: FNMA)                                                                       NR/AAA       1,044,593
   650,000     Florida Housing Finance Authority Multi Family Housing Revenue, 5.10% due 4/1/02put 4/1/02 (Park Colony Project;
                                                                                                       LOC: Mellon        663,370
   275,000     Florida State Board of Education, Series C, 6.90% due 6/1/99 (Escrowed to Maturity)        Aaa/AAA         279,180
   220,000     Florida State Board of Education, Series D, 6.20% due 5/1/07 (Insured: MBIA) (Escrowed t   226,336
   345,000     Florida State Certificates of Participation, 6.10% due 5/15/98 (Consolidated Equipment Financing Program Project)
                                                                                                             A/A+         345,969
   200,000     Florida State Department Corrections Certificates of Participation Okeechobee Correctional, 5.90% due 3/1/04
                                                                                                       (Insured: A        217,204
    95,000     Fort Myers Florida Improvement Revenue, 6.00% due 12/1/13 (Insured: ACA)                   Aaa/AAA          96,588
   370,000     Halifax Hospital Med Center Daytona Beach Health Care Facilities Revenue, Series A, 5.00% due 4/1/11 (Insured: ACA)
                                                                                                             NR/A         367,036
   365,000     Halifax Hospital Med Center Daytona Beach Health Care Facilities Revenue, Series A, 5.00% due 4/1/12 (Insured: ACA)
                                                                                                             NR/A         358,514
 1,000,000     Halifax Hospital Med Center Daytona Beach Health Care Facilities Revenue, Series A, 5.20% due 4/1/18
                                                                                                             NR/A         990,190
   300,000     Hernando County Industrial Development Revenue, 8.50% due 12/1/14 (Florida Crushed Stone NR/NRect)         343,056
 1,000,000     Hillsborough County Industrial Development Authority, 5.50% due 8/15/06 (University Community Hospital Inc.
               Project; Insured: MBIA)                                                                    Aaa/AAA       1,075,070
   355,000     Jacksonville Florida Housing Revenue Windermere Manor, Series A, 5.125% due 9/20/04 (Collateralized: GNMA)
                                                                                                           NR/AAA         365,320
   150,000     Jacksonville Health Facilities Industrial Development Revenue, 5.70% due 12/1/04 (National Benevolent Association
                                                                                                       Project) Ba        159,459
   100,000     Jacksonville Health Facilities Industrial Development Revenue, 6.00% due 12/1/09 (National Benevolent Association
                                                                                                       Project) Ba        108,526
   100,000     Jacksonville Health Facilities Industrial Development Revenue, 6.05% due 12/1/10 (National Benevolent Association
                                                                                                       Project) Ba        108,333
   600,000     Jacksonville Health Facilities Industrial Development Revenue, 8.00% due 12/1/15 (National Benevolent Association
                                                                                                       Project) Ba        702,456
   100,000     Jacksonville Loan Obligation Custody Receipts, 6.10% due 4/1/01 (Insured: MBIA)Aaa/AAA                     100,188
   250,000     Jacksonville Loan Obligation Water & Sewer Revenue, 5.30% due 4/1/99 (Insured: MBIA)       Aaa/AAA         250,325
 1,059,801     Lummus Housing Development Corp., 8.00% due 12/1/10 (Elderly Housing, Section 8 Project)     NR/NR       1,059,801
 2,500,000     Miami Dade County Florida Special Obligation, Subordinated Series C, 0% due 10/1/13 (Insured: MBIA)
                                                                                                          Aaa/AAA       1,129,875
   210,000     Mirimar Wastewater Improvement Assessment Revenue, 6.00% due 10/1/02 (Insured: FGIC)       Aaa/AAA         225,620
   845,000     Mirimar Wastewater Improvement Assessment Revenue, 6.25% due 10/1/05 (Insured: FGIC)       Aaa/AAA         942,462
    50,000     Okaloosa County Custody Receipts, 6.10% due 4/1/02 (Insured: MBIA)                         Aaa/AAA          50,094
   250,000     Orange County Housing Finance Authority, 6.10% due 10/1/05 (Collateralized: FNMA/GNMA) NR/AAA              260,800
   115,000     Osceola County Health Facilities Revenue, Series 1994, 5.75% due 5/1/04 (Evangelical Lutheran Good Samaritan
                                                                                                                         Project;
                                                                                                       Insured: AMAaa/AAA 123,775
   100,000     Osceola County Industrial Development Authority, 7.50% due 7/1/02 (Insured: AMBAC)         Aaa/AAA         108,286
   195,000     Palm Bay Lease Revenue Refunding, 6.40% due 9/1/04 (Florida Education & Research Foundat    Ba2/NR         203,172
   205,000     Palm Bay Lease Revenue Refunding, 6.50% due 9/1/05 (Florida Education & Research Foundat    Ba2/NR         214,795
   515,000     Palm Beach County Industrial Development Revenue, Series 1996, 6.10% due 12/1/07 (Lourdes-Noreen McKeen-Geriatric
                                                                                                                    Care Project;
               LOC: Allied Irish Bank)                                                                      NR/A+         567,092
   270,000     Palm Beach County Industrial Development Revenue, Series 1996, 6.20% due 12/1/08 (Lourdes-Noreen McKeen-Geriatric
                                                                                                                    Care Project;
               LOC: Allied Irish Bank)                                                                      NR/A+         299,287
   690,000     Pensacola Airport Revenue, 6.25% due 10/1/05                                               Aaa/AAA         760,380
   800,000     Pinellas County Educational Facility Authority Revenue, 8.00% due 2/1/11 (Clearwater Christian College Project)
                                                                                                            NR/NR         860,184
   500,000     Port St. Lucie Utility System Revenue, Series 1996-A, 0% due 9/1/07 (Insured: FGIC)        Aaa/AAA         338,010
   500,000     Seminole County School Board Certificates of Participation, 5.75% due 7/1/06 (Insured: M   Aaa/AAA         548,440
 1,000,000     South Broward Hospital District Revenue, 7.50% due 5/1/08 (Insured: AMBAC)                 Aaa/AAA       1,158,640
   100,000     St. Lucie County Florida Pollution Control, 3.85% due 1/1/26 put 4/1/98 (daily demand note)
               (Florida Power & Light Company Project)                                                  VMIG1/A1+         100,000

                                                             TOTAL INVESESTMENTS (Cost $26,450,987)               $    27,455,655

<FN>
                  See notes to unaudited financial statements.
               t  Credit ratings are unaudited

</FN>
</TABLE>

Thornburg Limited Term Municipal Fund - National Portfolio
LTMFX is a laddered portfolio of municipal  obligations from throughout the U.S.
The Fund has an average  maturity  of 5 years or less.  Thornburg  Limited  Term
Municipal Fund - California  Portfolio LTCAX, a single state companion portfolio
to LTMFX,  offers  California  investors double tax-free** yields in a laddered,
short
maturity portfolio.  The Fund has an average maturity of 5 years or less.
Thornburg Intermediate Municipal Fund
THIMX is a laddered portfolio of municipal obligations from throughout the U.S.
The Fund has an average maturity of 10 years or 
less.
Thornburg Florida Intermediate Municipal Fund
THFLX , a single state companion fund to THIMX, offers Florida investors a 
balanced approach to double tax-free** yields.  The Fund
has an average  maturity of 10 years or less.
Thornburg New Mexico Intermediate Municipal Fund
THNMX,  a single state  companion fund to THIMX,  offers New Mexico  investors a
balanced approach to double tax-free**  yields. The Fund has an average maturity
of 10 years or less.  Thornburg  Limited Term U.S.  Government  Fund LTUSX is an
open end mutual fund which invests in short to intermediate  obligations  issued
by the U.S. Government, its agencies or instrumentalities***.  It has an average
maturity of 5 years or less.  It is  particularly  suitable for your IRA,  Keogh
Plan, Pension
Plan, or Profit Sharing Plan.
Thornburg Limited Term Income Fund
THIFX is an open end mutual fund which invests in a wide variety of taxable, 
investment grade, short to intermediate obligations.
The Fund keeps a  weighted average maturity of 5 years or less.  It is also 
suitable for your IRA, Keogh Plan, Pension Plan, or
Profit Sharing Plan.
Thornburg Value Fund
Thornburg Global Value Fund
Thornburg New York Intermediate Municipal Fund

4        4        4        1,525    782     345      Muni Short


4        4        4        1,525    782     345      Muni Short


4        5        N/A      1,525    782     N/A      Muni Nat'l Int.

5        N/A      N/A      1,525    N/A     N/A      Muni Single St. Int.


4        4        N/A      1,525    782     N/A      Muni Single St. Int.


3        3        3        1,403    831     329      Short Gov't



4        3        N/A      1,403    831     N/A      Inter. Term Bd.





New, Not Yet Rated

SOURCE:  Morningstar  Advanced  Analytics for  Principia,  3/31/98.  Morningstar
proprietary  ratings are subject to change every month and are  calculated  from
the fund's 3-, 5- and 10- year average annual returns (when available) in excess
of 90-day  Treasury  bill returns with  appropriate  fee  adjustment  and a risk
factor that reflects fund performance below 90-day Treasury bill returns. 10% of
the funds in an investment category receive 5 stars, 22% receive 4 stars and 35%
receive 3 stars.  *Morningstar  ratings  only apply to a fund's  Class A shares.
Certain funds also offer other classes of shares which are not rated.
Those shares have different expenses and performance from Class A shares.
**Income from the municipal funds may be subject to state and local taxes and/or
(except  LTMFX) the federal  alternative  minimum tax.  Although it reserves the
right to do so in the future,  LTMFX does not currently  invest in bonds subject
to the alternative tax. *** The share price of the Fund is not guaranteed by the
U.S. Government.  +Class C shares of the respective funds have only been offered
since September 1, 1994.



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