<PAGE>
[FRONT COVER]
1998 SEMIANNUAL REPORT
CENTENNIAL
CALIFORNIA TAX EXEMPT TRUST
- --------------------------------------------------------------------------------
DECEMBER 31, 1998
RS0180.001.1298
<PAGE>
JAMES C. SWAIN
Chairman
Centennial California
Tax Exempt Trust
BRIDGET A. MACASKILL
President
Centennial California
Tax Exempt Trust
Dear Shareholder:
California's economy continues to flourish, despite the deep recession in Asia,
one of the state's major trading partners. Personal income in California is
growing faster than in the United States as a whole. Employment is also growing
faster, led by the construction, entertainment and technology industries.
Meanwhile, international markets were volatile during the second half of 1998.
At various times during the six-month period that ended December 31, 1998,
demand for Treasury bills surged, boosting prices and reducing yields,
particularly in late summer as Russia's economy weakened.
With a global recession looming, the Federal Reserve Board went into action. In
the fall, the Fed cut short-term interest rates three times to stimulate the
U.S. economy, and dozens of central banks around the world followed suit. While
these actions invigorated the U.S. stock market in particular, money market
instruments, including tax-exempt issues in the Centennial California Tax Exempt
Trust, tended to offer lower yields as a result. However, because the demand for
taxable Treasury bills was so heavy, causing T-bill prices to surge and their
yields to plunge, T-bill yields weren't much higher than tax-exempts during the
second half of the year. In fact, when taxes are taken into account, tax-exempt
securities were particularly attractive in comparison.
For the six-month period that ended December 31, 1998, the Trust provided a
compounded annual yield of 2.35%. Without compounding, the corresponding yield
was 2.32%. For investors in the 36% federal tax bracket, this is equivalent to a
taxable yield of 3.67% and 3.59%, with and without compounding, respectively.
The seven-day annualized yields, with and without compounding, on December 31,
1998, were 2.63% and 2.67%, respectively.1 It is important to remember that an
investment in the Trust is neither insured nor guaranteed by the U.S.
government, and there is no assurance that the Trust will be able to maintain a
stable $1.00 share price in the future.
During the last six-month period, we focused on non-callable rather than
callable securities. Non-callable securities, which cannot be prematurely repaid
by the issuer, earn higher returns in the portfolio. In a period of declining
interest rates, a non-callable structure is particularly valuable. Otherwise,
the issuer would be able to repay the security, and we would have to reinvest
the money at lower yields. With inflation throughout the world extremely low by
historical standards, and economic growth sluggish, we believe that interest
rates are likely to decline further.
1. Compounded yields assume reinvestment of dividends. Past performance is not
indicative of future results.
2 Centennial California Tax Exempt Trust
<PAGE>
As we move into 1999, we will continue to monitor interest rates, the various
municipal economies and the credit quality of the securities in the portfolio.
To the extent that we purchase securities backed by banking institutions, we
have been careful to avoid banks that have heavy exposure to Asia. Indeed, all
of the banks guaranteeing securities in the portfolio carry very high ratings by
national credit rating agencies. Although we will continue to search for
tax-exempt yield, we will always keep in mind your objectives of safety and
liquidity.
Thank you for your confidence in Centennial California Tax Exempt Trust. We look
forward to helping you reach your investment goals of safety, liquidity and
attractive yield.
Sincerely,
/s/James C. Swain /s/Bridget A. Macaskill
James C. Swain Bridget A. Macaskill
January 25, 1999
3 Centennial California Tax Exempt Trust
<PAGE>
<TABLE>
<CAPTION>
================================================================================
STATEMENT OF INVESTMENTS DECEMBER 31, 1998 (UNAUDITED)
FACE VALUE
AMOUNT SEE NOTE 1
======================================================================================================================
SHORT-TERM TAX-EXEMPT OBLIGATIONS - 103.4%
- ----------------------------------------------------------------------------------------------------------------------
CALIFORNIA - 103.4%
- ----------------------------------------------------------------------------------------------------------------------
<S> <C> <C> <C>
ABN AMRO Munitops Certificates, Series 1998-10, 3.35% (1)(2) $ 7,000,000 $ 7,000,000
- ----------------------------------------------------------------------------------------------------------------------
Agoura Hills, CA MH RRB, Oakridge Apts. Project, 3.90% (2) 1,200,000 1,200,000
- ----------------------------------------------------------------------------------------------------------------------
CA CDAU Apartment Development RRB, Whispering Winds
Apts., Series D, 4.10% (2) 3,750,000 3,750,000
- ----------------------------------------------------------------------------------------------------------------------
CA CDAU RB, Trust Receipts-A23-REG D, 3.95% (2) 5,000,000 5,000,000
- ----------------------------------------------------------------------------------------------------------------------
CA EDFAU IDV RB, Inland Empire Venture, LLC Project, 4% (2) 1,750,000 1,750,000
- ----------------------------------------------------------------------------------------------------------------------
CA FAU PC RB Pacific Gas & Electric, 2.85%, 2/1/99 (3) 1,000,000 1,000,000
- ----------------------------------------------------------------------------------------------------------------------
CA GOB, Tendered Option Certificates, Series 1998A,
MBIA Insured, 4.10% (1)(2) 6,938,000 6,937,942
- ----------------------------------------------------------------------------------------------------------------------
CA HFA RB, Series PT 220, 3.60%, 4/8/99 (3) 3,290,000 3,290,000
- ----------------------------------------------------------------------------------------------------------------------
CA PCFAU RB, Chevron USA, Inc. Project, 3.65%, 5/15/99 (3) 2,500,000 2,500,000
- ----------------------------------------------------------------------------------------------------------------------
CA PCFAU SWD RB, Western Waste Industries, Series A,
4.20% (2) 1,500,000 1,500,000
- ----------------------------------------------------------------------------------------------------------------------
CA RAN, 4%, 6/30/99 23,000,000 23,100,483
- ----------------------------------------------------------------------------------------------------------------------
CA SCDAU COP, Series 24, FSA Insured, 3.70% (1)(2) 7,000,000 7,000,000
- ----------------------------------------------------------------------------------------------------------------------
CA Statewide CDC IDV RB, Propak California Corp.,
Series B, 3.90% (2) 700,000 700,000
- ----------------------------------------------------------------------------------------------------------------------
CA University Board of Regents RB, 3.15%, 3/10/99 (3) 6,000,000 6,000,000
- ----------------------------------------------------------------------------------------------------------------------
Covina City, CA RA MH RRB, Shadowhills Apts., Inc.,
Series A, 3.80% (2) 2,700,000 2,700,000
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Los Angeles Cnty., CA MTAU Sales Tax RB, AMBAC Insured,
Series SG54, 3.93% (2) 1,000,000 1,000,000
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Los Angeles Cnty., CA Pension Obligation RRB, Series A,
3.70% (2) 3,000,000 3,000,000
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Los Angeles, CA Airport RB, Series SG61, 3.92% (2) 6,000,000 6,000,000
- ----------------------------------------------------------------------------------------------------------------------
Los Angeles, CA Convention & Exhibition Center Authority
Refunding COP:
AMBAC Insured, 6.60%, 8/15/99 4,020,000 4,112,244
Prerefunded, Series A, 7.375%, 8/15/99 (3) 8,570,000 8,928,858
- ----------------------------------------------------------------------------------------------------------------------
Los Angeles, CA Department of Water RB, 3.05%, 3/12/99 (3) 3,000,000 3,000,000
- ----------------------------------------------------------------------------------------------------------------------
Los Angeles, CA Wastewater Systems RB, 3%, 3/19/99 (3) 2,100,000 2,100,000
- ----------------------------------------------------------------------------------------------------------------------
Modesto, CA Irrigation District FAU RB, Series SG66, 3.88% (2) 5,500,000 5,500,000
- ----------------------------------------------------------------------------------------------------------------------
Oceanside, CA MH RRB, Lakeridge Apts. Project, 4.25% (2) 7,000,000 7,000,156
- ----------------------------------------------------------------------------------------------------------------------
Pittsburg, CA Mortgage Obligation RRB, Series A, 4.20% (2) 7,000,000 7,000,034
- ----------------------------------------------------------------------------------------------------------------------
Riverside Cnty., CA HAU MH RB, McKinley Project, 3.70% (2) 6,300,000 6,300,077
- ----------------------------------------------------------------------------------------------------------------------
Riverside Cnty., CA Tax & RAN, 4.50%, 9/30/99 3,500,000 3,537,868
- ----------------------------------------------------------------------------------------------------------------------
Sacramento Cnty., CA MH RRB, Issue A, 3.90% (2) 3,400,000 3,400,070
- ----------------------------------------------------------------------------------------------------------------------
Sacremento Cnty., CA RB, Trust REG D, Series A28, 3.95% (2) 8,000,000 8,000,000
- ----------------------------------------------------------------------------------------------------------------------
Sacremento, CA Municipal Utilities RB:
2.80%, 4/5/99 (3) 3,000,000 3,000,000
3%, 3/12/99 (3) 7,000,000 7,000,000
- ----------------------------------------------------------------------------------------------------------------------
San Bernardino Cnty., CA Tax & RAN, 4.50%, 9/30/99 4,000,000 4,045,717
</TABLE>
4 Centennial California Tax Exempt Trust
<PAGE>
<TABLE>
<CAPTION>
================================================================================
STATEMENT OF INVESTMENTS (UNAUDITED)(CONTINUED)
FACE VALUE
AMOUNT SEE NOTE 1
======================================================================================================================
SHORT-TERM TAX-EXEMPT OBLIGATIONS (CONTINUED)
- ----------------------------------------------------------------------------------------------------------------------
CALIFORNIA (CONTINUED)
- ----------------------------------------------------------------------------------------------------------------------
<S> <C> <C> <C>
San Diego, CA MH RRB, Coral Point Apts. Project,
Series A, 4% (2) $2,500,000 $ 2,500,000
- ----------------------------------------------------------------------------------------------------------------------
San Diego, CA TAN, Series A, 4.50%, 9/30/99 5,000,000 5,052,639
- ----------------------------------------------------------------------------------------------------------------------
San Francisco, CA City & Cnty. International Airport RB,
Series 88, 3.88% (2) 1,700,000 1,700,000
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San Marcos, CA RA MH Bonds, San Marcos Retirement
Village Project, 3.98% (2) 2,400,000 2,400,000
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Southern CA PP Authority Transmission Project RB,
Southern Transmission A, 4%, 7/1/99 2,000,000 2,005,775
- ----------------------------------------------------------------------------------------------------------------------
Southern CA Public PAU RRB, Southern Transmission Project,
AMBAC Insured, 3.65% (2) 5,000,000 5,000,000
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Visalia, CA IDV RB, Akers West Assn., 3.85% (2) 2,350,000 2,350,000
- ----------------------------------------------------------------------------------------------------------------------
TOTAL INVESTMENTS, AT VALUE 103.4% 177,361,863
- ----------------------------------------------------------------------------------------------------------------------
LIABILITIES IN EXCESS OF OTHER ASSETS (3.4) (5,861,504)
------ -------------
NET ASSETS 100.0% $171,500,359
====== =============
</TABLE>
<TABLE>
<CAPTION>
To simplify the listings of securities, abbreviations are used per the table
below:
<S> <C>
CDAU - Communities Development Authority PC - Pollution Control
CDC - Community Development Corp. PCFAU - Pollution Control Finance Authority
COP - Certificates of Participation PP - Public Power
EDFAU - Economic Development Finance Authority RA - Redevelopment Agency
FAU - Finance Authority RAN - Revenue Anticipation Nts.
GOB - General Obligation Bonds RB - Revenue Bonds
HAU - Housing Authority RRB - Revenue Refunding Bonds
HFA - Housing Finance Agency SCDAU - Statewide Communities Development
IDV - Industrial Development Authority
MH - Multifamily Housing SWD - Solid Waste Disposal
MTAU - MetropolitanTransportation Authority TAN - Tax Anticipation Nts.
PAU - Power Authority
</TABLE>
1. Represents securities sold under Rule 144A, which are exempt from
registration under the Securities Act of 1933, as amended. These securities have
been determined to be liquid under guidelines established by the Board of
Trustees. These securities amount to $20,937,942 or 12.21% of the Trust's net
assets as of December 31, 1998.
2. Floating or variable rate obligation maturing in more than one year. The
interest rate, which is based on specific, or an index of, market interest
rates, is subject to change periodically and is the effective rate on December
31, 1998. This instrument may also have a demand feature which allows, on up to
30 days' notice, the recovery of principal at any time, or at specified
intervals not exceeding one year.
3. Put obligation redeemable at full face value on the date reported.
See accompanying Notes to Financial Statements.
5 Centennial California Tax Exempt Trust
<PAGE>
<TABLE>
STATEMENT OF ASSETS AND LIABILITIES DECEMBER 31, 1998 (UNAUDITED)
==============================================================================================================================
ASSETS
<S> <C>
Investments, at value - see accompanying statement $177,361,863
- ------------------------------------------------------------------------------------------------------------------------------
Cash 508,751
- ------------------------------------------------------------------------------------------------------------------------------
Receivables and other assets:
Shares of beneficial interest sold 1,715,516
Interest 1,690,742
Other 5,904
-------------
Total assets 181,282,776
==============================================================================================================================
LIABILITIES
Payables and other liabilities:
Investments purchased 8,002,590
Shares of beneficial interest redeemed 1,627,316
Service plan fees 88,756
Transfer and shareholder servicing agent fees 9,240
Other 54,515
-------------
Total liabilities 9,782,417
==============================================================================================================================
NET ASSETS $171,500,359
=============
==============================================================================================================================
COMPOSITION OF NET ASSETS
Paid-in capital $171,344,441
- ------------------------------------------------------------------------------------------------------------------------------
Accumulated net realized gain on investment transactions 155,918
- ------------------------------------------------------------------------------------------------------------------------------
Net assets - applicable to 171,344,441 shares of beneficial
interest outstanding $171,500,359
=============
==============================================================================================================================
NET ASSET VALUE, REDEMPTION PRICE PER SHARE AND OFFERING PRICE PER SHARE $1.00
</TABLE>
See accompanying Notes to Financial Statements.
6 Centennial California Tax Exempt Trust
<PAGE>
<TABLE>
=====================================================================================================================
STATEMENT OF OPERATIONS FOR THE SIX MONTHS ENDED DECEMBER 31, 1998 (UNAUDITED)
==============================================================================================================================
<S> <C>
INVESTMENT INCOME - Interest $2,597,605
==============================================================================================================================
EXPENSES
Management fees - Note 3 420,431
- ------------------------------------------------------------------------------------------------------------------------------
Service plan fees - Note 3 168,174
- ------------------------------------------------------------------------------------------------------------------------------
Transfer and shareholder servicing agent fees - Note 3 30,705
- ------------------------------------------------------------------------------------------------------------------------------
Shareholder reports 13,181
- ------------------------------------------------------------------------------------------------------------------------------
Registration and filing fees 9,718
- ------------------------------------------------------------------------------------------------------------------------------
Custodian fees and expenses 6,624
- ------------------------------------------------------------------------------------------------------------------------------
Legal, auditing and other professional fees 5,982
- ------------------------------------------------------------------------------------------------------------------------------
Trustees' fees and expenses 1,296
- ------------------------------------------------------------------------------------------------------------------------------
Other 2,075
-----------
Total expenses 658,186
Less assumption of expenses by Centennial Asset Management Corporation - Note 3 (9,330)
-----------
Net expenses 648,856
==============================================================================================================================
NET INVESTMENT INCOME 1,948,749
==============================================================================================================================
NET REALIZED GAIN ON INVESTMENTS 178,793
==============================================================================================================================
NET INCREASE IN NET ASSETS RESULTING FROM OPERATIONS $2,127,542
===========
</TABLE>
===================================
STATEMENTS OF CHANGES IN NET ASSETS
<TABLE>
<CAPTION>
SIX MONTHS ENDED
DECEMBER 31, 1998 YEAR ENDED
(UNAUDITED) JUNE 30, 1998
==============================================================================================================================
OPERATIONS
<S> <C> <C>
Net investment income $ 1,948,749 $ 4,512,553
- ------------------------------------------------------------------------------------------------------------------------------
Net realized gain (loss) 178,793 (19,307)
------------- -------------
Net increase in net assets resulting from operations 2,127,542 4,493,246
==============================================================================================================================
DIVIDENDS AND DISTRIBUTIONS TO SHAREHOLDERS (1,948,749) (4,512,553)
==============================================================================================================================
BENEFICIAL INTEREST TRANSACTIONS
Net increase in net assets resulting from
beneficial interest transactions - Note 2 15,489,633 23,912,099
==============================================================================================================================
NET ASSETS
Total increase 15,668,426 23,892,792
- ------------------------------------------------------------------------------------------------------------------------------
Beginning of period 155,831,933 131,939,141
------------- -------------
End of period $171,500,359 $155,831,933
============= =============
</TABLE>
See accompanying Notes to Financial Statements.
7 Centennial California Tax Exempt Trust
<PAGE>
<TABLE>
<CAPTION>
====================
FINANCIAL HIGHLIGHTS
Six Months
Ended
December 31, Year Ended June 30,
1998 (Unaudited) 1998 1997 1996 1995 1994
================================================================================================================================
PER SHARE OPERATING DATA
<S> <C> <C> <C> <C> <C> <C>
Net asset value, beginning of period $1.00 $1.00 $1.00 $1.00 $1.00 $1.00
- --------------------------------------------------------------------------------------------------------------------------------
Income from investment operations - net
investment income and net realized gain .01 .03 .03 .03 .03 .02
Dividends and distributions to shareholders (.01) (.03) (.03) (.03) (.03) (.02)
- --------------------------------------------------------------------------------------------------------------------------------
Net asset value, end of period $1.00 $1.00 $1.00 $1.00 $1.00 $1.00
==========================================================================
- --------------------------------------------------------------------------------------------------------------------------------
TOTAL RETURN(1) 1.20% 2.86% 2.81% 2.97% 3.00% 1.82%
- --------------------------------------------------------------------------------------------------------------------------------
RATIOS/SUPPLEMENTAL DATA
Net assets, end of period (in thousands) $171,500 $155,832 $131,939 $118,838 $92,318 $60,376
- --------------------------------------------------------------------------------------------------------------------------------
Average net assets (in thousands) $166,900 $160,317 $129,087 $112,911 $71,278 $65,520
- --------------------------------------------------------------------------------------------------------------------------------
Ratios to average net assets:
Net investment income 2.32% 2.81% 2.78% 2.94% 2.99% 1.79%
Expenses, before voluntary assumption
by the Manager(2) 0.78%(3) 0.80% 0.82% 0.80% 0.83% 0.87%
Expenses, net of voluntary assumption
by the Manager 0.77%(3) 0.79% 0.80% 0.79% 0.80% 0.80%
</TABLE>
1. Assumes a hypothetical initial investment on the business day before the
first day of the fiscal period, with all dividends reinvested in additional
shares on the reinvestment date, and redemption at the net asset value
calculated on the last business day of the fiscal period. Total returns reflect
changes in net investment income only.
2. Beginning in fiscal 1995, the expense ratio reflects the effect of gross
expenses paid indirectly by the Trust. Prior year expense ratios have not been
adjusted.
3. Annualized
See accompanying Notes to Financial Statements.
8 Centennial California Tax Exempt Trust
<PAGE>
NOTES TO FINANCIAL STATEMENTS (Unaudited)
1. SIGNIFICANT ACCOUNTING POLICIES
Centennial California Tax Exempt Trust (the Trust) is registered under the
Investment Company Act of 1940, as amended, as a non-diversified, open-end
management investment company. The Trust's investment objective is to seek the
maximum current interest income exempt from Federal and California personal
income taxes for individual investors as is consistent with preservation of
capital. The Trust's investment advisor is Centennial Asset Management
Corporation (the Manager), a subsidiary of OppenheimerFunds, Inc. (OFI). The
following is a summary of significant accounting policies consistently followed
by the Trust.
INVESTMENT VALUATION. Portfolio securities are valued on the basis of amortized
cost, which approximates market value.
FEDERAL TAXES. The Trust intends to continue to comply with provisions of the
Internal Revenue Code applicable to regulated investment companies and to
distribute all of its taxable income to shareholders. Therefore, no federal
income or excise tax provision is required.
DISTRIBUTIONS TO SHAREHOLDERS. The Trust intends to declare dividends from net
investment income each day the New York Stock Exchange is open for business and
pay such dividends monthly. To effect its policy of maintaining a net asset
value of $1.00 per share, the Trust may withhold dividends or make distributions
of net realized gains.
OTHER. Investment transactions are accounted for on the date the investments are
purchased or sold (trade date). Realized gains and losses on investments are
determined on an identified cost basis, which is the same basis used for federal
income tax purposes.
The Trust concentrates its investments in California and, therefore, may have
more credit risks related to the economic conditions of California than a
portfolio with a broader geographical diversification.
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 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.
2. SHARES OF BENEFICIAL INTEREST
The Trust has authorized an unlimited number of no par value shares of
beneficial interest. Transactions in shares of beneficial interest were as
follows:
<TABLE>
<CAPTION>
SIX MONTHS ENDED
DECEMBER 31, 1998 YEAR ENDED JUNE 30, 1998
SHARES AMOUNT SHARES AMOUNT
--------------------------- -----------------------------
<S> <C> <C> <C> <C>
Sold 245,122,799 $ 245,122,799 587,035,412 $ 587,035,412
Dividends and distributions reinvested 2,054,956 2,054,956 4,414,987 4,414,987
Redeemed (231,688,122) (231,688,122) (567,538,300) (567,538,300)
------------- -------------- ------------- --------------
Net increase 15,489,633 $ 15,489,633 23,912,099 $ 23,912,099
============== ============== ============= ==============
</TABLE>
3. MANAGEMENT FEES AND OTHER TRANSACTIONS WITH AFFILIATES
Management fees paid to the Manager were in accordance with the investment
advisory agreement with the Trust which provides for a fee of 0.50% of the first
$250 million of net assets; 0.475% of the next $250 million of net assets; 0.45%
of the next $250 million of net assets; 0.425% of the next $250 million of net
assets and 0.40% of net assets in excess of $1 billion. The Manager has
voluntarily undertaken to assume Trust expenses in excess of 0.80% of average
annual net assets. The Trust's management fee for the six months ended December
31, 1998 was 0.50% of the average annual net assets of the Trust.
Shareholder Services, Inc. (SSI), a subsidiary of the Manager, is the transfer
and shareholder servicing agent for the Trust and other Oppenheimer funds. SSI's
total costs of providing such services are allocated ratably to these funds.
Under an approved plan of distribution, the Trust may expend up to 0.20% of its
net assets annually to reimburse the Manager, as distributor, for costs incurred
in connection with the personal service and maintenance of accounts that hold
shares of the Trust, including amounts paid to brokers, dealers, banks and other
institutions.
9 Centennial California Tax Exempt Trust
<PAGE>
CENTENNIAL CALIFORNIA TAX EXEMPT TRUST
OFFICERS AND TRUSTEES
James C. Swain, Chairman and Chief Executive Officer
Bridget A. Macaskill, Trustee and President
Robert G. Avis, Trustee
William A. Baker, Trustee
Charles Conrad, Jr., Trustee
Jon S. Fossel, Trustee
Sam Freedman, Trustee
Raymond J. Kalinowski, Trustee
C. Howard Kast, Trustee
Robert M. Kirchner, Trustee
Ned M. Steel, Trustee
George C. Bowen, Trustee, Vice President, Treasurer and Assistant Secretary
Andrew J. Donohue, Vice President and Secretary
Michael J. Carbuto, Vice President
Robert J. Bishop, Assistant Treasurer
Scott T. Farrar, Assistant Treasurer
Robert G. Zack, Assistant Secretary
INVESTMENT ADVISOR AND DISTRIBUTOR
Centennial Asset Management Corporation
TRANSFER AND SHAREHOLDER SERVICING AGENT
Shareholder Services, Inc.
CUSTODIAN OF PORTFOLIO SECURITIES
Citibank, N.A.
INDEPENDENT AUDITORS
Deloitte & Touche LLP
LEGAL COUNSEL
Myer, Swanson, Adams & Wolf, P.C.
The financial statements included herein have been taken from the records of the
Trust without examination of the independent auditors.
This is a copy of a report to shareholders of Centennial California Tax Exempt
Trust. This report must be preceded or accompanied by a Prospectus of Centennial
California Tax Exempt Trust. For material information concerning the Trust, see
the Prospectus.
For shareholder servicing, call:
1-800-525-9310 (in U.S.)
303-768-3200 (outside U.S.)
Or write:
Shareholder Services, Inc.
P.O. Box 5143
Denver, CO 80217-5143
10 Centennial California Tax Exempt Trust