CENTENNIAL MONEY MARKET TRUST
N-30D, 1994-03-10
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Dear Centennial Money Market Trust Shareholder:

We are pleased to provide you with the 1993 semi-annual report for Centennial
Money Market Trust.

During the six-month period ended December 31, 1993, the Trust's compounded
annualized yield was 2.70%. The corresponding yield without compounding was
2.67%. The seven-day annualized yields with and without compounding at
December 31, 1993 were 2.74% and 2.71%, respectively.

Centennial Money Market Trust is managed to seek current income consistent
with the preservation of capital. It invests primarily in high quality,
short-term money market securities.

During the past six months, the market for money market securities was
characterized by stable short-term interest rates. With the U.S. economy
sluggish throughout most of the year, interest rates remained low, which made
it attractive for companies to issue long-term debt. Therefore, the supply
of short-term money market securities was lower than usual. Inflation
remained under control which led to a neutral stance by the Federal Reserve
regarding interest rate adjustments. The net result is that current short-
term interest rates are at essentially the same level as at the beginning of
1993.

In this low short-term interest rate environment, the Trust continues to
invest all of its assets in high quality money market instruments. The
Trust's portfolio is concentrated in the corporate sector of the market to
gain additional yield. Within this area, a portion of holdings are invested
in floating rate instruments, which have yields tied to various indices, such
as the prime rate or U.S. Treasury bill rate. The Trust received higher
yields from these securities when short-term interest rates increased in
October.

In selecting money market securities, the Trust's managers diversify the
portfolio's holdings by market sector and issuer. Each security is carefully
analyzed to ensure that it meets the high quality standards of the Trust and
can provide a competitive return.

Going forward, Centennial Money Market Trust will continue to seek attractive
yield opportunities, while closely monitoring economic factors in order to
anticipate interest rate movements. Although we do not believe that short-
term rates will increase dramatically in 1994, we intend to adjust the
average maturity of our holdings to take advantage of new opportunities if
rates rise slightly later in the coming year.

We appreciate your confidence in the Trust's management. We will continue to
do our best to help you reach your investment goals in the years to come.



(James C. Swain signature)

James C. Swain
Chairman--Centennial Money Market Trust



(Jon S. Fossel signature)

Jon S. Fossel
President--Centennial Money Market Trust

January 21, 1994



<PAGE>

Statement of Investments December 31, 1993 (Unaudited) 
Centennial Money Market Trust 

<TABLE>
<CAPTION>
     Face                                                                                                     Market 
    Amount                                                                                                Value -- Note 1 
<S>              <C>                                                                                      <C>
                 Bankers' Acceptances--0.2% 
 $ 5,000,000     Sanwa Bank Ltd., 3.30%, 2/25/94 (Cost $4,974,792)                                         $  4,974,792 
                 Certificates of Deposit--3.7% 
                 Eurodollar Certificates of Deposit--0.2% 
   5,000,000     Sanwa Bank Ltd., 3.32%, 1/26/94                                                              4,999,856 
                 Yankee Bank Certificates of Deposit--3.5% 
  50,000,000     Mitsubishi Bank Ltd., 3.30%-3.87%, 1/31/94-6/22/94                                          50,008,482 
  25,000,000     Sanwa Bank Ltd., 3.30%-3.78%, 1/12/94-2/2/94                                                25,000,113 
   5,000,000     Societe Generale, 3.48%, 7/11/94                                                             5,000,000 
                                                                                                             80,008,595 
                 Total Certificates of Deposit (Cost $85,008,451)                                            85,008,451 
                 Direct Bank Obligations--8.2% 
                 Abbey National PLC, guaranteeing commercial paper of: 
  22,000,000      Abbey National North America Corp., 3.22%-3.35%, 3/18/94-4/26/94                           21,810,457 
                 ABN Amro Bank NV, guaranteeing commercial paper of: 
  18,000,000      ABN AMRO Bank Canada, 3.375%, 1/28/94                                                      17,954,437 
  25,000,000      ABN Amro North America Finance, Inc., 3.30%, 1/12/94                                       24,974,792 
                 Bankers Trust New York Corp., guaranteeing commercial paper of: 
   5,000,000      Bankers Trust Co. New York, 5.375%, 2/1/94                                                  5,008,357 
                 Canadian Imperial Bank of Commerce, guaranteeing commercial paper of: 
  36,500,000      Canadian Imperial Holdings, Inc., 3.25%-3.40%, 1/26/94-5/2/94                              36,278,093 
  20,000,000     FCC National Bank, 3.45%, 1/4/94( (1))                                                      20,000,000 
   5,000,000     Royal Bank of Canada, 3.27%, 3/24/94                                                         4,962,758 
                 Societe Generale, guaranteeing commercial paper of: 
  40,700,000      Societe Generale North America, Inc., 3.25%-3.36%, 1/11/94-2/23/94                         40,601,880 
                 Toronto-Dominion Bank, guaranteeing commercial paper of: 
  15,000,000      Toronto-Dominion Holdings, Inc., 3.30%, 4/11/94                                            14,862,500 
                 Total Direct Bank Obligations (Cost $186,453,274)                                          186,453,274 
                 Letters of Credit--0.9% 
                 Banc One Corp., guaranteeing commercial paper of: 
  10,000,000      Nationwide Funding Corp., 3.60%, 1/6/94( (1) (2) (3))                                      10,000,000 
                 Sanwa Bank Ltd., guaranteeing commercial paper of: 
  10,000,000      Orix America, Inc., 3.42%, 2/1/94( (3))                                                     9,970,550 
                 Total Letters of Credit (Cost $19,970,550)                                                  19,970,550 
                 Short-Term Notes--82.0% 
                 Asset-Backed--12.7% 
                 Beta Finance, Inc.: 
   5,000,000      3.51%, 1/3/94( (1) (3))                                                                     5,000,000 
  23,113,000      3.23%-3.32%, 1/31/94-4/19/94( (3))                                                         22,950,931 
  14,900,000     Cooperative Association of Tractor Dealers, Inc., 3.25%-3.42%, 3/14/94-5/11/94              14,751,739 

2
<PAGE>


                 Corporate Asset Funding Co., Inc.: 
 $10,000,000      3.15%-3.35%, 1/14/94-1/18/94                                                             $  9,986,514 
   5,000,000      3.3306%, 1/18/94( (1))                                                                      4,999,441 
  12,600,000     Corporate Receivable Corp., 3.32%, 2/7/94                                                   12,557,006 
  48,575,000     Falcon Asset Securitization Corp., 3.25%, 1/20/94-1/28/94                                   48,481,878 
  40,175,000     First Deposit Master Trust 1993-3, 3.25%-3.44%, 1/12/94-5/20/94( (3) (4))                   39,853,928 
  76,500,000     Preferred Receivables Funding Corp., 3.30%-3.38%, 1/6/94-2/11/94                            76,338,394 
  18,000,000     SMM Trust 1993-A, 3.3625%, 3/18/94( (3))                                                    17,999,729 
   5,000,000     SMM Trust 1993-B, 3.55%, 2/14/94( (1) (3) (4))                                               5,000,000 
  30,000,000     WCP Funding, 3.25%, 1/14/94                                                                 29,964,792 
                                                                                                            287,884,352 
                 Banks--2.4% 
  33,000,000     Bankers Trust New York Corp., 3.30%-3.37%, 1/10/94-2/11/94                                  32,914,192 
   6,000,000     CoreStates Capital Corp., 3.37%, 1/7/94                                                      6,000,000 
   4,000,000     Fleet Financial Group, Inc., 3.38%, 1/14/94                                                  3,995,118 
   5,000,000     Norwest Corp., 3.26%, 1/12/94                                                                4,995,019 
   7,000,000     Security Pacific Corp., 9.23%, 3/14/94                                                       7,080,902 
                                                                                                             54,985,231 
                 Beverages--Alcoholic--0.4% 
   8,100,000     Bass Finance (C.I.) Ltd., 3.35%, 1/21/94                                                     8,084,925 
                 Beverages--Soft Drinks--0.7% 
  15,000,000     Coca-Cola Enterprises, Inc., 3.43%, 1/31/94( (3))                                           14,957,125 
                 Broker-Dealers--23.3% 
                 Bear Stearns Cos., Inc.: 
  25,000,000      3.37%-3.6875%, 1/3/94-1/4/94( (1))                                                         25,000,000 
  74,200,000      3.22%-3.80%, 1/12/94-6/6/94                                                                73,776,542 
  30,000,000     CS First Boston Group, Inc., 3.4875%, 1/28/94( (1) (3))                                     30,000,000 
  55,000,000     Dean Witter, Discover & Co., 3.25%-3.35%, 1/14/94-1/31/94                                   54,904,847 
                 Goldman Sachs Group L.P.: 
  25,000,000      3.07%-3.375%, 1/3/94-1/18/94( (1) (3) (4))                                                 25,000,000 
  20,000,000      3.22%-3.30%, 1/14/94-3/17/94                                                               19,912,841 
  50,000,000      3.4375%-3.6374%, 1/18/94-3/15/94( (3) (4))                                                 50,000,000 
  12,000,000      3.25%, 3/21/94( (1) (2) (3) (4))                                                           12,000,000 
                 Lehman Brothers Holdings, Inc.: 
  50,500,000      3.375%, 1/3/94( (1))                                                                       50,500,000 
   5,000,000      3.35%, 3/17/94                                                                              4,965,104 
                 Merrill Lynch & Co., Inc.: 
  27,600,000      3.02%-3.45%, 1/3/94( (1))                                                                  27,598,363 
  53,500,000      3.23%-3.53%, 1/19/94-4/18/94                                                               53,246,211 

3

<PAGE>


                 Morgan Stanley Group, Inc.: 
 $20,798,000      2.82%, 1/3/94( (1))                                                                      $ 20,798,000 
  10,000,000      3.20%-3.35%, 1/27/94-1/31/94                                                                9,974,486 
  25,000,000     Republic New York Securities Corp., 3.425%, 1/3/94( (1) (2))                                25,000,000 
                 Shearson Lehman Brothers Holdings, Inc.: 
  10,000,000      3.57%, 1/4/94( (1))                                                                        10,000,000 
  35,000,000      3.46%-3.5781%, 1/7/94-1/20/94                                                              34,990,869 
                                                                                                            527,667,263 
                 Building Materials Group--1.0% 
  23,000,000     Compagnie de Saint-Gobain SA, 3.20%-3.30%, 2/25/94-5/19/94                                  22,786,661 
                 Commercial Finance--1.7% 
                 CIT Group Holdings, Inc.: 
  20,000,000      3.20%-3.30%, 1/3/94( (1))                                                                  19,986,003 
  11,000,000      3.5915%, 5/9/94( (1) (2))                                                                  11,000,000 
   8,000,000     Heller Financial, Inc., 3.6897%, 5/18/94( (1) (2))                                           8,000,000 
                                                                                                             38,986,003 
                 Conglomerates--3.7% 
   6,000,000     Grand Metropolitan Finance PLC, guaranteed by Grand Metropolitan PLC, 3.35%,                 5,934,675 
                  4/28/94 
  26,883,000     MCA Funding Corp., 3.24%-8.10%, 1/21/94-4/8/94( (3))                                        26,927,102 
   4,000,000     Mitsubishi International Corp., 3.27%, 3/31/94                                               3,967,664 
  26,000,000     Pacific Dunlop Holdings, Inc., guaranteed by Pacific Dunlop Ltd., 3.40%-3.43%,              25,865,387 
                  1/21/94-5/13/94( (3)) 
  20,000,000     Pacific Dunlop Ltd., 3.24%-3.275%, 2/24/94-3/1/94( (3))                                     19,897,726 
                                                                                                             82,592,554 
                 Consumer Non-Cyclicals--5.0% 
                 American Brands, Inc.: 
  30,000,000      3.25%-3.43%, 1/10/94-5/16/94                                                               29,870,815 
  83,100,000      3.25%-3.40%, 1/13/94-5/5/94( (3))                                                          82,762,908 
                                                                                                            112,633,723 
                 Diversified Finance--6.7% 
  10,000,000     Ford Motor Credit Corp., 6.15%, 1/14/94                                                     10,009,138 
  42,500,000     General Electric Capital Corp., 3.35%-3.40%, 1/7/94-4/18/94                                 42,317,629 
                 Household Finance Corp.: 
  42,000,000      3.41%-3.70%, 1/3/94-1/5/94( (1))                                                           42,000,000 
   5,000,000      9%, 2/1/94                                                                                  5,023,372 
  12,000,000      3.7656%, 6/8/94( (1) (2))                                                                  12,000,000 
  41,000,000     Transamerica Finance Corp., 3.25%-3.32%, 1/20/94-2/23/94                                    40,870,495 
                                                                                                            152,220,634 

4

<PAGE>

Electronics--0.2% 
 $ 5,000,000     Mitsubishi Electric Finance America, Inc., 3.44%, 1/14/94( (3))                          $    4,993,789 
                 Financial Services--Miscellaneous--8.6% 
  96,043,000     Countrywide Funding Corp., 3.30%-3.55%, 1/7/94-4/6/94                                        95,814,242 
  98,000,000     Fleet Mortgage Group, Inc., 3.27%-3.45%, 1/12/94-2/7/94                                      97,835,547 
                                                                                                             193,649,789 
                 Food-Grain and Agriculture--0.7% 
  15,000,000     Cargill, Inc., 3.43%-3.4938%, 1/24/94( (3) (4))                                              15,000,000 
                 Foreign Government Obligations--4.8% 
  25,000,000     Finnish Export Credit Ltd., supported by the Republic of Finland, 3.20%-3.30%,               24,907,265 
                  1/12/94-4/27/94 
  85,000,000     New South Wales Treasury Corp., supported by the Commonwealth of Australia,                  84,815,400 
                  State of New South Wales, 3.30%-3.36%, 1/10/94-2/3/94 
                                                                                                             109,722,665 
                 Industrial--1.0% 
  23,500,000     BICC Cables Corp., guaranteed by BICC PLC, 3.37%-3.55%, 1/4/94-2/2/94                        23,460,628 
                 Insurance--3.3% 
  75,000,000     Sun Life Insurance Co., 3.7125%, 1/10/94( (1) (2))                                           75,000,000 
                 Lubricants and Fuels--0.4% 
   8,000,000     Burmah Castrol Finance PLC, guaranteed by Burmah Castrol PLC, 3.375%, 1/26/94(                7,981,250 
                  (3)) 
                 Municipal--1.0% 
  23,200,000     Carilion Services, Inc., guaranteed by MBIA, 3.25%-3.50%, 1/10/94-1/28/94                    23,199,854 
                 Oil-Integrated International--1.4% 
  11,000,000     Petrofina (DE), Inc., 3.24%-3.37%, 4/4/94-4/18/94                                            10,898,051 
  20,000,000     Statoil, guaranteed by Den Norske Stats Oljeselskap AS, 3.25%-3.55%,                         19,973,653 
                  1/3/94-1/28/94 
                                                                                                              30,871,704 
                 Pollution Control--1.9% 
  44,600,000     WMX Technologies, Inc., 3.25%-3.32%, 4/5/94-6/19/94( (3))                                    44,127,615 
                 Savings and Loans-Holdings Companies--0.2% 
   5,000,000     Household Bank, 3.45%, 1/14/94                                                                4,999,998 
                 Telecommunications--0.9% 
  21,100,000     NYNEX Corp., 3.25%-3.40%, 3/15/94-3/28/94                                                    20,942,408 
                 Total Short-Term Notes (Cost $1,856,748,171)                                              1,856,748,171 

5
<PAGE>

Short-Term U.S. Government Obligations--5.0% 
 $106,211,741    Small Business Administration, 4%-7.625%, 1/1/94( (1)) (Cost $113,066,534)               $  113,066,534 

Total Investments, at Value (Cost $2,266,221,772)                                          100.0%          2,266,221,772 
Liabilities in Excess of Other Assets                                                          --               (346,291) 
Net Assets                                                                                 100.0%         $2,265,875,481 
</TABLE>

Short-term notes, bankers' acceptances, direct bank obligations and letters 
of credit are generally traded on a discount basis; the interest rate is the 
discount rate received by the Trust at the time of purchase. Other securities 
normally bear interest at the rates shown. 

1. Variable rate security. 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, 1993. 

2. Put obligation redeemable at full face value on the date reported. 

3. Security purchased in private placement transaction, without registration 
under the Securities Act of 1933 (the Act). The securities were acquired 
between January 19, 1993 and December 31, 1993, are carried at amortized 
cost, and amount to $470,288,040, or 20.8% of the Trust's net assets. 

4. In addition to being restricted, the security is considered illiquid by 
virtue of the absence of a readily available market or because of legal or 
contractual restrictions on resale. Illiquid securities amount to 
$146,853,928, or 6.5% of the Trust's net assets, at December 31, 1993. The 
Trust may not invest more than 10% of its net assets (determined at the time 
of purchase) in illiquid securities. 


See accompanying Notes to Financial Statements. 

6 

<PAGE>

 

Statement of Assets and Liabilities December 31, 1993 (Unaudited) 
Centennial Money Market Trust 

<TABLE>
<S>                                                                                <C>
 ASSETS: 
Investments, at value (cost $2,266,221,772)--see accompanying statement            $2,266,221,772 
Cash                                                                                    5,421,375 
Receivables: 
 Shares of beneficial interest sold                                                    20,196,200 
 Interest and principal paydowns                                                        6,666,371 
Other                                                                                     238,562 
  Total assets                                                                      2,298,744,280 
LIABILITIES: 
Payables and other liabilities: 
 Shares of beneficial interest redeemed                                                31,608,215 
 Distribution assistance--Note 3                                                          190,385 
 Dividends                                                                                 17,896 
 Other                                                                                  1,052,303 
  Total liabilities                                                                    32,868,799 
NET ASSETS                                                                         $2,265,875,481 
COMPOSITION OF NET ASSETS: 
Paid-in capital                                                                    $2,265,811,227 
Accumulated net realized gain from investment transactions                                 64,254 
NET ASSETS--Applicable to 2,265,811,227 shares of beneficial interest 
  outstanding                                                                      $2,265,875,481 
NET ASSET VALUE, REDEMPTION PRICE AND OFFERING PRICE PER SHARE                              $1.00 
</TABLE>


See accompanying Notes to Financial Statements


7
<PAGE>



Statement of Operations 
For the Six Months Ended December 31, 1993 (Unaudited) 
Centennial Money Market Trust 

<TABLE>
<S>                                                                        <C>
INVESTMENT INCOME--Interest                                                $37,806,970 
EXPENSES: 
Management fees--Note 3                                                      4,509,029 
Distribution assistance--Note 3                                              2,210,557 
Transfer and shareholder servicing agent fees--Note 3                        1,858,058 
Custodian fees and expenses                                                    171,550 
Registration and filing fees                                                   146,441 
Shareholder reports                                                            100,006 
Legal and auditing fees                                                         20,392 
Trustees' fees and expenses                                                     10,779 
Other                                                                           15,582 
  Total expenses                                                             9,042,394 
Less reimbursement from Centennial Asset Management 
  Corporation--Note 3                                                         (563,010) 
  Net expenses                                                               8,479,384 
NET INVESTMENT INCOME                                                       29,327,586 
NET REALIZED GAIN ON INVESTMENTS                                                 1,091 
NET INCREASE IN NET ASSETS RESULTING FROM OPERATIONS                       $29,328,677 
</TABLE>


See accompanying Notes to Financial Statements

8
<PAGE>



Statements of Changes in Net Assets 
Centennial Money Market Trust 

<TABLE>
<CAPTION>
                                                                 Six Months Ended 
                                                                   December 31,         Year Ended 
                                                                       1993              June 30, 
                                                                   (Unaudited)             1993 
<S>                                                                <C>                 <C>
OPERATIONS: 
Net investment income                                              $   29,327,586      $   47,958,826 
Net realized gain on investments                                            1,091             239,115 
 Net increase in net assets resulting from operations                  29,328,677          48,197,941 
DIVIDENDS AND DISTRIBUTIONS TO SHAREHOLDERS                           (29,567,234)        (47,958,826) 
BENEFICIAL INTEREST TRANSACTIONS: 
Net increase in net assets resulting from beneficial 
  interest transactions--Note 2                                       274,715,286         720,736,594 
NET ASSETS: 
Total increase                                                        274,476,729         720,975,709 
Beginning of period                                                 1,991,398,752       1,270,423,043 
End of period                                                      $2,265,875,481      $1,991,398,752 
</TABLE>


See accompanying Notes to Financial Statements

9
<PAGE>

 

Financial Highlights 
Centennial Money Market Trust 

<TABLE>
<CAPTION>
                                                                                     Year Ended June 30, 
                                         Six Months Ended 
                                           December 31, 
                                               1993 
                                           (Unaudited)           1993           1992          1991          1990         1989 
<S>                                        <C>                 <C>            <C>            <C>           <C>          <C>
PER SHARE OPERATING DATA: 
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 on 
  investments                                      .01                .03(1)         .04(1)       .07           .08          .08 
Dividends and distributions to 
  shareholders                                    (.01)              (.03)          (.04)        (.07)         (.08)        (.08) 
   
Net asset value, end of period                   $1.00              $1.00          $1.00        $1.00         $1.00        $1.00 
RATIOS/SUPPLEMENTAL DATA: 
Net assets, end of period (in 
  thousands)                                $2,265,875         $1,991,399     $1,270,423     $539,433      $470,078     $333,409 
Average net assets (in thousands)           $2,195,016         $1,700,638       $820,546     $494,871      $421,969     $272,430 
Number of shares outstanding at end 
  of period (in thousands)                   2,265,811          1,991,096      1,270,359      539,418       470,080      333,409 
Ratios to average net assets: 
 Net investment income                            2.65%(1)           2.82%          4.31%        6.66%         7.82%        8.24% 
   
 Expenses                                          .77%(1)(2)         .78%(2)        .69%(2)      .84%          .84%         .90% 
   
<FN>

1. Annualized. 

2. Absent the voluntary expense limitation, the expense ratio would have been 
.82%, .83% and .81% for the six months ended December 31, 1993 and the years 
ended June 30, 1993 and 1992, respectively. 
</TABLE>
 




See accompanying Notes to Financial Statements

10

<PAGE>

 

Notes to Financial Statements (Unaudited) 
Centennial Money Market Trust 

1. Significant Accounting Policies 

Centennial Money Market Trust (the Trust) is registered under the Investment 
Company Act of 1940, as amended, as a diversified, open-end management 
investment company. The Trust's investment advisor is Centennial Asset 
Management Corporation (the Manager), a subsidiary of Oppenheimer Management 
Corporation (OMC). 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 Income 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 tax provision is required. 

Distributions to Shareholders--The Trust intends to declare dividends from 
net investment income each regular business day 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. 


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, 1993                  Year Ended June 30, 1993 
                                    Shares             Amount              Shares             Amount 
<S>                              <C>                <C>                 <C>               <C>
Sold                              5,040,092,416     $ 5,040,092,416      8,687,789,457    $  8,687,789,457 
Dividends and distributions 
  reinvested                         30,405,139          30,405,139         46,057,413         46,057,413 
Redeemed                         (4,795,782,269)     (4,795,782,269)    (8,013,110,276)    (8,013,110,276) 
 Net increase                       274,715,286     $   274,715,286        720,736,594    $   720,736,594 
</TABLE>




11
<PAGE>


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 an annual fee of .50% on 
the first $250 million of net assets with a reduction of .025% on each $250 
million thereafter, to .40% on net assets in excess of $1 billion. The 
Manager has voluntarily agreed to reduce the fee on net assets in excess of 
$1.25 billion, to .375% on the first $250 million, .35% on the next $500 
million, and .325% on net assets in excess of $2 billion. The Manager has 
agreed to reimburse the Trust if aggregate expenses (with specified 
exceptions) exceed the lesser of 1.50% of the first $30 million of average 
annual net assets of the Trust, plus 1% of average annual net assets in 
excess of $30 million; or 25% of the total annual investment income of the 
Trust. In addition, the Manager has voluntarily undertaken to assume Trust 
expenses to the level needed to maintain a seven-day yield at least equal to, 
and a dividend equal to, that of Daily Cash Accumulation Fund, Inc., another 
registered investment company advised by the Manager. 

Shareholder Services, Inc. (SSI), a subsidiary of OMC, is the transfer and 
shareholder servicing agent for the Trust, and for other registered 
investment companies. SSI's total costs of providing such services are 
allocated ratably to these companies. 

Under an approved plan of distribution, the Trust may expend up to .20% of 
its net assets annually to reimburse certain securities dealers and other 
financial institutions and organizations for costs incurred in distributing 
Trust shares. 



12
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Centennial Money Market Trust 

Officers and Trustees 
James C. Swain, Chairman and Chief 
 Executive Officer 
Robert G. Avis, Trustee 
William A. Baker, Trustee 
Charles Conrad, Jr., Trustee 
Jon S. Fossel, Trustee and President 
Raymond J. Kalinowski, Trustee 
C. Howard Kast, Trustee 
Robert M. Kirchner, Trustee 
Ned M. Steel, Trustee 
Andrew J. Donahue, Vice President 
Dorothy G. Warmack, Vice President 
Carol E. Wolf, Vice President 
Arthur J. Zimmer, Vice President 
George C. Bowen, Vice President, Secretary 
 and Treasurer 
Lynn M. Coluccy, 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 

Legal Counsel 
Myer, Swanson & Adams, P.C. 

The financial statements included herein have been taken from the records of 
the Trust without examination by the independent auditors. 

This is a copy of a report to shareholders of Centennial Money Market Trust. 
This report must be preceded or accompanied by a Prospectus of Centennial 
Money Market Trust. For material information concerning the Trust, see the 
Prospectus. 

For shareholder servicing, call: 
1-800-525-7048 (in U.S.) 
303-671-3200 (outside U.S.) 

Or write: 
Shareholder Services, Inc. 
P.O. Box 5270 
Denver, CO 80217-5270 


RS150.0194.R     Printed on recycled paper.


1993 Semi-Annual Report 
Centennial Money Market Trust 
December 31, 1993 





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