THE OAKMARK FUND

Report from Bill Nygren and Kevin Grant, Portfolio Managers

William C. Nygren photo Kevin G. Grant photo

THE VALUE OF A $10,000 INVESTMENT IN THE OAKMARK FUND FROM ITS INCEPTION (8/5/91) TO PRESENT (6/30/06) AS COMPARED TO THE STANDARD & POOR'S 500 INDEX4
Oakmark Fund Chart

Average Annual Total Returns
(as of 6/30/06)

Total Return
Last 3 Months*

1-year

5-year

10-year

Since
Inception
(8/5/91)


Oakmark Fund (Class I)
-0.35%
4.16%
4.29%
8.00%
15.10%
S&P 500
-1.44%
8.63%
2.49%
8.32%
10.52%
Dow Jones Average8
0.94%
11.08%
3.43%
9.14%
11.71%
Lipper Large Cap Value Index9
0.06%
10.46%
3.93%
8.35%
10.43%

The graph and table do not reflect the deduction of taxes that a shareholder would pay on fund distributions or the redemption of fund shares.
The performance data quoted represents past performance. The above performance information for the Fund does not reflect the imposition of a 2% redemption fee on shares held for 90 days or less to deter market timers. If reflected, the fee would reduce the performance quoted. Past performance does not guarantee future results. The investment return and principal value will fluctuate so that an investor's shares, when redeemed, may be worth more or less than their original cost. Current performance may be lower or higher than the performance data quoted. Average annual total return measures annualized change, while total return measures aggregate change. To obtain most recent month-end performance data, visit oakmark.com.
* Not annualized

Last quarter The Oakmark Fund lost a fraction of one percent, which rounds to no change, compared to the S&P 500's loss of a little more than 1%. For the calendar year-to-date, both the Fund and the S&P are up 3%. Comcast, up 25%, led the Fund's biggest gainers in the quarter, followed by Kohl's and H&R Block, which were both up 11%. Kohl's has continued to achieve strong sales momentum. Comcast's and Block's gains seemed less tied to news and more like reversals of past stock underperformance. During the past quarter, more of our stocks were up than down, but we uncharacteristically had more large losers than large gainers. Pulte Homes, Home Depot and Fortune Brands were all double-digit losers due to growing fears of a hard landing for the housing market. Sun Microsystems, one of our best performers last quarter, gave back those gains as competitors' new product introductions began to narrow Sun's performance advantage. We remain confident in all of these holdings. We sold CBS and restored our Viacom weighting to a normal position. We also sold our Coca-Cola Enterprises because we believed Coca-Cola had become more attractive (see below), and we converted our remaining Burlington Resources stock into ConocoPhillips because selling some Conoco instead of Burlington realized less taxable gain. In addition to Coca-Cola, we added shares of Schering-Plough, which is discussed on our website.

Coca-Cola (KO—$43)

In 1998 we were the "value" part of a mutual fund presentation to financial advisors. We started off the discussion of investment philosophy with our familiar three requirements: we want businesses that grow, managements on our side, but most important, we will only buy at large discounts to estimated business value. Then, the growth manager began: "Coca-Cola. Investing doesn't need to be so complicated. When you buy great businesses you don't need to worry about price." Coke stock peaked at $89 in 1998, and despite growing earnings more than 50% since then, the stock now trades at less than half that price. The world's largest beverage company, which was previously priced at over 60 times earnings, today sells at 17 times expected earnings and has a dividend yield of 3%. We believe that growth in global sales, combined with share repurchase and an above-average dividend yield will now produce good returns for Coca-Cola shareholders.

Best wishes,

William C. Nygren, CFA
Portfolio Manager
bnygren@oakmark.com
Kevin G. Grant, CFA
Portfolio Manager
kgrant@oakmark.com

THE OAKMARK FUND

Schedule of Investments—June 30, 2006 (Unaudited)

Name Shares Held Market Value

Common Stocks—94.5%    
Apparel Retail—4.1%    
Limited Brands 4,628,047 $118,431,723
The Gap, Inc. 5,766,700 100,340,580
   
    218,772,303
Broadcasting & Cable TV—7.1%    
Comcast Corporation, Special Class A (a) 3,425,000 $112,271,500
The DIRECTV Group, Inc. (a) 6,150,000 101,475,000
EchoStar Communications Corporation, Class A (a) 2,525,000 77,795,250
Liberty Media Holding Corp - Capital, Class A (a) 739,970 61,987,287
Discovery Holding Company, Class A (a) 1,740,140 25,458,248
   
    378,987,285
Catalog Retail—1.2%    
Liberty Media Holding Corp - Interactive, Class A (a) 3,699,850 $63,859,411
Department Stores—2.1%    
Kohl's Corporation (a) 1,950,000 $115,284,000
Home Improvement Retail—2.1%    
The Home Depot, Inc. 3,181,500 $113,865,885
Homebuilding—1.9%    
Pulte Homes, Inc. 3,500,000 $100,765,000
Household Appliances—1.7%    
The Black & Decker Corporation 1,050,000 $88,683,000
Housewares & Specialties—1.9%    
Fortune Brands, Inc. 1,400,000 $99,414,000
Leisure Products—1.0%    
Mattel, Inc. 3,274,300 $54,058,693
Motorcycle Manufacturers—2.2%    
Harley-Davidson, Inc. 2,200,000 $120,758,000
Movies & Entertainment—6.2%    
Time Warner, Inc.  7,447,700 $128,845,210
The Walt Disney Company 3,400,000 102,000,000
Viacom, Inc., Class B (a) 2,839,745 101,776,461
   
    332,621,671
Publishing—1.3%    
Gannett Co., Inc. 1,234,500 $69,045,585
Restaurants—5.3%    
McDonald's Corporation 4,450,000 $149,520,000
Yum! Brands, Inc. 2,724,000 136,935,480
   
    286,455,480
Specialized Consumer Services—2.4%    
H&R Block, Inc. 5,358,600 $127,856,196
Brewers—3.7%    
Anheuser-Busch Companies, Inc. 2,350,000 $107,136,500
InBev NV (b) 1,850,000 90,745,400
   
    197,881,900
Distillers & Vintners—1.6%    
Diageo plc (c) 1,271,000 $85,856,050
Hypermarkets & Super Centers—2.1%    
Wal-Mart Stores, Inc. 2,300,000 $110,791,000
Packaged Foods & Meats—3.4%    
H.J. Heinz Company 2,250,000 $92,745,000
General Mills, Inc. 1,756,000 90,714,960
   
    183,459,960
Soft Drinks—1.1%    
The Coca-Cola Company 1,398,700 $60,172,074
Integrated Oil & Gas—1.5%    
ConocoPhillips 1,200,373 $78,660,442
Asset Management & Custody Banks—1.3%    
The Bank of New York Company, Inc. 2,150,000 $69,230,000
Diversified Banks—2.0%    
U.S. Bancorp 3,450,000 $106,536,000
Life & Health Insurance—1.5%    
AFLAC Incorporated 1,767,000 $81,900,450
Other Diversified Financial Services—4.4%    
JP Morgan Chase & Co. 2,800,000 $117,600,000
Citigroup, Inc. 2,400,000 115,776,000
   
    233,376,000
Thrifts & Mortgage Finance—4.8%    
Washington Mutual, Inc. 4,137,300 $188,578,134
MGIC Investment Corporation 1,090,600 70,889,000
   
    259,467,134

Name Shares Held/
Par Value
Market Value

Health Care Equipment—2.0%    
Baxter International, Inc. 2,900,000 $106,604,000
Pharmaceuticals—5.6%    
Bristol-Myers Squibb Company 4,500,000 $116,370,000
Abbott Laboratories 2,487,300 108,471,153
Schering-Plough Corporation 4,000,000 76,120,000
   
    300,961,153
Aerospace & Defense—3.6%    
Raytheon Company 2,650,000 $118,110,500
Honeywell International, Inc. 1,900,000 76,570,000
   
    194,680,500
Building Products—1.9%    
Masco Corporation 3,433,600 $101,771,904
Industrial Conglomerates—1.3%    
Tyco International Ltd. (b) 2,558,000 $70,345,000
Computer Hardware—5.0%    
Dell Inc. (a) 4,000,000 $97,640,000
Hewlett-Packard Company 2,925,000 92,664,000
Sun Microsystems, Inc. (a) 19,270,000 79,970,500
   
    270,274,500
Data Processing & Outsourced Services—2.2%    
First Data Corporation 2,575,000 $115,978,000
Office Electronics—1.4%    
Xerox Corporation (a) 5,272,400 $73,339,084
Semiconductors—3.6%    
Intel Corp. 5,700,000 $108,015,000
Texas Instruments Incorporated 2,800,000 84,812,000
   
    192,827,000
Total Common Stocks (Cost: $3,849,711,568)   5,064,538,660
     
Short Term Investments—5.5%    
U.S. Government Agencies—2.8%    
     
Fannie Mae, 4.96%-5.17% due 7/10/2006 - 7/27/2006 $150,000,000 $149,564,611
Total U.S. Government Agencies (Cost: $149,564,611)   149,564,611
     
Name Par Value Market Value

Repurchase Agreement—2.7%    
IBT Repurchase Agreement, 4.75% dated 6/30/2006
due 7/3/2006, repurchase price $147,194,339,
collateralized by Government National Mortgage
Association Bonds, with rates of 4.875% - 5.375%,
with maturities from 5/20/34 - 7/20/34, with an
aggregate market value plus accrued interest of
$52,500,000, and by Small Business Administration
Bonds, with rates of 7.125% - 8.260%, with maturities
from 7/25/2018 - 7/25/2030, and with an aggregate
market value plus accrued interest of $101,992,903
$147,136,098 $147,136,098
Total Repurchase Agreement (Cost: $147,136,098)   147,136,098
Total Short Term Investments (Cost: $296,700,709)   296,700,709
Total Investments (Cost $4,146,412,277)—100.0%   $5,361,239,369
Other Assets In Excess Of Other Liabilities—0.0%   1,508,170
   
Total Net Assets—100%   $5,362,747,539
   
(a) Non-income producing security.
(b) Represents a foreign domiciled corporation.
(c) Represents an American Depository Receipt.