Is ADPI a good stock to own? Find out who bought American Dental Partners, who sold American Dental Partners (ADPI) stock, and who holds a large position in American Dental Partners.

• AQR Capital Management owns 1.10M shares worth $20.75M
• Whippoorwill Associates, Incorporated owns 556106 shares worth $10.47M
• Millennium Management owns 450800 shares worth $8.49M
• Gabelli Funds owns 393000 shares worth $7.40M
• Hudson Bay Capital Management owns 392580 shares worth $7.39M
• Stadium Capital Management owns 345926 shares worth $6.51M
• Austin W. Marxe and David M. Greenhouse owns 291016 shares worth $5.48M
• STATE STREET CORPORATION owns 273796 shares worth $5.15M
• Oxford Asset Management owns 248722 shares worth $4.68M
• Loeb Arbitrage Management owns 232565 shares worth $4.38M
• Wolverine Asset Management owns 225490 shares worth $4.25M
• Diamondback Capital Management owns 215000 shares worth $4.05M
• STEVENS CAPITAL MANAGEMENT owns 196592 shares worth $3.70M
• GAMCO Asset Management owns 195000 shares worth $3.67M
• CNH Partners owns 159099 shares worth $3.00M
• Punch & Associates Investment Management owns 122180 shares worth $2.30M
• Renaissance Technologies owns 99900 shares worth $1.88M
• Technical Financial Services owns 95544 shares worth $1.80M
• Teton Advisors owns 75000 shares worth $1.41M
• P. SCHOENFELD ASSET MANAGEMENT owns 71595 shares worth $1.35M
• Gardner Lewis Asset Management owns 67425 shares worth $1.27M
• CalPERS owns 58430 shares worth $1.10M
• Geode Capital Management owns 50402 shares worth $949069
• Barclays owns 49701 shares worth $935869
• Visium Asset Management owns 40000 shares worth $752800
• Bridgeway Capital Management owns 37950 shares worth $714978
• David W. Seeley owns 36000 shares worth $677880
• Charles Schwab Investment Management owns 34100 shares worth $643126
• OTR - Nominee Name for The State Teachers Retirement Board of Ohio owns 31200 shares worth $586872
• Gabelli Securities owns 31000 shares worth $584040
• D. E. Shaw & Co owns 27381 shares worth $516131
• RHUMBLINE ADVISERS owns 22439 shares worth $422975
• Public Employees' Retirement Association of Colorado owns 18000 shares worth $338940
• OHIO PERS owns 17000 shares worth $319940

• Nomura Holdings sold on Dec. 31, 2011
• LSV Asset Management sold on Dec. 31, 2011
• Heartland Advisors sold on Sept. 30, 2011
• Thomson Horstmann & Bryant, Inc." sold on Sept. 30, 2011
• Vanguard sold on Sept. 30, 2011
• FIL sold on Sept. 30, 2011
• Park West Asset Management sold on Sept. 30, 2011
• Wells Fargo & Company sold on Sept. 30, 2011
• MCM Capital Management sold on Sept. 30, 2011
• Fifth Third Asset Management sold on Sept. 30, 2011
• TIAA-CREF Investment Management sold on Sept. 30, 2011
• ALLIANCEBERNSTEIN sold on Sept. 30, 2011
• Inves sold on Sept. 30, 2011
• American Century Companies sold on Sept. 30, 2011
• Two Sigma Advisers sold on Sept. 30, 2011
• Brown Brothers Harriman & Co. sold on June 30, 2011
• Ancient Art sold on June 30, 2011
• Johnson Investment Counsel sold on June 30, 2011
• Rice Hall James & Associates sold on June 30, 2011
• Deerfield Management Company sold on June 30, 2011
• Two Sigma Investments sold on June 30, 2011
• First Trust Advisors sold on June 30, 2011
• OppenheimerFunds sold on June 30, 2011
• Credit Suisse AG sold on June 30, 2011
• White Pine Capital sold on March 31, 2011
• FMR sold on Dec. 31, 2010
• Anthion Management sold on Dec. 31, 2010
• Wallace Capital Management sold on Dec. 31, 2010
• J P MORGAN CHASE & CO sold on Dec. 31, 2010
• Navellier & Associates sold on Dec. 31, 2005

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