Is RST a good stock to own? Find out who bought Rosetta Stone, who sold Rosetta Stone (RST) stock, and who holds a large position in Rosetta Stone.

• Nierenberg Investment Management Company owns 1.80M shares worth $22.27M
• Artisan Partners Holdings owns 1.62M shares worth $26.10M
• Allianz Global Investors of America owns 1.35M shares worth $13.91M
• Artisan Partners Limited Partnership owns 919900 shares worth $11.35M
• Ariel Investments owns 639228 shares worth $9.83M
• Anthion Management owns 445867 shares worth $3.40M
• Vanguard owns 436301 shares worth $6.71M
• Courage Capital Management owns 395446 shares worth $3.02M
• Renaissance Technologies owns 392100 shares worth $6.03M
• STATE STREET CORPORATION owns 159567 shares worth $2.46M
• Disciplined Growth Investors owns 145800 shares worth $2.24M
• Inves owns 138278 shares worth $2.13M
• Pomelo Capital owns 120908 shares worth $1.86M
• Barclays owns 106863 shares worth $816433
• Millennium Management owns 90294 shares worth $1.39M
• CalPERS owns 78300 shares worth $1.20M
• Wellington Management Company owns 75468 shares worth $1.16M
• PEAK6 Investments owns 74893 shares worth $1.15M
• Two Sigma Investments owns 64674 shares worth $994686
• Parametric Portfolio Associates owns 55089 shares worth $847268
• Jacobs Levy Equity Management owns 53480 shares worth $659943
• MANLEY ASSET MANAGEMENT L P owns 52000 shares worth $663000
• Frank Russell Company owns 45800 shares worth $546852
• TIAA-CREF Investment Management owns 42757 shares worth $657602
• CITADEL ADVISORS owns 42219 shares worth $322130
• Spark Investment Management owns 42100 shares worth $647077
• Bridgeway Capital Management owns 41400 shares worth $510876
• Charles Schwab Investment Management owns 40172 shares worth $604990
• PDT Partners owns 40103 shares worth $617185
• Geode Capital Management owns 38971 shares worth $598984

• Manulife Asset Management sold on Sept. 30, 2011
• Royal Bank of Canada sold on Sept. 30, 2011
• GOLDMAN SACHS sold on Sept. 30, 2011
• Scopus Asset Management sold on June 30, 2011
• J. Goldman & Co sold on March 31, 2011
• American Century Companies sold on March 31, 2011
• Credit Suisse AG sold on March 31, 2011
• STONEBRIDGE CAPITAL MANAGEMENT sold on March 31, 2011
• S.A.C. Capital Advisors sold on March 31, 2011
• UBS AG sold on March 31, 2011
• Tiger Consumer Management sold on Dec. 31, 2010
• TAMRO Capital Partners sold on Dec. 31, 2010
• FIRST NATIONAL BANK OF OMAHA sold on Dec. 31, 2010
• William Blair $ Company sold on Dec. 31, 2010

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• Rosetta Stone (RST)