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

• Conestoga Capital Advisors owns 788961 shares worth $19.70M
• Disciplined Growth Investors owns 732070 shares worth $18.28M
• Alydar Partners owns 700000 shares worth $19.52M
• Ameriprise Financial owns 692474 shares worth $17.08M
• M A WEATHERBIE & CO owns 651182 shares worth $16.26M
• Columbus Circle Investors owns 650987 shares worth $16.06M
• Vanguard owns 601659 shares worth $15.03M
• William Blair $ Company owns 593313 shares worth $13.73M
• Manatuck Hill Partners owns 576000 shares worth $16.06M
• Shannon River Fund Management owns 553400 shares worth $13.82M
• Ardsley Advisory Partners owns 525000 shares worth $12.95M
• Turner Investments owns 476432 shares worth $11.02M
• Next Century Growth Investors owns 418753 shares worth $10.55M
• Roxbury Capital Management owns 377615 shares worth $9.87M
• WEISS MULTI-STRATEGY ADVISERS owns 350879 shares worth $9.78M
• Renaissance Technologies owns 336200 shares worth $8.39M
• Oxford Asset Management owns 312781 shares worth $7.72M
• STATE STREET CORPORATION owns 259787 shares worth $6.48M
• Cortina Asset Management owns 254401 shares worth $6.35M
• Diamond Hill Capital Management owns 232990 shares worth $5.82M
• Oberweis Asset Management owns 214102 shares worth $5.35M
• Pier Capital owns 208494 shares worth $5.45M
• Wellington Management Company owns 204278 shares worth $5.70M
• Century Capital Management owns 180361 shares worth $4.50M
• Archon Capital Management owns 176628 shares worth $4.41M
• Allianz Asset Management AG owns 168300 shares worth $3.89M
• Absolute Return Capital, LLC* owns 160998 shares worth $4.06M
• Teton Advisors owns 155438 shares worth $3.88M
• Gabelli Funds owns 149000 shares worth $3.72M
• Rice Hall James & Associates owns 137804 shares worth $3.19M
• Inves owns 132254 shares worth $3.69M
• Driehaus Capital Management owns 120576 shares worth $3.15M
• Portolan Capital Management owns 113875 shares worth $2.84M
• GAMCO Asset Management owns 113800 shares worth $2.97M
• American Century Companies owns 112235 shares worth $2.77M

• PEAK6 Investments sold on Sept. 30, 2011
• Eudaimonia Asset Management sold on Sept. 30, 2011
• Sarbit Advisory Services sold on June 30, 2011
• Keane Capital Management sold on June 30, 2011
• NUMERIC INVESTORS sold on June 30, 2011
• Franklin Resources sold on June 30, 2011
• Cramer Rosenthal McGlynn sold on June 30, 2011
• Mohnish Pabrai sold on March 31, 2008
• LaGrange Capital Administration sold on June 30, 2007
• Axial Capital Management sold on Dec. 31, 2006
• Public Employees' Retirement Association of Colorado sold on Sept. 30, 2006

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