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Notable Holders of Stamps.com, Inc. (STMP)

  |   Expand Research on STMP   |   * Does Not Fully Represent All Holders
Fund Title Shares % Owned Source
BlackRock Fund Advisors COM NEW 1,230,570 7.60% 13F
BlackRock Institutional Trust Company, N.A. COM NEW 407,523 2.52% 13F
WEATHERBIE M A & CO INC/MA COM 369,298 2.28% 13F
PEAK6 Investments, L.P. (PUT) COM NEW 179,200 1.11% 13F
RUSSELL FRANK CO/ Common Stocks 170,668 1.05% 13F
TEACHERS ADVISORS INC CS 157,683 0.97% 13F
GW CAPITAL INC COM NEW 111,192 0.69% 13F
BATTERYMARCH FINANCIAL MANAGEMENT INC COM NEW 95,172 0.59% 13F
BlackRock Investment Management, LLC COM NEW 81,741 0.51% 13F
OLD MUTUAL ASSET MANAGERS UK LTD COM NEW 56,132 0.35% 13F
Marshall Wace North America, L.P. COMMON STOCK 53,001 0.33% 13F
Emerald Acquisition Ltd. Common Stocks 49,293 0.30% 13F
Elk Creek Partners, LLC COM NEW 47,023 0.29% 13F
PIONEER INVESTMENT MANAGEMENT INC COM NEW 41,342 0.26% 13F
Keane Capital Partners, LLC COM NEW 36,000 0.22% 13F
TIAA CREF INVESTMENT MANAGEMENT LLC CS 33,097 0.20% 13F
Shinko Asset Management Co., Ltd. COM NEW 31,288 0.19% 13F
BlackRock Group LTD COM NEW 31,272 0.19% 13F
AHL Partners LLP COM NEW 28,084 0.17% 13F
Airain ltd Com 23,810 0.15% 13F
SPOT TRADING L.L.C. (PUT) COM NEW 21,600 0.13% 13F
MANAGED ACCOUNT ADVISORS LLC COM NEW 20,674 0.13% 13F
Thrax Management, LLC COM NEW 20,000 0.12% 13F
Aperio Group, LLC COM NEW 13,622 0.08% 13F
VIRGINIA RETIREMENT SYSTEM COM NEW 12,900 0.08% 13F
Fox Point Capital Management LLC COM NEW 12,500 0.08% 13F
GENEVA INVESTMENT MANAGEMENT OF CHICAGO LLC COM 10,481 0.06% 13F
BLACKROCK ADVISORS LLC COM NEW 8,673 0.05% 13F
Spot Trading L.L.C (CALL) COM NEW 8,600 0.05% 13F
ROYAL BANK OF CANADA \ COM NEW 5,929 0.04% 13F
Glen Harbor Capital Management LLC COM 5,644 0.03% 13F
BKS ADVISORS, LLC COM NEW 5,099 0.03% 13F
DIALECTIC CAPITAL MANAGEMENT, LLC (CALL) COM NEW 5,000 0.03% 13F
Meadow Creek Investment Management LLC COM 4,648 0.03% 13F
CAPSTONE ASSET MANAGEMENT CO COM 4,414 0.03% 13F
NEW CENTURY INVESTMENT MANAGEMENT, INC COM NEW 4,100 0.03% 13F
Elkfork Partners LLC COM 3,652 0.02% 13F
OPPENHEIMER FUNDS INC COM NEW 3,593 0.02% 13F
NATIONAL PENN INVESTORS TRUST CO /PA Domestic Common 3,490 0.02% 13F
INTEGRAL DERIVATIVES, LLC COM 3,464 0.02% 13F
Xact Kapitalforvaltning AB COM 3,372 0.02% 13F
Jump Trading, LLC Common Stock 3,019 0.02% 13F
Tyers Asset Management LLC COM 2,656 0.02% 13F
SOCIETE GENERALE COM 2,116 0.01% 13F
CenterStar Fund, LLC (CALL) COM NEW 2,100 0.01% 13F
SMITH ASSET MANAGEMENT GROUP LP Common Stock - Long 1,965 0.01% 13F
RIVERHEAD CAPITAL MANAGEMENT LLC COM 1,851 0.01% 13F