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Notable Holders of Optimer Pharmaceuticals, Inc. (OPTR)

  |   Expand Research on OPTR   |   * Does Not Fully Represent All Holders
Fund Title Shares % Owned Source
Fidelity Investments 6,031,673 12.93% 13D
ALGER FRED MANAGEMENT INC COMMON 3,899,753 8.36% 13F
SECTORAL ASSET MANAGEMENT INC COMMON 2,817,555 6.04% 13F
VANGUARD GROUP INC COM 2,039,703 4.37% 13F
PRICE T ROWE ASSOCIATES INC /MD/ COMM STK 1,549,782 3.32% 13F
BlackRock Fund Advisors COM 1,200,505 2.57% 13F
TCW GROUP INC COM 1,169,012 2.51% 13F
BlackRock Institutional Trust Company, N.A. COM 1,133,842 2.43% 13F
MANNING & NAPIER ADVISORS LLC COM 901,820 1.93% 13F
S Squared Technology, LLC COM 769,300 1.65% 13F
Wellington COM 613,388 1.32% 13F
NORTHERN TRUST CORP COM 598,909 1.28% 13F
TURNER INVESTMENT PARTNERS INC COM 346,760 0.74% 13F
GREEN ARROW CAPITAL MANAGEMENT LLC COM 300,000 0.64% 13F
UBS GLOBAL ASSET MANAGEMENT AMERICAS INC EQTY US OTC 262,557 0.56% 13F
DEUTSCHE BANK AG\ COM 258,332 0.55% 13F
TIAA CREF INVESTMENT MANAGEMENT LLC COM 253,684 0.54% 13F
Citadel CMN 251,317 0.54% 13F
DIMENSIONAL FUND ADVISORS LP COM 234,767 0.50% 13F
PIONEER INVESTMENT MANAGEMENT INC COMMSTCK 211,500 0.45% 13F
TFS CAPITAL LLC COM 187,605 0.40% 13F
ING INVESTMENT MANAGEMENT CO COM 176,240 0.38% 13F
JEFFERIES GROUP INC /DE/ (CALL) COM 167,000 0.36% 13F
Weiss Multi-Strategy Advisers LLC COM 165,000 0.35% 13F
PERCEPTIVE ADVISORS LLC COM 150,000 0.32% 13F
BlackRock Investment Management, LLC COM 136,410 0.29% 13F
TEACHERS ADVISORS INC COM 135,924 0.29% 13F
GEODE CAPITAL MANAGEMENT LLC COM 116,837 0.25% 13F
MILLENNIUM MANAGEMENT LLC COM 115,251 0.25% 13F
RENAISSANCE TECHNOLOGIES LLC COM 108,126 0.23% 13F
WELLS FARGO & CO/MN EQUITY 96,339 0.21% 13F
AMERIPRISE FINANCIAL INC COM 90,415 0.19% 13F
BARCLAYS PLC (PUT) OPT 90,000 0.19% 13F
Goldman Sachs Asset Management, L.P. CMN 89,257 0.19% 13F
MORGAN STANLEY COM 68,783 0.15% 13F
GRT CAPITAL PARTNERS LLC COM 61,487 0.13% 13F
FIRST QUADRANT L P/CA COM 46,500 0.10% 13F
CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM * OPTIMER 44,430 0.10% 13F
Numeric Investors LLC COMM 40,400 0.09% 13F
SAC Capital COMMON 39,283 0.08% 13F
Manulife Asset Management (North America) Ltd COM 35,613 0.08% 13F
AMERICAN INTERNATIONAL GROUP INC COM 33,853 0.07% 13F
BLACKROCK ADVISORS LLC COM 31,360 0.07% 13F
CREDIT SUISSE AG/ COM 30,865 0.07% 13F
UNITED SERVICES AUTOMOBILE ASSOCIATION COMMON 30,200 0.06% 13F
FIRST MERCANTILE TRUST CO COMMON STOCK USD.001 30,029 0.06% 13F
PRINCIPAL FINANCIAL GROUP INC COM 23,667 0.05% 13F
TD ASSET MANAGEMENT INC COM 14,500 0.03% 13F
SCHWAB CHARLES INVESTMENT MANAGEMENT INC COM 13,324 0.03% 13F
COMERICA BANK COM 13,298 0.03% 13F
PARAMETRIC PORTFOLIO ASSOCIATES Common Stock 11,320 0.02% 13F
Spot Trading L.L.C (CALL) COM 11,000 0.02% 13F
Quantbot Technologies LLC COM 9,535 0.02% 13F
GAM Holding Ltd. 7,000 0.02% 13F
SYSTEMATIC FINANCIAL MANAGEMENT LP 5,380 0.01% 13F