Notable Holders of Optimer Pharmaceuticals, Inc. (OPTR)
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* 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 |
