Notable Holders of TESARO (TSRO)
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* Does Not Fully Represent All Holders
| Fund | Title | Shares | % Owned | Source |
|---|---|---|---|---|
| BlackRock Fund Advisors | COM | 1,721,313 | 4.78% | 13F |
| BlackRock Institutional Trust Company, N.A. | COM | 833,116 | 2.31% | 13F |
| JANUS CAPITAL MANAGEMENT LLC | COM | 633,512 | 1.76% | 13F |
| BLACKROCK ADVISORS LLC | COM | 474,777 | 1.32% | 13F |
| RUSSELL FRANK CO/ | Common Stocks | 282,162 | 0.78% | 13F |
| BlackRock Group LTD | COM | 280,959 | 0.78% | 13F |
| Emerald Acquisition Ltd. | Common Stocks | 153,334 | 0.43% | 13F |
| BlackRock Investment Management, LLC | COM | 130,834 | 0.36% | 13F |
| City Financial Investment Co Ltd | COM | 87,600 | 0.24% | 13F |
| BLUE JAY CAPITAL MANAGEMENT, LLC | COMMON STOCKS | 67,490 | 0.19% | 13F |
| GLG LLC | COM | 58,563 | 0.16% | 13F |
| FT Options LLC (PUT) | COM | 31,000 | 0.09% | 13F |
| Iguana Healthcare Management, LLC | COM | 25,000 | 0.07% | 13F |
| IRONBRIDGE CAPITAL MANAGEMENT LP | COM | 22,211 | 0.06% | 13F |
| GLG Partners LP | COM | 20,186 | 0.06% | 13F |
| NORTHERN TRUST CO OF CONNECTICUT | COM | 18,662 | 0.05% | 13F |
| Cupps Capital Management, LLC | COM | 17,209 | 0.05% | 13F |
| KCG Holdings, Inc. | COM | 16,248 | 0.05% | 13F |
| Spot Trading L.L.C (PUT) | COM | 15,200 | 0.04% | 13F |
| March Altus Capital Management LP | COM | 10,000 | 0.03% | 13F |
| EverPoint Asset Management, LLC | COM | 7,500 | 0.02% | 13F |
| PEAK6 Investments, L.P. (PUT) | COM | 7,400 | 0.02% | 13F |
| ROYAL BANK OF CANADA \ | COM | 6,477 | 0.02% | 13F |
| MANAGED ACCOUNT ADVISORS LLC | COM | 6,037 | 0.02% | 13F |
| UBS AG | COM | 6,037 | 0.02% | 13F |
| Century Capital Management, LLC | COM | 4,844 | 0.01% | 13F |
| INTEGRAL DERIVATIVES, LLC (PUT) | COM | 4,500 | 0.01% | 13F |
| Delta Lloyd Asset Management N.V. | COM | 4,497 | 0.01% | 13F |
| CenterStar Fund, LLC (CALL) | COM | 3,800 | 0.01% | 13F |
