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TESARO INC
TESARO INC. Institutional holdings reported to the SEC.

Institutional Holders (2014Q1)
Portfolio Summary: 99 Institutional holders with a total value of $937,906,189.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 NEA Management Company, LLC 9,854,255 290,503,000 30.97%
2 WELLINGTON MANAGEMENT GROUP LLP 3,707,235 109,290,000 11.65%
3 PRICE T ROWE ASSOCIATES INC /MD/ 1,772,153 52,243,000 5.57%
4 HealthCor Management, L.P. 1,400,000 41,272,000 4.40%
5 FMR LLC 1,325,194 39,067,000 4.17%
6 ALLIANCEBERNSTEIN L.P. 1,277,305 37,655,000 4.01%
7 PERCEPTIVE ADVISORS LLC 1,230,070 36,262,000 3.87%
8 ORBIMED ADVISORS LLC 847,800 24,993,000 2.66%
9 VANGUARD GROUP INC 814,889 24,023,000 2.56%
10 FRANKLIN RESOURCES INC 800,300 23,593,000 2.52%
11 STATE STREET CORP 719,960 21,230,000 2.26%
12 RA CAPITAL MANAGEMENT, L.P. 700,000 20,636,000 2.20%
13 ORACLE INVESTMENT MANAGEMENT INC 633,752 18,683,009 1.99%
14 ADAGE CAPITAL PARTNERS GP, L.L.C. 615,000 18,130,000 1.93%
15 BB BIOTECH AG 604,582 17,823,000 1.90%
16 BlackRock Fund Advisors 576,261 16,988,000 1.81%
17 MILLENNIUM MANAGEMENT LLC 494,416 14,575,000 1.55%
18 APEX CAPITAL, LLC 325,000 9,581,000 1.02%
19 Cormorant Asset Management, LP 300,000 8,844,000 0.94%
20 NORTHERN TRUST CORP 220,087 6,488,000 0.69%
21 Visium Asset Management, LP 206,323 6,083,000 0.65%
22 AMERIPRISE FINANCIAL INC 196,894 5,805,000 0.62%
23 Invesco Ltd. 195,566 5,765,000 0.61%
24 BlackRock Institutional Trust Company, N.A. 191,334 5,641,000 0.60%
25 LORD, ABBETT & CO. LLC 157,857 4,654,000 0.50%
26 WELLS FARGO & COMPANY/MN 157,598 4,646,000 0.50%
27 SUSQUEHANNA INTERNATIONAL GROUP, LLP 156,600 4,617,000 0.49% Put
28 PUTNAM INVESTMENTS LLC 133,000 3,921,000 0.42%
29 Rock Springs Capital Management LP 129,500 3,818,000 0.41%
30 AQR CAPITAL MANAGEMENT LLC 118,556 3,495,000 0.37%
31 GEODE CAPITAL MANAGEMENT, LLC 105,773 3,118,000 0.33%
32 TIAA CREF INVESTMENT MANAGEMENT LLC 104,226 3,073,000 0.33%
33 DEUTSCHE BANK AG\ 102,483 3,019,000 0.32%
34 SABBY MANAGEMENT, LLC 98,500 2,904,000 0.31%
35 CITADEL ADVISORS LLC 90,410 2,665,000 0.28%
36 OXFORD ASSET MANAGEMENT LLP 89,897 2,650,000 0.28%
37 SUSQUEHANNA INTERNATIONAL GROUP, LLP 75,200 2,217,000 0.24% Call
38 COLUMBUS CIRCLE INVESTORS 71,678 2,113,000 0.23%
39 Bank of New York Mellon Corp 68,552 2,020,000 0.22%
40 MASON STREET ADVISORS, LLC 68,400 2,016,000 0.21%
41 TD ASSET MANAGEMENT INC 53,206 1,569,000 0.17%
42 Iguana Healthcare Management, LLC 50,000 1,474,000 0.16%
43 PDT Partners, LLC 42,618 1,256,000 0.13%
44 SUFFOLK CAPITAL MANAGEMENT LLC 42,500 1,253,000 0.13%
45 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 41,696 1,230,000 0.13%
46 BlackRock Investment Management, LLC 40,939 1,207,000 0.13%
47 MACQUARIE GROUP LTD 40,680 1,199,000 0.13%
48 ArrowMark Colorado Holdings LLC 39,258 1,157,000 0.12%
49 BANK OF AMERICA CORP /DE/ 38,975 1,149,000 0.12%
50 D. E. Shaw & Co., Inc. 37,040 1,092,000 0.12%
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From 2023-01-03 onward, the SEC requires values to be reported in nearest dollars. Earlier filings reported values in thousands; therefore, positions shown as $0 in older filings may represent actual values between $0–$999.