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

Institutional Holders (2014Q2)
Portfolio Summary: 108 Institutional holders with a total value of $1,003,414,291.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 NEA Management Company, LLC 9,854,255 306,566,000 30.55%
2 WELLINGTON MANAGEMENT GROUP LLP 4,359,831 135,635,000 13.52%
3 PRICE T ROWE ASSOCIATES INC /MD/ 2,474,339 76,977,000 7.67%
4 HealthCor Management, L.P. 1,475,000 45,887,000 4.57%
5 ALLIANCEBERNSTEIN L.P. 1,377,670 42,859,000 4.27%
6 FMR LLC 1,225,894 38,138,000 3.80%
7 VANGUARD GROUP INC 828,226 25,766,000 2.57%
8 FRANKLIN RESOURCES INC 800,300 24,897,000 2.48%
9 STATE STREET CORP 746,747 23,230,000 2.32%
10 BB BIOTECH AG 704,582 21,920,000 2.18%
11 PERCEPTIVE ADVISORS LLC 636,956 19,816,000 1.97%
12 ORACLE INVESTMENT MANAGEMENT INC 633,752 19,716,025 1.96%
13 BlackRock Fund Advisors 629,667 19,589,000 1.95%
14 GOLDMAN SACHS GROUP INC 592,119 18,421,000 1.84%
15 APEX CAPITAL, LLC 340,400 10,590,000 1.06%
16 PUTNAM INVESTMENTS LLC 333,964 10,390,000 1.04%
17 ADAGE CAPITAL PARTNERS GP, L.L.C. 300,000 9,333,000 0.93%
18 Cormorant Asset Management, LP 300,000 9,333,000 0.93%
19 BlackRock Institutional Trust Company, N.A. 244,122 7,595,000 0.76%
20 AMERIPRISE FINANCIAL INC 223,874 6,965,000 0.69%
21 MILLENNIUM MANAGEMENT LLC 207,636 6,460,000 0.64%
22 NORTHERN TRUST CORP 207,283 6,448,000 0.64%
23 WELLS FARGO & COMPANY/MN 201,353 6,265,000 0.62%
24 Invesco Ltd. 196,497 6,113,000 0.61%
25 FRED ALGER MANAGEMENT, LLC 176,800 5,500,000 0.55%
26 Rock Springs Capital Management LP 165,000 5,133,000 0.51%
27 SUSQUEHANNA INTERNATIONAL GROUP, LLP 152,100 4,732,000 0.47% Put
28 LORD, ABBETT & CO. LLC 149,124 4,639,000 0.46%
29 Numeric Investors LLC 148,332 4,615,000 0.46%
30 DEUTSCHE BANK AG\ 148,334 4,612,000 0.46%
31 TIAA CREF INVESTMENT MANAGEMENT LLC 134,077 4,171,000 0.42%
32 COLUMBUS CIRCLE INVESTORS 123,697 3,848,000 0.38%
33 SUSQUEHANNA INTERNATIONAL GROUP, LLP 111,207 3,460,000 0.34%
34 GEODE CAPITAL MANAGEMENT, LLC 110,697 3,443,000 0.34%
35 Bank of New York Mellon Corp 109,367 3,403,000 0.34%
36 TEACHERS ADVISORS, LLC 107,968 3,359,000 0.33%
37 PERCEPTIVE ADVISORS LLC 100,000 3,111,000 0.31% Put
38 BARCLAYS PLC 90,000 2,790,000 0.28% Call
39 SUFFOLK CAPITAL MANAGEMENT LLC 79,033 2,459,000 0.25%
40 MASON STREET ADVISORS, LLC 68,400 2,128,000 0.21%
41 Alyeska Investment Group, L.P. 65,928 2,051,000 0.20%
42 CITADEL ADVISORS LLC 63,118 1,963,000 0.20%
43 AQR CAPITAL MANAGEMENT LLC 62,556 1,946,000 0.19%
44 TD ASSET MANAGEMENT INC 57,806 1,798,000 0.18%
45 MACQUARIE GROUP LTD 57,656 1,794,000 0.18%
46 Rhenman & Partners Asset Management AB 55,000 1,711,000 0.17%
47 BlackRock Investment Management, LLC 52,537 1,634,000 0.16%
48 Jefferies Group LLC 50,000 1,556,000 0.16% Put
49 Iguana Healthcare Management, LLC 50,000 1,556,000 0.16%
50 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 47,716 1,485,000 0.15%
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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.