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

Institutional Holders (2015Q1)
Portfolio Summary: 146 Institutional holders with a total value of $2,432,366,037.
#
Manager Name
Shares
Value ($)
%
Options
Notes
1 NEA Management Company, LLC 9,854,255 565,634,000 23.25%
2 WELLINGTON MANAGEMENT GROUP LLP 4,264,704 244,795,000 10.06%
3 FMR LLC 3,985,015 228,740,000 9.40%
4 PRICE T ROWE ASSOCIATES INC /MD/ 3,538,524 203,111,000 8.35%
5 ORBIMED ADVISORS LLC 2,057,700 118,112,000 4.86%
6 VANGUARD GROUP INC 1,582,465 90,834,000 3.73%
7 ALLIANCEBERNSTEIN L.P. 1,110,951 63,769,000 2.62%
8 PERCEPTIVE ADVISORS LLC 978,359 56,158,000 2.31%
9 HealthCor Management, L.P. 925,000 53,095,000 2.18%
10 BB BIOTECH AG 854,582 49,053,000 2.02%
11 Point72 Asset Management, L.P. 814,900 46,775,000 1.92%
12 BlackRock Fund Advisors 802,525 46,065,000 1.89%
13 LORD, ABBETT & CO. LLC 713,404 40,949,000 1.68%
14 STATE STREET CORP 701,524 40,267,000 1.66%
15 BlackRock Institutional Trust Company, N.A. 605,628 34,763,000 1.43%
16 FRANKLIN RESOURCES INC 570,100 32,724,000 1.35%
17 ORACLE INVESTMENT MANAGEMENT INC 556,379 31,936,000 1.31%
18 SUSQUEHANNA INTERNATIONAL GROUP, LLP 528,400 30,330,000 1.25% Put
19 HealthCor Management, L.P. 500,000 28,700,000 1.18% Put
20 MILLENNIUM MANAGEMENT LLC 488,034 28,013,000 1.15%
21 SUSQUEHANNA INTERNATIONAL GROUP, LLP 364,200 20,905,000 0.86% Call
22 MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 346,057 19,863,671 0.82%
23 PUTNAM INVESTMENTS LLC 333,361 19,135,000 0.79%
24 DEUTSCHE BANK AG\ 294,437 16,898,000 0.69%
25 D. E. Shaw & Co., Inc. 286,035 16,419,000 0.68%
26 NORTHERN TRUST CORP 260,649 14,961,000 0.62%
27 JENNISON ASSOCIATES LLC 250,247 14,364,000 0.59%
28 Rock Springs Capital Management LP 210,000 12,054,000 0.50%
29 EverPoint Asset Management, LLC 200,000 11,480,000 0.47%
30 CITIGROUP INC 194,270 11,151,000 0.46%
31 Cormorant Asset Management, LP 191,250 10,978,000 0.45%
32 LOOMIS SAYLES & CO L P 180,946 10,386,000 0.43%
33 AMERIPRISE FINANCIAL INC 172,268 9,889,000 0.41%
34 GEODE CAPITAL MANAGEMENT, LLC 155,192 8,908,000 0.37%
35 WELLS FARGO & COMPANY/MN 153,861 8,831,000 0.36%
36 RENAISSANCE TECHNOLOGIES LLC 148,704 8,536,000 0.35%
37 Candriam S.C.A. 140,000 8,038,000 0.33%
38 Bank of New York Mellon Corp 139,105 7,985,000 0.33%
39 MACQUARIE GROUP LTD 131,483 7,547,000 0.31%
40 AMUNDI ASSET MANAGEMENT US, INC. 129,230 7,418,000 0.30%
41 TEACHERS ADVISORS, LLC 128,206 7,359,000 0.30%
42 TWO SIGMA INVESTMENTS, LP 123,129 7,068,000 0.29%
43 TIAA CREF INVESTMENT MANAGEMENT LLC 112,520 6,459,000 0.27%
44 FRED ALGER MANAGEMENT, LLC 109,988 6,313,000 0.26%
45 GUGGENHEIM CAPITAL LLC 109,450 6,282,000 0.26%
46 EVENTIDE ASSET MANAGEMENT, LLC 87,700 5,034,000 0.21%
47 TD ASSET MANAGEMENT INC 86,606 4,971,000 0.20%
48 OXFORD ASSET MANAGEMENT LLP 79,851 4,583,000 0.19%
49 Informed Momentum Co LLC 68,548 3,935,000 0.16%
50 Invesco Ltd. 68,223 3,916,000 0.16%
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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.