TESARO, Inc. Institutional Ownership

TSRO 
$61.72
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1.11
1.83%
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Exchange: NASDAQ
Industry: Health Care
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Ownership Summary Institutional Holdings Insiders
(SEC Form 4)
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Ownership Summary


Institutional Ownership 99.74%
Total Shares Outstanding (millions) 40
Total Value of Holdings (millions) $2,418

Active Positions

Holders Shares
Increased Positions 89 8,353,982
Decreased Positions 42 4,368,022
Held Positions 13 27,173,753
Total Institutional Shares 144 39,895,757

New and Sold Out Positions


Holders Shares
New Positions 39 1,057,603
Sold Out Positions 7 264,927

89 Increased Institutional Holders
8,353,982 Increased Total Shares Held


Click on the column header links to resort ascending (▲) or descending (▼).
Owner Name Date Shared Held Change (Shares) Change (%) Value (in 1,000s)
FMR LLC 03/31/2015 3,985,015 2,759,121 225.07 241,532
PRICE T ROWE ASSOCIATES INC /MD/ 03/31/2015 3,538,524 1,007,985 39.83 214,470
ORBIMED ADVISORS LLC 03/31/2015 2,057,700 727,700 54.71 124,717
VANGUARD GROUP INC 03/31/2015 1,582,465 606,320 62.11 95,913
PERCEPTIVE ADVISORS LLC 03/31/2015 978,359 95,000 10.75 59,298
BB BIOTECH AG 03/31/2015 854,582 150,000 21.29 51,796
POINT72 ASSET MANAGEMENT, L.P. 03/31/2015 814,900 198,491 32.20 49,391
BLACKROCK FUND ADVISORS 03/31/2015 802,525 80,051 11.08 48,641
LORD, ABBETT & CO. LLC 03/31/2015 713,404 564,263 378.34 43,239
BLACKROCK INSTITUTIONAL TRUST COMPANY, N.A. 03/31/2015 605,628 269,500 80.18 36,707
MASSACHUSETTS FINANCIAL SERVICES CO /MA/ 03/31/2015 346,057 10,591 3.16 20,975
D. E. SHAW & CO., INC. 03/31/2015 286,035 243,431 571.38 17,337
NORTHERN TRUST CORP 03/31/2015 260,649 7,249 2.86 15,798
JENNISON ASSOCIATES LLC 03/31/2015 250,247 250,247 New 15,167
ROCK SPRINGS CAPITAL MANAGEMENT LP 03/31/2015 210,000 22,500 12 12,728

Institutional Holdings information for this company is filed by major institutions on form 13-F with the Securities and Exchange Commission.
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