TESARO, Inc. Institutional Ownership

TSRO 
$25.37
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0.19
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0.74%
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*Delayed - data as of Apr. 17, 2014 15:10 ET 
Exchange: NASDAQ
Industry: Health Care
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Company Details

Institutional Ownership
Type Value
Total Shares Out Standing (millions): 36
Market Capitalization ($ millions): $687
Institutional Ownership: 74.65%
Price (as of 03/31/2014) 25.56

Ownership Summary

Ownership Analysis # of Holders Shares
Total Shares Held: 107 26,867,631
New Positions: 13 1,374,272
Increased Positions: 47 2,432,784
Decreased Positions: 49 2,237,890
Holders With Activity: 96 4,670,674
Sold Out Positions: 14 267,197

Institutional Holdings information for TSRO is filed by major institutions on form 13-F with the Securities and Exchange Commission. Learn more about the information on this page in the help area for Institutional Holdings.

13 New Institutional Holders
1,374,272 New 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)
RA CAPITAL MANAGEMENT, LLC 12/31/2013 700,000 700,000 New 17,892
CORMORANT ASSET MANAGEMENT, LLC 12/31/2013 300,000 300,000 New 7,668
VISIUM ASSET MANAGEMENT, LP 12/31/2013 200,255 200,255 New 5,119
ROCK SPRINGS CAPITAL MANAGEMENT LP 12/31/2013 58,250 58,250 New 1,489
HBK INVESTMENTS L P 12/31/2013 34,700 34,700 New 887
FORWARD MANAGEMENT, LLC 12/31/2013 19,920 19,920 New 509
GROUP ONE TRADING, L.P. 12/31/2013 17,973 17,973 New 459
IGUANA HEALTHCARE MANAGEMENT, LLC 12/31/2013 15,000 15,000 New 383
BAIRD ROBERT W & CO INC /WI/ 12/31/2013 11,202 11,202 New 286
MARSHALL WACE NORTH AMERICA, L.P. 12/31/2013 9,721 9,721 New 248
PANAGORA ASSET MANAGEMENT INC 12/31/2013 6,828 6,828 New 175
THOMPSON DAVIS & CO., INC. 12/31/2013 250 250 New 6
BNP PARIBAS ARBITRAGE, SA 12/31/2013 173 173 New 4