Mast Therapeutics, Inc. Institutional Ownership

MSTX 
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0.02
3.7%
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Exchange: AMEX
Industry: Health Care
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Ownership Summary Institutional Holdings Insiders
(SEC Form 4)
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Ownership Summary


Institutional Ownership 31.20%
Total Shares Outstanding (millions) 159
Total Value of Holdings (millions) $27

Active Positions

Holders Shares
Increased Positions 20 25,830,645
Decreased Positions 12 469,747
Held Positions 16 23,450,322
Total Institutional Shares 48 49,750,714

New and Sold Out Positions


Holders Shares
New Positions 12 21,987,824
Sold Out Positions 5 233,957

48 Institutional Holders
49,750,714 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)
FRANKLIN RESOURCES INC 12/31/2014 11,946,100 0 0.00 6,451
BVF INC/IL 12/31/2014 7,291,600 7,291,600 New 3,937
BAKER BROS. ADVISORS LP 12/31/2014 4,774,434 1,774,434 59.15 2,578
ALYESKA INVESTMENT GROUP, L.P. 12/31/2014 4,678,855 4,678,855 New 2,527
SABBY MANAGEMENT, LLC 12/31/2014 3,539,779 3,539,779 New 1,911
VANGUARD GROUP INC 12/31/2014 3,382,483 571,692 20.34 1,827
MPM ASSET MANAGEMENT LLC 12/31/2014 2,551,851 0 0.00 1,378
PROQUEST ASSOCIATES IV LLC 12/31/2014 2,551,851 2,551,851 New 1,378
DEUTSCHE BANK AG\ 12/31/2014 1,915,800 1,140,200 147.01 1,035
SPHERA FUNDS MANAGEMENT LTD. 12/31/2014 1,374,900 1,374,900 New 742
PERKINS CAPITAL MANAGEMENT INC 12/31/2014 1,150,000 1,150,000 New 621
DEERFIELD MANAGEMENT CO 12/31/2014 700,000 700,000 New 378
PINE RIVER CAPITAL MANAGEMENT L.P. 12/31/2014 687,500 0 0.00 371
GRT CAPITAL PARTNERS LLC 12/31/2014 581,886 0 0.00 314
GEODE CAPITAL MANAGEMENT, LLC 12/31/2014 560,868 0 0.00 303

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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