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Mast Therapeutics Inc (NYSE MKT LLC:MSTX)

Delayed Data
As of Apr 28
 -0.0092 / -2.97%
Today’s Change
Today|||52-Week Range
Institutional investors control 21.40% of the outstanding shares in MSTX. This represents a greater percentage of ownership than at almost any other company in the Biotechnology industry. Additionally, during the quarter ended December 2015, these large investors purchased a net $2.9 million shares.
Mutual fund holders4.66%
Other institutional16.74%
Individual stakeholders0.24%

Largest Quarterly Institutional

Latest Institutional Activity

2/10/2016SABBY CAPITAL LLC  Bought 11.3 Million shares of Mast Therapeutics Inc
3/31/2016CREATIVE PLANNING, INC.  Bought 139.5 Thousand shares of Mast Therapeutics Inc
3/31/2016PERKINS CAPITAL MANAGEMENT, INC.  Sold 3.8 Thousand shares of Mast Therapeutics Inc

Top 10 Owners of Mast Therapeutics Inc

Total value ($)Shares
bought / sold
Sabby Capital LLC9.98%19,251,2505,255,591+11,294,277+141.94%
Baker Bros. Advisors LP2.49%4,797,4421,309,702+89,978+1.91%
The Vanguard Group, Inc.2.26%4,353,4241,188,485+247,160+6.02%
Franklin Advisers, Inc.2.01%3,870,8771,056,749-6,282,123-61.87%
BVF Partners LP1.92%3,696,9611,009,270-1,407,107-27.57%
Pine River Capital Management LP0.65%1,250,000341,25000.00%
Geode Capital Management LLC0.35%678,116185,12600.00%
GRT Capital Partners LLC0.30%581,886158,85500.00%
Perkins Capital Management, Inc.0.29%563,500153,836-3,750-0.66%
Ancora Advisors LLC0.21%400,000109,200+263,289+192.59%

Top 10 Mutual Funds Holding Mast Therapeutics Inc

Mutual fundStakeShares
Total value ($)Shares
bought / sold
Vanguard Total Stock Market Index...1.60%3,092,777844,328+81,500+2.71%
FTIF SICAV - Biotechnology Discov...1.10%2,117,880578,181-3,251,220-60.55%
Vanguard Extended Market Index Fu...0.91%1,761,106480,782+98,497+5.92%
Franklin Biotechnology Discovery ...0.32%610,227166,592-1,140,393-65.14%
Fidelity Spartan Extended Market ...0.28%531,478145,09300.00%
Goodwood SMID Cap Discovery Fund0.10%200,00054,600-101,317-33.62%
OCP International0.08%150,00040,95000.00%
Fidelity Spartan Total Market Ind...0.08%146,63840,03200.00%
Vanguard Total Stock Market Index...0.05%102,90028,09200.00%
Vanguard Balanced Index Fund0.05%88,37724,12700.00%