Our Terms of Service and Privacy Policy have changed.

By continuing to use this site, you are agreeing to the new Privacy Policy and Terms of Service.

Mast Therapeutics Inc (NYSE MKT LLC:MSTX)

BATS BZX Real-Time Price
As of 2:13pm ET
 -0.006 / -4.88%
Today’s Change
Today|||52-Week Range
Institutional investors control 10.57% 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 June 2016, these large investors purchased a net $2.7 million shares.
Other institutional5.86%
Mutual fund holders4.71%
Individual stakeholders0.22%

Largest Quarterly Institutional

Latest Institutional Activity

6/30/2016THE VANGUARD GROUP, INC.  Bought 923.5 Thousand shares of Mast Therapeutics Inc
6/30/2016RENAISSANCE TECHNOLOGIES LLC  Bought 809.7 Thousand shares of Mast Therapeutics Inc
6/30/2016GEODE CAPITAL MANAGEMENT LLC  Bought 334.4 Thousand shares of Mast Therapeutics Inc

Top 10 Owners of Mast Therapeutics Inc

Total value ($)Shares
bought / sold
The Vanguard Group, Inc.2.83%5,996,0472,632,265+923,507+18.21%
Baker Bros. Advisors LP1.83%3,868,0261,698,063-929,416-19.37%
BVF Partners LP1.74%3,696,9611,622,96600.00%
Franklin Advisers, Inc.0.64%1,350,600592,91300.00%
Pine River Capital Management LP0.59%1,250,000548,75000.00%
Geode Capital Management LLC0.48%1,012,559444,513+334,443+49.32%
Renaissance Technologies LLC0.39%831,162364,880+809,692+3,771.27%
Auriga Capital Management LLC0.27%576,937253,275+576,937--
Perkins Capital Management, Inc.0.26%559,750245,730-3,750-0.67%
GRT Capital Partners LLC0.21%449,084197,148-132,802-22.82%

Top 10 Mutual Funds Holding Mast Therapeutics Inc

Mutual fundStakeShares
Total value ($)Shares
bought / sold
Vanguard Total Stock Market Index...1.81%3,834,3071,683,261+97,600+2.61%
Vanguard Extended Market Index Fu...1.09%2,310,7981,014,440+235,725+11.36%
Fidelity Spartan Extended Market ...0.41%865,921380,13900.00%
FTIF SICAV - Biotechnology Discov...0.35%740,373325,02400.00%
Franklin Biotechnology Discovery ...0.29%610,227267,89000.00%
Auriga Investors - Montserrat Glo...0.27%576,937253,275+576,937--
Goodwood SMID Cap Discovery Fund0.17%350,000153,650+225,000+180.00%
ACEVO Global Healthcare Absolute ...0.11%230,000100,970+230,000--
Fidelity Spartan Total Market Ind...0.07%146,63864,37400.00%
Vanguard Total Stock Market Index...0.05%102,90045,17300.00%