Institutional investors control 28.09% 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 September 2014, these large investors purchased a net $23.0 million shares.
Mutual fund holders
Largest Quarterly Institutional Transactions
Latest Institutional Activity
BVF PARTNERS LP Bought 7.3 Million shares of Mast Therapeutics Inc
ALYESKA INVESTMENT GROUP LP Bought 4.7 Million shares of Mast Therapeutics Inc
SABBY CAPITAL LLC Bought 3.5 Million shares of Mast Therapeutics Inc