Institutional investors control 19.25% 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 $5.3 million shares.
Mutual fund holders
Largest Quarterly Institutional Transactions
Latest Institutional Activity
SABBY CAPITAL LLC Bought 4.7 Million shares of Mast Therapeutics Inc
PINE RIVER CAPITAL MANAGEMENT LP Bought 625.0 Thousand shares of Mast Therapeutics Inc