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 holders
Largest Quarterly Institutional Transactions
Latest Institutional Activity
SABBY CAPITAL LLC Bought 11.3 Million shares of Mast Therapeutics Inc
CREATIVE PLANNING, INC. Bought 139.5 Thousand shares of Mast Therapeutics Inc
PERKINS CAPITAL MANAGEMENT, INC. Sold 3.8 Thousand shares of Mast Therapeutics Inc