Institutional investors purchased a net $1.6 million shares of MACK during the quarter ended June 2016, and now own 68.38% of the total float, a percentage that is typical for companies in the Biotechnology industry.
Mutual fund holders
Largest Quarterly Institutional Transactions
Latest Institutional Activity
SIMPLEX TRADING LLC Bought 67.3 Thousand shares of Merrimack Pharmaceuticals...
CREATIVE PLANNING, INC. Bought 16.9 Thousand shares of Merrimack Pharmaceuticals...