MERRIMACK PHARMACEUTICALS IN - COM (MACK)

Q4 2015 13F Holders as of 31 Dec 2015

Type / Class
Equity / COM
Total 13F shares
80,737,699
Share change
+3,387,781
Total reported value
$637,303,477
Put/Call ratio
248%
Price per share
$7.90
Number of holders
135
Value change
+$24,889,046
Number of buys
67
Number of sells
59

Institutional Holders of MERRIMACK PHARMACEUTICALS IN - COM (MACK) as of Q4 2015

As of 31 Dec 2015, MERRIMACK PHARMACEUTICALS IN - COM (MACK) was held by 135 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 80,737,699 shares. The largest 10 holders included FMR LLC, VANGUARD GROUP INC, WESTFIELD CAPITAL MANAGEMENT CO LP, BlackRock Fund Advisors, TIAA CREF INVESTMENT MANAGEMENT LLC, STATE STREET CORP, BlackRock Institutional Trust Company, N.A., TEACHERS ADVISORS INC, PUTNAM INVESTMENTS LLC, and Lagoda Investment Management, L.P.. This page lists 135 institutional shareholders reporting positions in this security for the Q4 2015 filing period.
Investor Option Weight % Change % Value $ * Price Shares Share Change Activity Report Period
* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.