MERRIMACK PHARMACEUTICALS IN - COM (MACK)

Q1 2015 13F Holders as of 31 Mar 2015

Type / Class
Equity / COM
Total 13F shares
69,076,442
Share change
+11,002,799
Total reported value
$820,155,731
Put/Call ratio
36%
Price per share
$11.88
Number of holders
150
Value change
+$131,278,601
Number of buys
73
Number of sells
60

Institutional Holders of MERRIMACK PHARMACEUTICALS IN - COM (MACK) as of Q1 2015

As of 31 Mar 2015, MERRIMACK PHARMACEUTICALS IN - COM (MACK) was held by 150 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 69,076,442 shares. The largest 10 holders included FMR LLC, VANGUARD GROUP INC, BlackRock Fund Advisors, STATE STREET CORP, WESTFIELD CAPITAL MANAGEMENT CO LP, TIAA CREF INVESTMENT MANAGEMENT LLC, BlackRock Institutional Trust Company, N.A., Lagoda Investment Management, L.P., DEUTSCHE BANK AG\, and TEACHERS ADVISORS INC. This page lists 150 institutional shareholders reporting positions in this security for the Q1 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.