Notable Holders of MERRIMACK PHARM (MACK)

  |   Expand Research on MACK   |   * Does Not Fully Represent All Holders
Fund Title Shares % Owned Source
BlackRock Fund Advisors COM 6,837,786 6.61% 13F
BlackRock Institutional Trust Company, N.A. COM 3,206,460 3.10% 13F
BlackRock Investment Management, LLC COM 469,494 0.45% 13F
BLACKROCK ADVISORS LLC COM 280,279 0.27% 13F
UBS AG COM 157,790 0.15% 13F
KCG Holdings, Inc. COM 89,020 0.09% 13F
BlackRock Group LTD COM 73,274 0.07% 13F
NORTHERN TRUST CO OF CONNECTICUT COM 25,287 0.02% 13F
Manulife Asset Management (North America) Ltd COM 10,347 0.01% 13F