MACK - Merrimack Pharmaceuticals, Inc.

NasdaqGM - NasdaqGM Real Time Price. Currency in USD

Major Holders

Currency in USD
Breakdown
5.36%% of Shares Held by All Insider
56.26%% of Shares Held by Institutions
59.45%% of Float Held by Institutions
107Number of Institutions Holding Shares

Top Institutional Holders

HolderSharesDate Reported% OutValue
FMR, LLC1,596,423Dec 30, 201711.96%16,858,227
Blackrock Inc.813,041Dec 30, 20176.09%8,585,713
Vanguard Group, Inc. (The)653,931Dec 30, 20174.90%6,905,511
TIAA-CREF Investment Management, LLC551,350Dec 30, 20174.13%5,822,256
Rubric Capital Management LP410,244Dec 30, 20173.07%4,332,176
Franklin Resources, Inc369,625Dec 30, 20172.77%3,903,240
Newtyn Management, LLC362,335Dec 30, 20172.72%3,826,257
State Street Corporation219,665Dec 30, 20171.65%2,319,662
Millennium Management LLC204,566Dec 30, 20171.53%2,160,217
Dimensional Fund Advisors LP201,325Dec 30, 20171.51%2,125,992

Top Mutual Fund Holders

HolderSharesDate Reported% OutValue
Fidelity Growth Company Fund506,147Jan 30, 20183.79%5,744,768
College Retirement Equities Fund-Stock Account482,903Jun 29, 20173.62%6,132,868
Fidelity Select Portfolios - Biotechnology283,346Jan 30, 20182.12%3,215,977
iShares Russell 2000 ETF256,099Jan 30, 20181.92%2,906,723
Vanguard Total Stock Market Index Fund196,996Jun 29, 20171.48%2,501,849
Vanguard Extended Market Index Fund157,468Jun 29, 20171.18%1,999,843
Fidelity Blue Chip Growth Fund148,188Jan 30, 20181.11%1,681,933
Franklin Strategic Series-Franklin Biotechnology Discove140,219Jul 30, 20171.05%1,836,868
Fidelity Series Growth Company Fund137,660Jan 30, 20181.03%1,562,441
Vanguard Small-Cap Index Fund120,648Jun 29, 20170.90%1,532,229