MACK - Merrimack Pharmaceuticals, Inc.

NasdaqGM - NasdaqGM Delayed Price. Currency in USD

Major Holders

Currency in USD
Breakdown
4.09%% of Shares Held by All Insider
57.26%% of Shares Held by Institutions
59.71%% of Float Held by Institutions
64Number of Institutions Holding Shares

Top Institutional Holders

HolderSharesDate Reported% OutValue
Newtyn Management, LLC1,144,583Mar 30, 20198.58%7,954,851
22NW, LP1,092,263Mar 30, 20198.19%7,591,227
Dimensional Fund Advisors LP653,992Mar 30, 20194.90%4,545,244
Western Standard, LLC425,359Mar 30, 20193.19%2,956,245
TIAA-CREF Investment Management, LLC402,457Mar 30, 20193.02%2,797,076
Blackrock Inc.254,831Mar 30, 20191.91%1,771,075
Vanguard Group, Inc. (The)224,930Mar 30, 20191.69%1,563,263
Wittenberg Investment Management, Inc.216,118Mar 30, 20191.62%1,502,020
Connor Clark & Lunn Investment Management Ltd161,774Mar 30, 20191.21%1,124,329
Shaw D.E. & Co., Inc.106,643Mar 30, 20190.80%741,168

Top Mutual Fund Holders

HolderSharesDate Reported% OutValue
College Retirement Equities Fund-Stock Account379,439Sep 29, 20182.84%2,022,409
DFA U.S. Micro Cap Series216,523Jan 30, 20191.62%1,201,702
Vanguard Extended Market Index Fund185,083Dec 30, 20181.39%714,420
DFA Tax Managed U.S. Targeted Value Port88,063Jan 30, 20190.66%488,749
DFA U.S. Small Cap Series66,628Jan 30, 20190.50%369,785
Fidelity Extended Market Index Fund57,524Apr 29, 20190.43%376,206
Invesco ETF Tr-Invesco FTSE RAFI US 1500 Small-Mid ETF55,787Apr 29, 20190.42%364,846
DFA U.S. Core Equity 2 Portfolio44,194Jan 30, 20190.33%245,276
iShares Micro Cap ETF30,811Apr 29, 20190.23%201,503
DFA U.S. Core Equity 1 Portfolio29,023Jan 30, 20190.22%161,077