MACK - Merrimack Pharmaceuticals, Inc.

NasdaqGM - NasdaqGM Real Time 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, LLC888,620Dec 30, 20186.66%3,430,073
22NW, LP749,302Dec 30, 20185.62%2,892,305
BVF Inc.721,935Dec 30, 20185.41%2,786,669
Dimensional Fund Advisors LP570,818Dec 30, 20184.28%2,203,357
Sepio Capital, LLC411,676Dec 30, 20183.09%1,589,069
TIAA-CREF Investment Management, LLC402,457Dec 30, 20183.02%1,553,484
Clearline Capital, LP316,425Dec 30, 20182.37%1,221,400
Blackrock Inc.256,175Dec 30, 20181.92%988,835
Wittenberg Investment Management, Inc.222,467Dec 30, 20181.67%858,722
Vanguard Group, Inc. (The)218,757Dec 30, 20181.64%844,402

Top Mutual Fund Holders

HolderSharesDate Reported% OutValue
College Retirement Equities Fund-Stock Account379,439Sep 29, 20182.84%2,022,409
Vanguard Total Stock Market Index Fund305,759Sep 29, 20182.29%1,629,695
DFA U.S. Micro Cap Series216,523Oct 30, 20181.62%842,274
Vanguard Extended Market Index Fund185,083Sep 29, 20181.39%986,492
DFA Tax Managed U.S. Targeted Value Port152,166Oct 30, 20181.14%591,925
Fidelity Extended Market Index Fund57,524Feb 27, 20190.43%351,471
Bridgeway Funds Inc-Ultra Small Company Market Fund45,100Sep 29, 20180.34%240,383
Federated MDT Small Cap Core Fund39,100Dec 30, 20180.29%150,926
iShares Micro Cap ETF31,626Feb 27, 20190.24%193,234
Vanguard Health Care Index Fund28,258Aug 30, 20180.21%167,287