UK markets closed

Merrimack Pharmaceuticals, Inc. (MACK)

NasdaqGM - NasdaqGM Real-time price. Currency in USD
Add to watchlist
15.12+0.05 (+0.33%)
At close: 04:00PM EDT
15.12 0.00 (0.00%)
After hours: 07:43PM EDT
Insider roster
Insider transactions

Major holders

Currency in USD
Breakdown
1.21%% of shares held by all insiders
66.21%% of shares held by institutions
67.02%% of float held by institutions
97Number of institutions holding shares

Top institutional holders

HolderSharesDate reported% outValue
Western Standard, LLC2,172,51330 Dec 202314.95%32,848,396
Newtyn Management, Llc1,873,69430 Dec 202312.89%28,330,253
Blackrock Inc.743,62330 Dec 20235.12%11,243,579
Vanguard Group Inc608,95430 Dec 20234.19%9,207,384
Madison Avenue Partners, LP553,08530 Dec 20233.81%8,362,645
Adar1 Capital Management, LLC 549,41830 Dec 20233.78%8,307,200
Dimensional Fund Advisors LP435,64530 Dec 20233.00%6,586,952
Sepio Capital, LP306,68030 Dec 20232.11%4,637,001
Sio Capital Management, LLC288,46630 Dec 20231.99%4,361,605
Geode Capital Management, LLC259,94630 Dec 20231.79%3,930,383

Top mutual fund holders

HolderSharesDate reported% outValue
Vanguard Total Stock Market Index Fund318,12830 Dec 20232.19%4,810,095
Invesco ETF Tr II-Invesco DWA Small Cap Momentum ETF263,09830 Mar 20241.81%3,978,041
iShares Russell 2000 ETF253,91430 Mar 20241.75%3,839,179
Vanguard Extended Market Index Fund203,39830 Dec 20231.40%3,075,377
DFA U.S. Micro Cap Series145,15830 Jan 20241.00%2,194,788
DFA U.S. Small Cap Series108,25930 Jan 20240.74%1,636,876
Fidelity Small Cap Index Fund105,37428 Feb 20240.73%1,593,254
iShares Russell 2000 Growth ETF89,22630 Mar 20240.61%1,349,097
Fidelity Extended Market Index Fund83,81530 Mar 20240.58%1,267,282
Dimensional ETF Tr-Dimensional U.S. Targeted Value ETF58,60630 Jan 20240.40%886,122