MACK

Merrimack Pharmaceuticals, Inc.
MACK

Overview Fund Activity
Delisted

MACK was delisted on the 17th of May, 2024.

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47 hedge funds and large institutions have $81.2M invested in Merrimack Pharmaceuticals, Inc. in 2022 Q4 according to their latest regulatory filings, with 12 funds opening new positions, 14 increasing their positions, 11 reducing their positions, and 6 closing their positions.

Holders
47
Holders Change
+6
Holders Change %
+14.63%
% of All Funds
0.76%
Holding in Top 10
3
Holding in Top 10 Change
+2
Holding in Top 10 Change %
+200%
% of All Funds
0.05%
New
12
Increased
14
Reduced
11
Closed
6
Calls
$6.49M
Puts
$3.64M
Net Calls
+$2.86M
Net Calls Change
+$2.79M

Top Buyers

1
WSL
1
Western Standard LLC
California
$17.5M
2
SCM
2
Sio Capital Management
New York
$2.87M
3
Susquehanna International Group
3
Susquehanna International Group
Pennsylvania
$2.93M
4
O
4
OrbiMed
New York
$843K
5
BFM
5
Boothbay Fund Management
New York
$736K

Top Sellers

1
Point72 Asset Management
1
Point72 Asset Management
Connecticut
$0
2
NCM
2
Nantahala Capital Management
Connecticut
$2.41M
3
2L
3
22NW LP
Washington
$11.6M
4
YCM
4
Yakira Capital Management
Connecticut
$982K
5
Vanguard Group
5
Vanguard Group
Pennsylvania
$6.74M
Name Market Value Shares Shares
Change 		Shares
Change %
NM
1
Newtyn Management
New York
$20.3M 1,768,394 +1,300 +0.1%
WSL
2
Western Standard LLC
California
$17.5M 1,529,494 +357,031 +30%
2L
3
22NW LP
Washington
$11.6M 1,015,048 -215,966 -18%
Vanguard Group
4
Vanguard Group
Pennsylvania
$6.74M 588,021 -19,783 -3%
SC
5
Sepio Capital
Utah
$3.38M 294,545 – –
Susquehanna International Group
6
Susquehanna International Group
Pennsylvania
$2.93M 255,336 +213,718 +514%
SCM
7
Sio Capital Management
New York
$2.87M 250,000 +250,000 New
NCM
8
Nantahala Capital Management
Connecticut
$2.41M 210,000 -219,596 -51%
BlackRock
9
BlackRock
New York
$2.4M 209,758 +2,975 +1%
WIM
10
Wittenberg Investment Management
Massachusetts
$2.19M 191,194 +2,500 +1%
Geode Capital Management
11
Geode Capital Management
Massachusetts
$1.54M 134,226 +33,418 +33%
YCM
12
Yakira Capital Management
Connecticut
$982K 85,732 -30,089 -26%
Bank of New York Mellon
13
Bank of New York Mellon
New York
$858K 74,880 +33,929 +83%
O
14
OrbiMed
New York
$843K 73,600 +73,600 New
BFM
15
Boothbay Fund Management
New York
$736K 64,211 +64,211 New
PVI
16
Pura Vida Investments
New York
$735K 64,100 +64,100 New
State Street
17
State Street
Massachusetts
$560K 48,856 +2,300 +5%
Two Sigma Investments
18
Two Sigma Investments
New York
$487K 42,490 +20,971 +97%
Belvedere Trading
19
Belvedere Trading
Illinois
$447K 38,990 +18,938 +94%
BCM
20
Bridgeway Capital Management
Texas
$392K 34,200 – –
Northern Trust
21
Northern Trust
Illinois
$296K 25,822 +1,842 +8%
Millennium Management
22
Millennium Management
New York
$195K 16,985 +16,985 New
Brown Advisory
23
Brown Advisory
Maryland
$172K 15,029 – –
Goldman Sachs
24
Goldman Sachs
New York
$162K 14,142 +14,142 New
Two Sigma Advisers
25
Two Sigma Advisers
New York
$128K 11,181 -7,500 -40%
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