MACK

Merrimack Pharmaceuticals, Inc.
MACK

Overview Fund Activity
Delisted

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

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50 hedge funds and large institutions have $91M invested in Merrimack Pharmaceuticals, Inc. in 2023 Q1 according to their latest regulatory filings, with 10 funds opening new positions, 14 increasing their positions, 9 reducing their positions, and 7 closing their positions.

Holders
50
Holders Change
+3
Holders Change %
+6.38%
% of All Funds
0.8%
Holding in Top 10
2
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-33.33%
% of All Funds
0.03%
New
10
Increased
14
Reduced
9
Closed
7
Calls
$6.79M
Puts
$3.96M
Net Calls
+$2.84M
Net Calls Change
-$20K

Top Buyers

1
MAP
1
Madison Avenue Partners
New York
$6.8M
2
Invesco
2
Invesco
Georgia
$2.59M
3
WSL
3
Western Standard LLC
California
$20.6M
4
NM
4
Newtyn Management
New York
$23M
5
Marshall Wace
5
Marshall Wace
United Kingdom
$1.21M

Top Sellers

1
2L
1
22NW LP
Washington
$0
2
Vanguard Group
2
Vanguard Group
Pennsylvania
$5.64M
3
Susquehanna International Group
3
Susquehanna International Group
Pennsylvania
$1.71M
4
O
4
OrbiMed
New York
$0
5
PVI
5
Pura Vida Investments
New York
$0
Name Market Value Shares Shares
Change 		Shares
Change %
NM
1
Newtyn Management
New York
$23M 1,873,694 +105,300 +6%
WSL
2
Western Standard LLC
California
$20.6M 1,672,463 +142,969 +9%
MAP
3
Madison Avenue Partners
New York
$6.8M 553,085 +553,085 New
Dimensional Fund Advisors
4
Dimensional Fund Advisors
Texas
$5.73M 466,140 -5,233 -1%
Vanguard Group
5
Vanguard Group
Pennsylvania
$5.64M 458,521 -129,500 -22%
SC
6
Sepio Capital
Utah
$3.62M 294,545 – –
SCM
7
Sio Capital Management
New York
$3.35M 272,843 +22,843 +9%
BlackRock
8
BlackRock
New York
$2.73M 222,253 +12,495 +6%
Invesco
9
Invesco
Georgia
$2.59M 210,507 +210,507 New
WIM
10
Wittenberg Investment Management
Massachusetts
$2.43M 197,994 +6,800 +4%
NCM
11
Nantahala Capital Management
Connecticut
$2.35M 191,266 -18,734 -9%
Susquehanna International Group
12
Susquehanna International Group
Pennsylvania
$1.71M 138,995 -116,341 -46%
Geode Capital Management
13
Geode Capital Management
Massachusetts
$1.6M 130,164 -4,062 -3%
BFM
14
Boothbay Fund Management
New York
$1.44M 117,436 +53,225 +83%
Marshall Wace
15
Marshall Wace
United Kingdom
$1.21M 98,255 +98,255 New
Bank of New York Mellon
16
Bank of New York Mellon
New York
$920K 74,880 – –
YCM
17
Yakira Capital Management
Connecticut
$886K 72,118 -13,614 -16%
Morgan Stanley
18
Morgan Stanley
New York
$666K 54,160 +44,997 +491%
State Street
19
State Street
Massachusetts
$621K 50,556 +1,700 +3%
Millennium Management
20
Millennium Management
New York
$494K 40,204 +23,219 +137%
Jane Street
21
Jane Street
New York
$459K 37,307 +37,307 New
Goldman Sachs
22
Goldman Sachs
New York
$429K 34,898 +20,756 +147%
BCM
23
Bridgeway Capital Management
Texas
$420K 34,200 – –
Northern Trust
24
Northern Trust
Illinois
$343K 27,948 +2,126 +8%
Brown Advisory
25
Brown Advisory
Maryland
$185K 15,029 – –
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