MACK

Merrimack Pharmaceuticals, Inc.
MACK

Overview Fund Activity
Delisted

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

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45 hedge funds and large institutions have $50M invested in Merrimack Pharmaceuticals, Inc. in 2021 Q1 according to their latest regulatory filings, with 8 funds opening new positions, 17 increasing their positions, 5 reducing their positions, and 3 closing their positions.

Holders
45
Holders Change
+5
Holders Change %
+12.5%
% of All Funds
0.79%
Holding in Top 10
1
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.02%
New
8
Increased
17
Reduced
5
Closed
3
Calls
$669K
Puts
$991K
Net Calls
-$322K
Net Calls Change
-$3.16M

Top Buyers

1
Marshall Wace
1
Marshall Wace
United Kingdom
$576K
2
Susquehanna International Group
2
Susquehanna International Group
Pennsylvania
$668K
3
Vanguard Group
3
Vanguard Group
Pennsylvania
$3.89M
4
SC
4
Sepio Capital
Utah
$1.38M
5
Bank of New York Mellon
5
Bank of New York Mellon
New York
$265K

Top Sellers

1
NCM
1
Nantahala Capital Management
Connecticut
$3.82M
2
Two Sigma Advisers
2
Two Sigma Advisers
New York
$994K
3
Two Sigma Investments
3
Two Sigma Investments
New York
$1.36M
4
Dimensional Fund Advisors
4
Dimensional Fund Advisors
Texas
$3.26M
5
Citadel Advisors
5
Citadel Advisors
Florida
$130K
Name Market Value Shares Shares
Change 		Shares
Change %
NM
1
Newtyn Management
New York
$9.7M 1,548,883 – –
2L
2
22NW LP
Washington
$7.8M 1,241,896 – –
WSL
3
Western Standard LLC
California
$6.35M 1,011,571 – –
Vanguard Group
4
Vanguard Group
Pennsylvania
$3.89M 618,609 +27,987 +5%
NCM
5
Nantahala Capital Management
Connecticut
$3.82M 608,974 -142,869 -19%
BCM
6
Bronte Capital Management
Australia
$3.46M 550,679 +19,169 +4%
Dimensional Fund Advisors
7
Dimensional Fund Advisors
Texas
$3.26M 519,220 -31,319 -6%
BlackRock
8
BlackRock
New York
$1.61M 255,503 +3,572 +1%
SC
9
Sepio Capital
Utah
$1.38M 218,907 +25,431 +13%
Two Sigma Investments
10
Two Sigma Investments
New York
$1.36M 216,841 -50,714 -19%
Renaissance Technologies
11
Renaissance Technologies
New York
$1.18M 188,161 +11,300 +6%
WIM
12
Wittenberg Investment Management
Massachusetts
$1.17M 186,198 – –
Two Sigma Advisers
13
Two Sigma Advisers
New York
$994K 158,245 -61,865 -28%
Susquehanna International Group
14
Susquehanna International Group
Pennsylvania
$668K 106,329 +28,917 +37%
Marshall Wace
15
Marshall Wace
United Kingdom
$576K 91,766 +35,918 +64%
Geode Capital Management
16
Geode Capital Management
Massachusetts
$572K 91,208 +7,724 +9%
BCM
17
Bridgeway Capital Management
Texas
$403K 64,200 +2,500 +4%
YCM
18
Yakira Capital Management
Connecticut
$381K 60,634 – –
Bank of New York Mellon
19
Bank of New York Mellon
New York
$265K 42,225 +24,682 +141%
Northern Trust
20
Northern Trust
Illinois
$228K 36,213 +323 +0.9%
LPIC
21
LeJeune Puetz Investment Counsel
Michigan
$208K 4,200 – –
Citadel Advisors
22
Citadel Advisors
Florida
$130K 20,744 -1,199 -5%
Brown Advisory
23
Brown Advisory
Maryland
$94K 15,029 – –
VFA
24
Voya Financial Advisors
Connecticut
$85K 13,400 +13,400 New
Millennium Management
25
Millennium Management
New York
$77K 12,292 +12,292 New
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