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Merus
MRUS

Overview Fund Activity

200 hedge funds and large institutions have $3.93B invested in Merus in 2025 Q2 according to their latest regulatory filings, with 47 funds opening new positions, 75 increasing their positions, 64 reducing their positions, and 30 closing their positions.

New
Increased
Maintained
Reduced
Closed
Holders
200
Holders Change
+15
Holders Change %
+8.11%
% of All Funds
2.68%
Holding in Top 10
21
Holding in Top 10 Change
+4
Holding in Top 10 Change %
+23.53%
% of All Funds
0.28%
New
47
Increased
75
Reduced
64
Closed
30
Calls
$41.5M
Puts
$31.7M
Net Calls
+$9.78M
Net Calls Change
-$3.16M

Top Buyers

1
T. Rowe Price Associates
T. Rowe Price Associates
Maryland
$119M
2
Ameriprise
Ameriprise
Minnesota
$59.6M
3
PBA
Paradigm Biocapital Advisors
New York
$225M
4
Adage Capital Partners
Adage Capital Partners
Massachusetts
$43.8M
5
Westfield Capital Management
Westfield Capital Management
Massachusetts
$107M

Top Sellers

1
SC
Samlyn Capital
New York
$40.2M
2
Wellington Management Group
Wellington Management Group
Massachusetts
$196M
3
CC
Commodore Capital
New York
$185M
4
BlackRock
BlackRock
New York
$55.3M
5
Millennium Management
Millennium Management
New York
$831K
Name Holding Trade Value Shares
Change 		Shares
Change %
Bank of Montreal
126
Bank of Montreal
Ontario, Canada
$1.16M +$463K +8,804 +66%
ACM
127
ADAR1 Capital Management
Texas
$963K -$2.56M -48,647 -73%
Zurich Cantonal Bank
128
Zurich Cantonal Bank
Switzerland
$955K +$252K +4,783 +36%
QC
129
Quadrature Capital
United Kingdom
$925K +$925K +17,573 New
YIH
130
Y-Intercept (HK)
Hong Kong
$885K +$885K +16,834 New
UOC
131
UBS O'Connor
Illinois
$879K -$396K -7,528 -31%
Millennium Management
132
Millennium Management
New York
$831K -$30M -570,638 -97%
SAM
133
Sectoral Asset Management
Quebec, Canada
$825K +$825K +15,675 New
Schroder Investment Management Group
134
Schroder Investment Management Group
United Kingdom
$799K -$933K -17,730 -54%
Hudson Bay Capital Management
135
Hudson Bay Capital Management
Connecticut
$765K +$765K +14,551 New
HCA
136
Harbour Capital Advisors
Virginia
$754K +$308K +5,780 +69%
ASRS
137
Arizona State Retirement System
Arizona
$741K +$21.6K +411 +3%
CUAMC
138
China Universal Asset Management Company
China
$731K +$2.26K +43 +0.3%
Envestnet Asset Management
139
Envestnet Asset Management
Illinois
$711K -$24.4K -464 -3%
AQR Capital Management
140
AQR Capital Management
Connecticut
$705K -$510K -9,696 -42%
KOCAA
141
Knights of Columbus Asset Advisors
Connecticut
$693K -$32.2K -613 -4%
Simplex Trading
142
Simplex Trading
Illinois
$689K +$689K +13,100 New
Teacher Retirement System of Texas
143
Teacher Retirement System of Texas
Texas
$686K +$7.1K +135 +1%
SCP
144
Sender Company & Partners
New York
$684K +$684K +12,996 New
Marshall Wace
145
Marshall Wace
United Kingdom
$651K -$13M -247,407 -95%
OAM
146
Oxford Asset Management
United Kingdom
$627K +$627K +11,915 New
JGC
147
J. Goldman & Co
New York
$622K – – –
Ensign Peak Advisors
148
Ensign Peak Advisors
Utah
$608K +$255K +4,850 +72%
GIM
149
Glenmede Investment Management
Pennsylvania
$606K +$606K +11,517 New
KK
150
KLP Kapitalforvaltning
Norway
$526K +$47.3K +900 +10%
4 5
6
7 8