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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 %
SIM
151
Sandia Investment Management
Massachusetts
$526K +$526K +10,000 New
EGM
152
Engineers Gate Manager
New York
$523K +$523K +9,937 New
SEI Investments
153
SEI Investments
Pennsylvania
$498K -$92.3K -1,755 -16%
AI
154
Allostery Investments
Connecticut
$473K -$6.08M -115,657 -93%
Walleye Capital
155
Walleye Capital
New York
$462K -$311K -5,914 -40%
Lazard Asset Management
156
Lazard Asset Management
New York
$441K +$441K +8,403 New
BG
157
Bellevue Group
Switzerland
$408K -$12.4K -235 -3%
AWM
158
Avior Wealth Management
Nebraska
$363K +$363K +6,909 New
VCP
159
Verus Capital Partners
Arizona
$363K +$363K +6,900 New
Polen Capital Management
160
Polen Capital Management
Florida
$307K +$307K +5,834 New
PNC Financial Services Group
161
PNC Financial Services Group
Pennsylvania
$305K +$105 +2 +0%
Mitsubishi UFJ Asset Management
162
Mitsubishi UFJ Asset Management
Japan
$282K -$38.8K -737 -12%
DnB Asset Management
163
DnB Asset Management
Norway
$280K -$195K -3,706 -41%
PAMP
164
Polar Asset Management Partners
Ontario, Canada
$271K -$413K -7,844 -60%
Osaic Holdings
165
Osaic Holdings
Arizona
$254K -$13.5K -322 -5%
AIM
166
Aigen Investment Management
New York
$247K +$247K +4,696 New
VF
167
Virtu Financial
New York
$233K +$233K +4,427 New
Wells Fargo
168
Wells Fargo
California
$226K +$136K +2,591 +152%
Qube Research & Technologies (QRT)
169
Qube Research & Technologies (QRT)
United Kingdom
$225K +$225K +4,275 New
Verition Fund Management
170
Verition Fund Management
Connecticut
$209K -$2.5M -47,469 -92%
US Bancorp
171
US Bancorp
Minnesota
$196K +$41.7K +792 +27%
AF
172
Avanza Fonder
Sweden
$165K +$20.4K +387 +14%
Mirae Asset Global Investments
173
Mirae Asset Global Investments
South Korea
$141K +$19K +362 +16%
FIA
174
FNY Investment Advisers
New York
$105K +$105K +2,004 New
GFM
175
GF Fund Management
China
$92.2K – – –
5 6
7
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