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Mersana Therapeutics
MRSN

Overview Fund Activity

128 hedge funds and large institutions have $144M invested in Mersana Therapeutics in 2023 Q3 according to their latest regulatory filings, with 26 funds opening new positions, 35 increasing their positions, 43 reducing their positions, and 45 closing their positions.

Holders
128
Holders Change
-19
Holders Change %
-12.93%
% of All Funds
2.04%
Holding in Top 10
1
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.02%
New
26
Increased
35
Reduced
43
Closed
45
Calls
$1.57M
Puts
$76K
Net Calls
+$1.49M
Net Calls Change
-$14.3M

Top Buyers

1
EC
1
EcoR1 Capital
California
$24.6M
2
VA
2
VR Adviser
New York
$14.4M
3
SCM
3
Silverarc Capital Management
Massachusetts
$6.35M
4
AAA
4
Affinity Asset Advisors
New York
$3.62M
5
PCM
5
Philosophy Capital Management
California
$2.98M

Top Sellers

1
O
1
OrbiMed
New York
$0
2
ACA
2
Avoro Capital Advisors
New York
$0
3
APM
3
Avidity Partners Management
Texas
$0
4
AG
4
Artal Group
Luxembourg
$0
5
DM
5
Deerfield Management
New York
$0
Name Market Value Shares Shares
Change 		Shares
Change %
Daiwa Securities Group
126
Daiwa Securities Group
Japan
$1K 401 – –
FIA
127
FNY Investment Advisers
New York
$1K 1,100 +1,100 New
NSIM
128
North Star Investment Management
Illinois
$190 150 – –
O
129
OrbiMed
New York
– – -7,214,937 Closed
ACA
130
Avoro Capital Advisors
New York
– – -6,375,000 Closed
APM
131
Avidity Partners Management
Texas
– – -3,790,000 Closed
AG
132
Artal Group
Luxembourg
– – -3,029,555 Closed
DM
133
Deerfield Management
New York
– – -2,885,400 Closed
LGM
134
Logos Global Management
California
– – -2,800,000 Closed
CS
135
Candriam SCA
Luxembourg
– – -2,415,477 Closed
RG
136
Redmile Group
California
– – -1,698,626 Closed
Hudson Bay Capital Management
137
Hudson Bay Capital Management
Connecticut
– – -962,359 Closed
RI
138
RTW Investments
New York
– – -614,838 Closed
Ameriprise
139
Ameriprise
Minnesota
– – -572,273 Closed
First Manhattan
140
First Manhattan
New York
– – -569,594 Closed
RAM
141
Readystate Asset Management
Illinois
– – -567,300 Closed
KCM
142
Kennedy Capital Management
Missouri
– – -555,279 Closed
Adage Capital Partners
143
Adage Capital Partners
Massachusetts
– – -500,000 Closed
TLP
144
Tri Locum Partners
New York
– – -428,307 Closed
SFM
145
Sphera Funds Management
Israel
– – -418,562 Closed
Squarepoint
146
Squarepoint
New York
– – -418,224 Closed
Rafferty Asset Management
147
Rafferty Asset Management
New York
– – -336,656 Closed
SSA
148
Schonfeld Strategic Advisors
New York
– – -320,540 Closed
AG
149
Algert Global
California
– – -219,846 Closed
Qube Research & Technologies (QRT)
150
Qube Research & Technologies (QRT)
United Kingdom
– – -204,106 Closed
4 5
6
7 8