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MRSN

Mersana Therapeutics

Delisted

MRSN was delisted on the 5th of January, 2026.

113 hedge funds and large institutions have $219M invested in Mersana Therapeutics in 2024 Q3 according to their latest regulatory filings, with 11 funds opening new positions, 39 increasing their positions, 32 reducing their positions, and 17 closing their positions.

New
Increased
Maintained
Reduced
Closed

22% more repeat investments, than reductions

Existing positions increased: 39 | Existing positions reduced: 32

0.05% more ownership

Funds ownership: 3.73%3.78% (+0.05%)

0% more funds holding in top 10

Funds holding in top 10: 11 (0)

4% less capital invested

Capital invested by funds: $230M → $219M (-$10.1M)

6% less funds holding

Funds holding: 120113 (-7)

35% less first-time investments, than exits

New positions opened: 11 | Existing positions closed: 17

37% less call options, than puts

Call options by funds: $770K | Put options by funds: $1.23M

Holders
113
Holders Change
-7
Holders Change %
-5.83%
% of All Funds
1.62%
Holding in Top 10
1
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
0.01%
New
11
Increased
39
Reduced
32
Closed
17
Calls
$770K
Puts
$1.23M
Net Calls
-$460K
Net Calls Change
-$704K
Name Holding Trade Value Shares
Change
Change in
Stake
SAM
101
Smartleaf Asset Management
Massachusetts
$9.72K +$5.91K +134 +176%
TRCT
102
Tower Research Capital (TRC)
New York
$8.25K -$64.2K -1,455 -89%
AB
103
Amalgamated Bank
New York
$7K
Osaic Holdings
104
Osaic Holdings
Arizona
$6.49K -$88 -2 -1%
Nisa Investment Advisors
105
Nisa Investment Advisors
Missouri
$5.92K -$25.9K -587 -82%
PMAM
106
Picton Mahoney Asset Management
Ontario, Canada
$4K +$3.22K +73 +270%
CFM
107
Catalyst Funds Management
Australia
$3.21K
NA
108
Nordwand Advisors
Pennsylvania
$2.83K
SCM
109
Sterling Capital Management
North Carolina
$442 +$397 +9 New
PNC Financial Services Group
110
PNC Financial Services Group
Pennsylvania
$378
Jones Financial Companies
111
Jones Financial Companies
Missouri
$370 +$353 +8 New
NSIM
112
North Star Investment Management
Illinois
$284
CPA
113
Capital Performance Advisors
California
$21
FFA
114
Frazier Financial Advisors
Ohio
$10
FFA
115
Farther Finance Advisors
California
$2
CAM
116
Cormorant Asset Management
Massachusetts
-$5.23M -104,000 Closed
AAA
117
Affinity Asset Advisors
New York
-$1.54M -30,680 Closed
BCM
118
Bridgeway Capital Management
Texas
-$956K -19,020 Closed
HF
119
HRT Financial
New York
-$521K -10,388 Closed
Marshall Wace
120
Marshall Wace
United Kingdom
-$354K -7,041 Closed
SCM
121
Superstring Capital Management
New York
-$221K -4,403 Closed
ECM
122
ExodusPoint Capital Management
New York
-$215K -4,287 Closed
State of Wisconsin Investment Board
123
State of Wisconsin Investment Board
Wisconsin
-$168K -3,344 Closed
JF
124
Jump Financial
Illinois
-$162K -3,222 Closed
AIM
125
Aigen Investment Management
New York
-$101K -2,003 Closed