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MRSN

Mersana Therapeutics

Delisted

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

120 hedge funds and large institutions have $230M invested in Mersana Therapeutics in 2024 Q2 according to their latest regulatory filings, with 20 funds opening new positions, 44 increasing their positions, 36 reducing their positions, and 22 closing their positions.

New
Increased
Maintained
Reduced
Closed

22% more repeat investments, than reductions

Existing positions increased: 44 | Existing positions reduced: 36

19% more call options, than puts

Call options by funds: $1.5M | Put options by funds: $1.26M

0.14% less ownership

Funds ownership: 3.87%3.73% (-0.14%)

9% less first-time investments, than exits

New positions opened: 20 | Existing positions closed: 22

2% less funds holding

Funds holding: 122120 (-2)

50% less funds holding in top 10

Funds holding in top 10: 21 (-1)

56% less capital invested

Capital invested by funds: $526M → $230M (-$297M)

Holders
120
Holders Change
-2
Holders Change %
-1.64%
% of All Funds
1.73%
Holding in Top 10
1
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-50%
% of All Funds
0.01%
New
20
Increased
44
Reduced
36
Closed
22
Calls
$1.5M
Puts
$1.26M
Net Calls
+$244K
Net Calls Change
+$2.23M
Name Holding Trade Value Shares
Change
Change in
Stake
Ameriprise
76
Ameriprise
Minnesota
$91.5K +$80K +1,106 +154%
Invesco
77
Invesco
Georgia
$90.6K -$808K -11,174 -86%
AG
78
Algert Global
California
$90K +$129K +1,786 New
ETC
79
Exchange Traded Concepts
Oklahoma
$87.3K -$39K -540 -24%
TRCT
80
Tower Research Capital (TRC)
New York
$81.9K +$115K +1,597 +4,839%
VOYA Investment Management
81
VOYA Investment Management
Georgia
$77.6K +$6K +83 +6%
Simplex Trading
82
Simplex Trading
Illinois
$77K +$88.5K +1,224 +380%
New York State Common Retirement Fund
83
New York State Common Retirement Fund
New York
$74.8K +$217 +3 +0.2%
UBS Group
84
UBS Group
Switzerland
$70.3K -$737K -10,188 -88%
Walleye Trading
85
Walleye Trading
New York
$63.4K
State Board of Administration of Florida Retirement System
86
State Board of Administration of Florida Retirement System
Florida
$57.9K +$4.05K +56 +5%
Citigroup
87
Citigroup
New York
$51.4K -$1.13M -15,571 -94%
PWLP
88
Prio Wealth Limited Partnership
Massachusetts
$47.3K
Group One Trading
89
Group One Trading
Illinois
$47.2K +$67.9K +939 New
JRP
90
Jasper Ridge Partners
California
$46.4K
Ohio Public Employees Retirement System (OPERS)
91
Ohio Public Employees Retirement System (OPERS)
Ohio
$41.4K +$59.5K +823 New
A
92
AJOVista
Massachusetts
$41.1K +$59.2K +819 New
Principal Financial Group
93
Principal Financial Group
Iowa
$36.7K -$39K -540 -42%
Nisa Investment Advisors
94
Nisa Investment Advisors
Missouri
$35.8K +$217 +3 +0.4%
Prudential Financial
95
Prudential Financial
New Jersey
$34.8K
GC
96
Grimes & Company
Massachusetts
$30.1K -$1.01K -14 -2%
ProShare Advisors
97
ProShare Advisors
Maryland
$29.8K -$14.7K -203 -25%
Dimensional Fund Advisors
98
Dimensional Fund Advisors
Texas
$27.5K -$50.8K -702 -56%
HSBC Holdings
99
HSBC Holdings
United Kingdom
$24.9K -$217 -3 -0.6%
Victory Capital Management
100
Victory Capital Management
Texas
$23.9K -$578 -8 -2%