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MRSN
Mersana Therapeutics
MRSN
MRSN
Delisted
MRSN was delisted on the 5th of January, 2026.
157 hedge funds and large institutions have $437M invested in Mersana Therapeutics in 2023 Q1 according to their latest regulatory filings, with 26 funds opening new positions, 51 increasing their positions, 44 reducing their positions, and 20 closing their positions.
New
Increased
Maintained
Reduced
Closed
1,243% more call options, than puts
Call options by funds: $8.89M | Put options by funds: $662K
30% more first-time investments, than exits
New positions opened: 26 | Existing positions closed: 20
16% more repeat investments, than reductions
Existing positions increased: 51 | Existing positions reduced: 44
3% more funds holding
Funds holding: 152 → 157 (+5)
0% more funds holding in top 10
Funds holding in top 10: 3 → 3 (0)
0.11% less ownership
Funds ownership: 4.06% → 3.95% (-0.11%)
26% less capital invested
Capital invested by funds: $590M → $437M (-$153M)
Holders
157
Holders Change
+5
Holders Change %
+3.29%
% of All Funds
2.5%
Holding in Top 10
3
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.05%
New
26
Increased
51
Reduced
44
Closed
20
Calls
$8.89M
Puts
$662K
Net Calls
+$8.23M
Net Calls Change
+$8.18M
Top Buyers
| 1 |
APM
Avidity Partners Management
Dallas,
Texas
|
+$19.3M |
| 2 |
BBA
Baker Bros. Advisors
New York
|
+$10.6M |
| 3 |
B
Braidwell
Stamford,
Connecticut
|
+$8.38M |
| 4 |
5VM
5AM Venture Management
San Francisco,
California
|
+$6.65M |
| 5 |
Goldman Sachs
New York
|
+$5.19M |
Top Sellers
| 1 |
Millennium Management
New York
|
-$13.5M |
| 2 |
ACP
Acuta Capital Partners
Redwood City,
California
|
-$5M |
| 3 |
SCM
Silverarc Capital Management
Boston,
Massachusetts
|
-$3.37M |
| 4 |
WP
Woodline Partners
San Francisco,
California
|
-$3.07M |
| 5 |
D.E. Shaw & Co
New York
|
-$2.97M |