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MRSN
Mersana Therapeutics
MRSN
MRSN
Delisted
MRSN was delisted on the 5th of January, 2026.
49 hedge funds and large institutions have $24.7M invested in Mersana Therapeutics in 2025 Q3 according to their latest regulatory filings, with 5 funds opening new positions, 17 increasing their positions, 22 reducing their positions, and 39 closing their positions.
New
Increased
Maintained
Reduced
Closed
61.32% more ownership
Funds ownership: 2.48% → 63.81% (+61%)
8% more capital invested
Capital invested by funds: $22.9M → $24.7M (+$1.77M)
23% less repeat investments, than reductions
Existing positions increased: 17 | Existing positions reduced: 22
41% less funds holding
Funds holding: 83 → 49 (-34)
87% less first-time investments, than exits
New positions opened: 5 | Existing positions closed: 39
Holders
49
Holders Change
-34
Holders Change %
-40.96%
% of All Funds
0.64%
Holding in Top 10
1
Holding in Top 10 Change
+1
Holding in Top 10 Change %
% of All Funds
0.01%
New
5
Increased
17
Reduced
22
Closed
39
Calls
$61K
Puts
–
Net Calls
+$61K
Net Calls Change
+$51K
Top Buyers
| 1 |
AV
Alamea Verwaltungs
Edison,
New Jersey
|
+$3.05M |
| 2 |
Bank of America
Charlotte,
North Carolina
|
+$492K |
| 3 |
Mackenzie Financial
Toronto Ontario,
Ontario, Canada
|
+$359K |
| 4 |
SSA
Schonfeld Strategic Advisors
New York
|
+$350K |
| 5 |
Morgan Stanley
New York
|
+$255K |
Top Sellers
| 1 |
AQR Capital Management
Greenwich,
Connecticut
|
-$1.19M |
| 2 |
CCM
Catalio Capital Management
New York
|
-$464K |
| 3 |
Goldman Sachs
New York
|
-$424K |
| 4 |
BlackRock
New York
|
-$408K |
| 5 |
Jacobs Levy Equity Management
Florham Park,
New Jersey
|
-$395K |
