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MRSN
Mersana Therapeutics
MRSN
MRSN
Delisted
MRSN was delisted on the 5th of January, 2026.
126 hedge funds and large institutions have $366M invested in Mersana Therapeutics in 2022 Q2 according to their latest regulatory filings, with 19 funds opening new positions, 50 increasing their positions, 36 reducing their positions, and 19 closing their positions.
New
Increased
Maintained
Reduced
Closed
39% more repeat investments, than reductions
Existing positions increased: 50 | Existing positions reduced: 36
14% more capital invested
Capital invested by funds: $322M → $366M (+$44.2M)
0% more funds holding in top 10
Funds holding in top 10: 2 → 2 (0)
0% more first-time investments, than exits
New positions opened: 19 | Existing positions closed: 19
0.24% less ownership
Funds ownership: 3.88% → 3.64% (-0.24%)
2% less funds holding
Funds holding: 128 → 126 (-2)
93% less call options, than puts
Call options by funds: $19K | Put options by funds: $257K
Holders
126
Holders Change
-2
Holders Change %
-1.56%
% of All Funds
2.12%
Holding in Top 10
2
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.03%
New
19
Increased
50
Reduced
36
Closed
19
Calls
$19K
Puts
$257K
Net Calls
-$238K
Net Calls Change
+$92K
Top Buyers
| 1 |
O
OrbiMed
New York
|
+$15.9M |
| 2 |
WP
Woodline Partners
San Francisco,
California
|
+$11.9M |
| 3 |
BCLSI
Bain Capital Life Sciences Investors
Boston,
Massachusetts
|
+$8.06M |
| 4 |
Vanguard Group
Malvern,
Pennsylvania
|
+$4.88M |
| 5 |
BlackRock
New York
|
+$4.72M |
Top Sellers
| 1 |
Bank of Montreal
Toronto,
Ontario, Canada
|
-$4.29M |
| 2 |
CIBC Asset Management
Toronto,
Ontario, Canada
|
-$4.21M |
| 3 |
Two Sigma Investments
New York
|
-$3.1M |
| 4 |
RCP
Rho Capital Partners
New York
|
-$3M |
| 5 |
Federated Hermes
Pittsburgh,
Pennsylvania
|
-$2.89M |
