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MRSN
Mersana Therapeutics
MRSN
MRSN
Delisted
MRSN was delisted on the 5th of January, 2026.
147 hedge funds and large institutions have $370M invested in Mersana Therapeutics in 2023 Q2 according to their latest regulatory filings, with 33 funds opening new positions, 56 increasing their positions, 41 reducing their positions, and 43 closing their positions.
New
Increased
Maintained
Reduced
Closed
706% more call options, than puts
Call options by funds: $18.1M | Put options by funds: $2.24M
37% more repeat investments, than reductions
Existing positions increased: 56 | Existing positions reduced: 41
0.01% less ownership
Funds ownership: 3.95% → 3.93% (-0.01%)
6% less funds holding
Funds holding: 157 → 147 (-10)
15% less capital invested
Capital invested by funds: $437M → $370M (-$67M)
23% less first-time investments, than exits
New positions opened: 33 | Existing positions closed: 43
67% less funds holding in top 10
Funds holding in top 10: 3 → 1 (-2)
Holders
147
Holders Change
-10
Holders Change %
-6.37%
% of All Funds
2.31%
Holding in Top 10
1
Holding in Top 10 Change
-2
Holding in Top 10 Change %
-66.67%
% of All Funds
0.02%
New
33
Increased
56
Reduced
41
Closed
43
Calls
$18.1M
Puts
$2.24M
Net Calls
+$15.8M
Net Calls Change
+$7.58M
Top Buyers
| 1 |
Balyasny Asset Management
Chicago,
Illinois
|
+$28.3M |
| 2 |
DM
Deerfield Management
New York
|
+$16.9M |
| 3 |
LGM
Logos Global Management
San Francisco,
California
|
+$16.4M |
| 4 |
RG
Redmile Group
San Francisco,
California
|
+$9.94M |
| 5 |
Fidelity Investments
Boston,
Massachusetts
|
+$7.93M |
Top Sellers
| 1 |
B
Braidwell
Stamford,
Connecticut
|
-$13.8M |
| 2 |
O
OrbiMed
New York
|
-$10.5M |
| 3 |
Goldman Sachs
New York
|
-$9.03M |
| 4 |
State Street
Boston,
Massachusetts
|
-$8.82M |
| 5 |
ACA
Avoro Capital Advisors
New York
|
-$6.88M |
