Mersana Therapeutics
MRSN
MRSN
109 hedge funds and large institutions have $30.3M invested in Mersana Therapeutics in 2025 Q1 according to their latest regulatory filings, with 30 funds opening new positions, 22 increasing their positions, 31 reducing their positions, and 48 closing their positions.
New
Increased
Maintained
Reduced
Closed
more call options, than puts
Call options by funds: $ | Put options by funds: $
less ownership
Funds ownership: →
less funds holding
Funds holding: →
less repeat investments, than reductions
Existing positions increased: | Existing positions reduced:
38% less first-time investments, than exits
New positions opened: 30 | Existing positions closed: 48
80% less capital invested
Capital invested by funds: $149M → $30.3M (-$119M)
100% less funds holding in top 10
Funds holding in top 10: 1 → 0 (-1)
Holders
109
Holding in Top 10
–
Calls
$12K
Puts
$5K
Top Buyers
| 1 | +$1.89M | |
| 2 | +$1.77M | |
| 3 | +$1.06M | |
| 4 |
Acadian Asset Management
Boston,
Massachusetts
|
+$1.03M |
| 5 |
Vanguard Group
Malvern,
Pennsylvania
|
+$454K |
Top Sellers
| 1 | -$16.2M | |
| 2 | -$6.08M | |
| 3 | -$3.77M | |
| 4 |
VA
VR Adviser
New York
|
-$2.3M |
| 5 |
ACP
Acuta Capital Partners
Redwood City,
California
|
-$1.6M |
