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MRSN
Mersana Therapeutics
MRSN
MRSN
Delisted
MRSN was delisted on the 5th of January, 2026.
42 hedge funds and large institutions have $302M invested in Mersana Therapeutics in 2017 Q3 according to their latest regulatory filings, with 24 funds opening new positions, 5 increasing their positions, 7 reducing their positions, and 11 closing their positions.
New
Increased
Maintained
Reduced
Closed
118% more first-time investments, than exits
New positions opened: 24 | Existing positions closed: 11
45% more funds holding
Funds holding: 29 → 42 (+13)
28% more capital invested
Capital invested by funds: $236M → $302M (+$65.6M)
0.08% more ownership
Funds ownership: 3% → 3.08% (+0.08%)
0% more funds holding in top 10
Funds holding in top 10: 3 → 3 (0)
29% less repeat investments, than reductions
Existing positions increased: 5 | Existing positions reduced: 7
Holders
42
Holders Change
+13
Holders Change %
+44.83%
% of All Funds
1.05%
Holding in Top 10
3
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.07%
New
24
Increased
5
Reduced
7
Closed
11
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–
Top Buyers
| 1 |
Wellington Management Group
Boston,
Massachusetts
|
+$5.42M |
| 2 |
BlackRock
New York
|
+$4.16M |
| 3 |
CAM
Cormorant Asset Management
Boston,
Massachusetts
|
+$3.4M |
| 4 |
ACH
ArrowMark Colorado Holdings
Denver,
Colorado
|
+$2.01M |
| 5 |
Vanguard Group
Malvern,
Pennsylvania
|
+$1.32M |
Top Sellers
| Name | Holding | Trade Value |
Shares Change |
Change in Stake |
|
|---|---|---|---|---|---|
51
Credit Agricole
Montrouge Cedex,
France
| – | -$70K | -200 | Closed |
|
|
GGHC
52
Gilder Gagnon Howe & Co
New York
| – | -$70K | -200 | Closed |
|
|
WCMNY
53
Westchester Capital Management (New York)
Valhalla,
New York
| – | -$7K | -20 | Closed |
|