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MRSN
Mersana Therapeutics
MRSN
MRSN
Delisted
MRSN was delisted on the 5th of January, 2026.
76 hedge funds and large institutions have $60.8M invested in Mersana Therapeutics in 2019 Q3 according to their latest regulatory filings, with 6 funds opening new positions, 33 increasing their positions, 22 reducing their positions, and 7 closing their positions.
New
Increased
Maintained
Reduced
Closed
50% more repeat investments, than reductions
Existing positions increased: 33 | Existing positions reduced: 22
0% more funds holding in top 10
Funds holding in top 10: 2 → 2 (0)
0.13% less ownership
Funds ownership: 3.35% → 3.22% (-0.13%)
1% less funds holding
Funds holding: 77 → 76 (-1)
14% less first-time investments, than exits
New positions opened: 6 | Existing positions closed: 7
62% less capital invested
Capital invested by funds: $162M → $60.8M (-$101M)
Holders
76
Holders Change
-1
Holders Change %
-1.3%
% of All Funds
1.67%
Holding in Top 10
2
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
0.04%
New
6
Increased
33
Reduced
22
Closed
7
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–
Top Buyers
| 1 |
BI
BVF Inc
San Francisco,
California
|
+$4.49M |
| 2 |
Renaissance Technologies
New York
|
+$1.46M |
| 3 |
DCM
DAFNA Capital Management
Los Angeles,
California
|
+$659K |
| 4 |
PAM
Panagora Asset Management
Boston,
Massachusetts
|
+$553K |
| 5 |
Northern Trust
Chicago,
Illinois
|
+$536K |
Top Sellers
| Name | Holding | Trade Value |
Shares Change |
Change in Stake |
|
|---|---|---|---|---|---|
76
Federated Hermes
Pittsburgh,
Pennsylvania
| $1K | +$145 | +2 | New |
|
|
EC
77
EcoR1 Capital
San Francisco,
California
| – | -$5.64M | -55,689 | Closed |
|
78
Assenagon Asset Management
Senningerberg,
Luxembourg
| – | -$529K | -5,224 | Closed |
|
|
SIM
79
Spark Investment Management
New York
| – | -$433K | -4,283 | Closed |
|
80
Jane Street
New York
| – | -$249K | -2,458 | Closed |
|
81
Allianz Asset Management
Munich,
Germany
| – | -$212K | -2,090 | Closed |
|
82
M&T Bank
Buffalo,
New York
| – | -$115K | -1,137 | Closed |
|
83
Manulife (Manufacturers Life Insurance)
Canada,
Ontario, Canada
| – | -$113K | -1,112 | Closed |
|