We are live on
!
Find out more
MRSN
Mersana Therapeutics
MRSN
MRSN
Delisted
MRSN was delisted on the 5th of January, 2026.
69 hedge funds and large institutions have $203M invested in Mersana Therapeutics in 2019 Q4 according to their latest regulatory filings, with 13 funds opening new positions, 24 increasing their positions, 21 reducing their positions, and 20 closing their positions.
New
Increased
Maintained
Reduced
Closed
234% more capital invested
Capital invested by funds: $60.8M → $203M (+$142M)
50% more funds holding in top 10
Funds holding in top 10: 2 → 3 (+1)
14% more repeat investments, than reductions
Existing positions increased: 24 | Existing positions reduced: 21
0.26% less ownership
Funds ownership: 3.22% → 2.96% (-0.26%)
9% less funds holding
Funds holding: 76 → 69 (-7)
35% less first-time investments, than exits
New positions opened: 13 | Existing positions closed: 20
Holders
69
Holders Change
-7
Holders Change %
-9.21%
% of All Funds
1.36%
Holding in Top 10
3
Holding in Top 10 Change
+1
Holding in Top 10 Change %
+50%
% of All Funds
0.06%
New
13
Increased
24
Reduced
21
Closed
20
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–
Top Buyers
| 1 |
VMI
VHCP Management III
New York
|
+$4.57M |
| 2 |
VMI
VHCP Management II
New York
|
+$2.7M |
| 3 |
GTC
Ghost Tree Capital
New York
|
+$2.34M |
| 4 |
Millennium Management
New York
|
+$2.23M |
| 5 |
O
OrbiMed
New York
|
+$533K |
Top Sellers
| Name | Holding | Trade Value |
Shares Change |
Change in Stake |
|
|---|---|---|---|---|---|
|
HP
76
Hikari Power
Tokyo,
Japan
| – | -$143K | -3,610 | Closed |
|
|
ARTA
77
A.R.T. Advisors
New York
| – | -$76K | -1,932 | Closed |
|
|
JG
78
Jefferies Group
New York
| – | -$40K | -1,021 | Closed |
|
79
Ameriprise
Minneapolis,
Minnesota
| – | -$31K | -779 | Closed |
|
80
Russell Investments Group
London,
United Kingdom
| – | -$28K | -723 | Closed |
|
81
Ohio Public Employees Retirement System (OPERS)
Columbus,
Ohio
| – | -$26K | -660 | Closed |
|
82
Susquehanna International Group
Bala Cynwyd,
Pennsylvania
| – | -$26K | -655 | Closed |
|
83
Walleye Trading
New York
| – | -$24K | -609 | Closed |
|
84
Walleye Capital
New York
| – | -$23K | -570 | Closed |
|
|
DTL
85
Dynamic Technology Lab
Singapore
| – | -$19K | -471 | Closed |
|
|
CS
86
Credit Suisse
Zurich,
Switzerland
| – | -$17K | -435 | Closed |
|
|
CGA
87
Crescent Grove Advisors
Lake Forest,
Illinois
| – | -$16K | -400 | Closed |
|
88
Victory Capital Management
San Antonio,
Texas
| – | -$10K | -258 | Closed |
|
|
PHK
89
Point72 Hong Kong
Hong Kong
| – | -$2K | -41 | Closed |
|