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MRSN

Mersana Therapeutics

Delisted

MRSN was delisted on the 5th of January, 2026.

Name Holding Trade Value Shares
Change
Change in
Stake
BCLSI
1
Bain Capital Life Sciences Investors
Massachusetts
$28.5M
BlackRock
2
BlackRock
New York
$26.2M +$2.87M +19,606 +7%
O
3
OrbiMed
New York
$23.7M -$10.5M -71,860 -20%
ACA
4
Avoro Capital Advisors
New York
$21M -$6.88M -47,000 -16%
Vanguard Group
5
Vanguard Group
Pennsylvania
$18.8M +$6.36M +43,445 +23%
BG
6
Bellevue Group
Switzerland
$17.2M +$5.38M +36,792 +21%
State Street
7
State Street
Massachusetts
$16.1M -$8.82M -60,283 -24%
Balyasny Asset Management
8
Balyasny Asset Management
Illinois
$15.9M +$28.3M +193,581 New
APM
9
Avidity Partners Management
Texas
$12.5M +$2.09M +14,271 +10%
RSCM
10
Rock Springs Capital Management
Maryland
$11.2M -$4.1M -28,027 -17%
AG
11
Artal Group
Luxembourg
$9.97M +$4.76M +32,550 +37%
DM
12
Deerfield Management
New York
$9.49M +$16.9M +115,416 New
LGM
13
Logos Global Management
California
$9.21M +$16.4M +112,000 New
Marshall Wace
14
Marshall Wace
United Kingdom
$8.92M +$1.26M +8,584 +9%
SCM
15
Sarissa Capital Management
Connecticut
$8.66M -$6.83M -46,684 -31%
CS
16
Candriam SCA
Luxembourg
$7.95M -$3.2M -21,895 -18%
Geode Capital Management
17
Geode Capital Management
Massachusetts
$6.6M +$1.21M +8,273 +11%
Millennium Management
18
Millennium Management
New York
$6.16M +$3.57M +24,435 +48%
RG
19
Redmile Group
California
$5.59M +$9.94M +67,945 New
Fidelity Investments
20
Fidelity Investments
Massachusetts
$4.87M +$7.93M +54,227 +1,095%
JP Morgan Chase
21
JP Morgan Chase
New York
$4.75M +$7.74M +52,889 +1,088%
Goldman Sachs
22
Goldman Sachs
New York
$4.59M -$9.03M -61,741 -53%
5VM
23
5AM Venture Management
California
$4.29M +$702K +4,800 +10%
Nuveen
24
Nuveen
North Carolina
$4.08M +$731 +5 +0%
Deutsche Bank
25
Deutsche Bank
Germany
$3.74M -$57.3K -392 -0.9%