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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
BlackRock
1
BlackRock
New York
$129M +$277K +571 +0.2%
ACA
2
Avoro Capital Advisors
New York
$110M
Wellington Management Group
3
Wellington Management Group
Massachusetts
$100M +$29.6M +60,989 +33%
SCM
4
Sarissa Capital Management
Connecticut
$64.8M +$20.9M +43,144 +37%
State Street
5
State Street
Massachusetts
$60.6M +$11.5M +23,645 +19%
BCLSI
6
Bain Capital Life Sciences Investors
Massachusetts
$59.8M +$4.85M +10,000 +7%
Vanguard Group
7
Vanguard Group
Pennsylvania
$50.4M +$948K +1,954 +2%
T. Rowe Price Associates
8
T. Rowe Price Associates
Maryland
$48.1M -$6.41M -13,211 -10%
BG
9
Bellevue Group
Switzerland
$46.1M +$17.9M +36,960 +48%
RSCM
10
Rock Springs Capital Management
Maryland
$44.9M +$13.8M +28,458 +34%
Westfield Capital Management
11
Westfield Capital Management
Massachusetts
$32.3M +$29.8M +61,451 +332%
O
12
OrbiMed
New York
$30.6M +$21.7M +44,766 +145%
Alkeon Capital Management
13
Alkeon Capital Management
New York
$29.3M +$110K +227 +0.3%
CS
14
Candriam SCA
Luxembourg
$28.7M +$485 +1 +0%
PAMU
15
Pictet Asset Management (UK)
United Kingdom
$27.6M -$349K -720 -1%
AG
16
Artal Group
Luxembourg
$19.4M
Goldman Sachs
17
Goldman Sachs
New York
$18.7M +$2.29M +4,718 +11%
Point72 Asset Management
18
Point72 Asset Management
Connecticut
$16.9M +$2.35M +4,844 +13%
Geode Capital Management
19
Geode Capital Management
Massachusetts
$15.5M +$1.92M +3,950 +11%
RCP
20
Rho Capital Partners
New York
$12.9M
Fidelity Investments
21
Fidelity Investments
Massachusetts
$11.8M -$4.97M -10,253 -26%
PI
22
Putnam Investments
Massachusetts
$11.7M +$3.16M +6,516 +29%
Northern Trust
23
Northern Trust
Illinois
$9.6M -$744K -1,533 -6%
Two Sigma Advisers
24
Two Sigma Advisers
New York
$9.49M +$1.88M +3,872 +20%
Citadel Advisors
25
Citadel Advisors
Florida
$8.71M -$27.5M -56,665 -72%