We are live on ! Find out more
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
$120M +$12.4M +32,825 +10%
Wellington Management Group
2
Wellington Management Group
Massachusetts
$93.4M +$10.6M +27,981 +11%
ACA
3
Avoro Capital Advisors
New York
$92.3M
SCM
4
Sarissa Capital Management
Connecticut
$54.4M
BCLSI
5
Bain Capital Life Sciences Investors
Massachusetts
$50.2M
State Street
6
State Street
Massachusetts
$44.1M -$7.56M -19,979 -13%
Vanguard Group
7
Vanguard Group
Pennsylvania
$43.2M +$972K +2,568 +2%
BG
8
Bellevue Group
Switzerland
$39.9M +$1.38M +3,640 +3%
RSCM
9
Rock Springs Capital Management
Maryland
$38.6M +$1.07M +2,820 +3%
O
10
OrbiMed
New York
$38M +$13.7M +36,310 +48%
T. Rowe Price Associates
11
T. Rowe Price Associates
Maryland
$31.5M -$9.94M -26,253 -22%
Westfield Capital Management
12
Westfield Capital Management
Massachusetts
$28.6M +$1.67M +4,406 +6%
CS
13
Candriam SCA
Luxembourg
$26.8M +$12.9M +34,029 +76%
Alkeon Capital Management
14
Alkeon Capital Management
New York
$24.5M -$64K -169 -0.2%
PAMU
15
Pictet Asset Management (UK)
United Kingdom
$23.3M +$125K +330 +0.5%
AG
16
Artal Group
Luxembourg
$16.3M
CIBC Asset Management
17
CIBC Asset Management
Ontario, Canada
$14.4M +$11.1M +29,235 +223%
Geode Capital Management
18
Geode Capital Management
Massachusetts
$14.3M +$1.42M +3,755 +10%
Assenagon Asset Management
19
Assenagon Asset Management
Luxembourg
$14.1M +$15.8M +41,638 New
RCP
20
Rho Capital Partners
New York
$10.8M
Northern Trust
21
Northern Trust
Illinois
$9.27M +$1.35M +3,578 +15%
Citadel Advisors
22
Citadel Advisors
Florida
$8M +$768K +2,029 +9%
Goldman Sachs
23
Goldman Sachs
New York
$7.83M -$8.79M -23,218 -50%
Two Sigma Advisers
24
Two Sigma Advisers
New York
$7.71M -$289K -764 -3%
Two Sigma Investments
25
Two Sigma Investments
New York
$7.66M +$2.7M +7,138 +46%