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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
NMC
1
NEA Management Company
Maryland
$33.2M
ACH
2
ArrowMark Colorado Holdings
Colorado
$8.27M +$1.18M +7,487 +10%
RSCM
3
Rock Springs Capital Management
Maryland
$4.08M
Wellington Management Group
4
Wellington Management Group
Massachusetts
$3.94M -$11.2M -70,540 -65%
RCP
5
Rho Capital Partners
New York
$3.25M
BlackRock
6
BlackRock
New York
$3.19M -$1.54M -9,757 -24%
Point72 Asset Management
7
Point72 Asset Management
Connecticut
$2.24M +$3.48M +22,000 New
JP Morgan Chase
8
JP Morgan Chase
New York
$1.73M +$674K +4,257 +33%
Fidelity International
9
Fidelity International
Bermuda
$1.45M
JG
10
Jefferies Group
New York
$1.37M +$2.13M +13,450 New
Vanguard Group
11
Vanguard Group
Pennsylvania
$1.09M -$2.12M -13,377 -56%
Fidelity Investments
12
Fidelity Investments
Massachusetts
$1.04M
State Street
13
State Street
Massachusetts
$717K -$53.2K -336 -5%
Northern Trust
14
Northern Trust
Illinois
$567K -$43.7K -276 -5%
Geode Capital Management
15
Geode Capital Management
Massachusetts
$523K +$36.7K +232 +5%
PPA
16
Parametric Portfolio Associates
Washington
$472K +$322K +2,038 +79%
HP
17
Hikari Power
Japan
$348K +$540K +3,416 New
Two Sigma Investments
18
Two Sigma Investments
New York
$277K +$430K +2,717 New
Citadel Advisors
19
Citadel Advisors
Florida
$200K +$310K +1,962 New
SIM
20
Spark Investment Management
New York
$200K +$311K +1,968 New
Millennium Management
21
Millennium Management
New York
$181K -$2.06M -13,019 -88%
Bank of New York Mellon
22
Bank of New York Mellon
New York
$160K +$39.9K +252 +19%
Jacobs Levy Equity Management
23
Jacobs Levy Equity Management
New Jersey
$158K +$245K +1,547 New
Bank of America
24
Bank of America
North Carolina
$129K +$188K +1,188 +1,414%
Goldman Sachs
25
Goldman Sachs
New York
$121K -$25.6K -162 -12%