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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
O
1
OrbiMed
New York
$37M
BCLSI
2
Bain Capital Life Sciences Investors
Massachusetts
$35.6M
ACA
3
Avoro Capital Advisors
New York
$31M
BlackRock
4
BlackRock
New York
$30.7M -$102K -724 -0.2%
State Street
5
State Street
Massachusetts
$26.4M +$3.12M +22,247 +9%
Vanguard Group
6
Vanguard Group
Pennsylvania
$19.1M +$1.06M +7,578 +4%
BG
7
Bellevue Group
Switzerland
$17.7M +$95.6K +681 +0.4%
RSCM
8
Rock Springs Capital Management
Maryland
$16.9M
SCM
9
Sarissa Capital Management
Connecticut
$15.6M -$1.11M -7,880 -5%
APM
10
Avidity Partners Management
Texas
$14.1M +$19.3M +137,329 New
B
11
Braidwell
Connecticut
$13.8M +$8.38M +59,724 +80%
Goldman Sachs
12
Goldman Sachs
New York
$12.1M +$5.19M +37,002 +46%
CS
13
Candriam SCA
Luxembourg
$11.2M +$1.52M +10,800 +10%
Marshall Wace
14
Marshall Wace
United Kingdom
$10.3M -$153K -1,091 -1%
AG
15
Artal Group
Luxembourg
$9.11M +$88.7K +632 +0.7%
Morgan Stanley
16
Morgan Stanley
New York
$7.8M +$790K +5,626 +8%
BBA
17
Baker Bros. Advisors
New York
$7.75M +$10.6M +75,445 New
D.E. Shaw & Co
18
D.E. Shaw & Co
New York
$7.42M -$2.97M -21,194 -23%
Geode Capital Management
19
Geode Capital Management
Massachusetts
$7.39M +$513K +3,655 +5%
Millennium Management
20
Millennium Management
New York
$5.18M -$13.5M -96,099 -66%
Renaissance Technologies
21
Renaissance Technologies
New York
$5.14M +$3.81M +27,152 +119%
Nuveen
22
Nuveen
North Carolina
$5.1M +$67.8K +483 +1%
ABG
23
Ally Bridge Group
New York
$4.9M
5VM
24
5AM Venture Management
California
$4.87M +$6.65M +47,400 New
Deutsche Bank
25
Deutsche Bank
Germany
$4.72M +$94.6K +674 +1%