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MRSN

Mersana Therapeutics

Delisted

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

77 hedge funds and large institutions have $162M invested in Mersana Therapeutics in 2019 Q2 according to their latest regulatory filings, with 20 funds opening new positions, 33 increasing their positions, 13 reducing their positions, and 6 closing their positions.

New
Increased
Maintained
Reduced
Closed

233% more first-time investments, than exits

New positions opened: 20 | Existing positions closed: 6

154% more repeat investments, than reductions

Existing positions increased: 33 | Existing positions reduced: 13

18% more funds holding

Funds holding: 6577 (+12)

0.25% more ownership

Funds ownership: 3.1%3.35% (+0.25%)

0% more funds holding in top 10

Funds holding in top 10: 22 (0)

17% less capital invested

Capital invested by funds: $194M → $162M (-$32.4M)

Holders
77
Holders Change
+12
Holders Change %
+18.46%
% of All Funds
1.67%
Holding in Top 10
2
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
0.04%
New
20
Increased
33
Reduced
13
Closed
6
Calls
Puts
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
NMC
1
NEA Management Company
Maryland
$48.2M
SCM
2
Sarissa Capital Management
Connecticut
$15.2M
BI
3
BVF Inc
California
$10.1M -$9.89K -84 -0.1%
ACH
4
ArrowMark Colorado Holdings
Colorado
$9.98M -$3.54M -30,063 -23%
BlackRock
5
BlackRock
New York
$9.68M +$7.03M +59,705 +166%
BC
6
Boxer Capital
California
$8.44M +$9.82M +83,360 New
Vanguard Group
7
Vanguard Group
Pennsylvania
$7.71M +$1.9M +16,120 +27%
O
8
OrbiMed
New York
$7.66M
RSCM
9
Rock Springs Capital Management
Maryland
$5.67M
EC
10
EcoR1 Capital
California
$5.64M -$4.28M -36,311 -39%
Wellington Management Group
11
Wellington Management Group
Massachusetts
$3.65M -$301K -2,551 -7%
JP Morgan Chase
12
JP Morgan Chase
New York
$3.32M -$44.6K -379 -1%
RCP
13
Rho Capital Partners
New York
$3.23M
Point72 Asset Management
14
Point72 Asset Management
Connecticut
$2.69M -$4.1M -34,775 -57%
State Street
15
State Street
Massachusetts
$2.18M +$1.63M +13,856 +181%
Geode Capital Management
16
Geode Capital Management
Massachusetts
$1.96M +$535K +4,543 +31%
DCM
17
DAFNA Capital Management
California
$1.11M -$603K -5,123 -32%
Renaissance Technologies
18
Renaissance Technologies
New York
$1.08M +$431K +3,660 +52%
Fidelity Investments
19
Fidelity Investments
Massachusetts
$1.04M +$2.12K +18 +0.2%
D.E. Shaw & Co
20
D.E. Shaw & Co
New York
$991K +$614K +5,209 +114%
Northern Trust
21
Northern Trust
Illinois
$827K +$114K +965 +13%
SFM
22
Sphera Funds Management
Israel
$810K
Marshall Wace
23
Marshall Wace
United Kingdom
$698K +$686K +5,825 +544%
Jacobs Levy Equity Management
24
Jacobs Levy Equity Management
New Jersey
$676K +$786K +6,675 New
Morgan Stanley
25
Morgan Stanley
New York
$639K +$712K +6,042 +2,213%