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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
OAM
26
Oxford Asset Management
United Kingdom
$571K +$665K +5,643 New
Assenagon Asset Management
27
Assenagon Asset Management
Luxembourg
$529K +$615K +5,224 New
PPA
28
Parametric Portfolio Associates
Washington
$498K +$25.2K +214 +5%
N
29
Nuveen
North Carolina
$437K +$508K +4,312 New
Bank of New York Mellon
30
Bank of New York Mellon
New York
$434K +$323K +2,738 +177%
SIM
31
Spark Investment Management
New York
$433K +$256K +2,171 +103%
PAM
32
Panagora Asset Management
Massachusetts
$397K +$462K +3,923 New
HP
33
Hikari Power
Japan
$365K
Charles Schwab
34
Charles Schwab
California
$345K +$237K +2,008 +144%
Citadel Advisors
35
Citadel Advisors
Florida
$326K +$161K +1,363 +73%
Deutsche Bank
36
Deutsche Bank
Germany
$285K -$509K -4,323 -61%
Millennium Management
37
Millennium Management
New York
$283K -$121K -1,030 -27%
Jane Street
38
Jane Street
New York
$249K +$236K +2,004 +441%
California State Teachers Retirement System (CalSTRS)
39
California State Teachers Retirement System (CalSTRS)
California
$224K +$171K +1,450 +190%
Allianz Asset Management
40
Allianz Asset Management
Germany
$212K +$5.07K +43 +2%
Acadian Asset Management
41
Acadian Asset Management
Massachusetts
$204K +$237K +2,013 New
BCM
42
Bridgeway Capital Management
Texas
$202K
Bank of America
43
Bank of America
North Carolina
$189K +$56.3K +478 +34%
Goldman Sachs
44
Goldman Sachs
New York
$164K +$76.8K +652 +67%
Ameriprise
45
Ameriprise
Minnesota
$161K +$188K +1,595 New
RhumbLine Advisers
46
RhumbLine Advisers
Massachusetts
$160K +$107K +909 +136%
AG
47
Algert Global
California
$157K +$83.9K +712 +85%
Susquehanna International Group
48
Susquehanna International Group
Pennsylvania
$154K +$179K +1,517 New
New York State Common Retirement Fund
49
New York State Common Retirement Fund
New York
$149K +$116K +984 +203%
Dimensional Fund Advisors
50
Dimensional Fund Advisors
Texas
$135K +$157K +1,337 New