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MRSN

Mersana Therapeutics
MRSN

Delisted

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

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29 hedge funds and large institutions have $236M invested in Mersana Therapeutics in 2017 Q2 according to their latest regulatory filings, with 29 funds opening new positions, increasing their positions, reducing their positions, and closing their positions.

New
Increased
Maintained
Reduced
Closed

3% more ownership

Funds ownership: 0% → 3% (+3%)

Holders
29
Holders Change
+29
Holders Change %
–
% of All Funds
0.72%
Holding in Top 10
3
Holding in Top 10 Change
+3
Holding in Top 10 Change %
% of All Funds
0.07%
New
29
Increased
–
Reduced
–
Closed
–
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

1
NMC
NEA Management Company
Maryland
+$113M
2
Wellington Management Group
Wellington Management Group
Massachusetts
+$28.3M
3
Fidelity Investments
Fidelity Investments
Massachusetts
+$24M
4
RSCM
Rock Springs Capital Management
Maryland
+$21.1M
5
PAI
ProQuest Associates IV
Florida
+$13.2M

Top Sellers

No sellers this quarter
Name Holding Trade Value Shares
Change 		Change in
Stake
GGHC
26
Gilder Gagnon Howe & Co
New York
$70K +$69.2K +200 New
Deutsche Bank
27
Deutsche Bank
Germany
$53K +$52.6K +152 New
UBS Group
28
UBS Group
Switzerland
$24K +$23.2K +67 New
WCMNY
29
Westchester Capital Management (New York)
New York
$7K +$6.92K +20 New
1
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