MERSANA THERAPEUTICS INC (MRSN) is held by 0 institutional investors that disclose positions via SEC 13F filings.

Are institutions buying or selling MRSN?

HoldingsIntel tracks quarter-over-quarter changes in institutional positions for MERSANA THERAPEUTICS INC: new buyers, position increases, decreases, and exits with conviction-weighted sentiment.

How many hedge funds hold MRSN?

0 institutional investors report holding MERSANA THERAPEUTICS INC (MRSN) as of Q1 2026, based on SEC 13F filings.

Is institutional money flowing into MRSN?

0 institutional investors hold MERSANA THERAPEUTICS INC (MRSN). View the detailed buyer and seller breakdown on HoldingsIntel.

Delisted

This security is no longer actively traded. Historical data is preserved for reference.No longer actively traded (Yahoo Finance confirms no newer data)

MERSANA THERAPEUTICS INC

MRSN·59045L205·US·Common Stock·Healthcare - Biotechnology-Activist

Holders

Total Value

Consensus

13F: Mar 31, 2026Insider & Congress: Updated regularly

No verdict yet — fewer than 2 funds hold MRSN.

Checking access…

Fund	Action	Shares	Value	Weight	Est. P&L
WELLS FARGO & COMPANY/MN	Exited	0(-100.0%)	$1,157	0.0%	-30.00%
STATE STREET CORP	Exited	0(-100.0%)	$565,379	0.0%	-66.83%
BANK OF AMERICA CORP /DE/	Exited	0(-100.0%)	$1.9M	0.0%	+79.82%
OSAIC HOLDINGS, INC.	Exited	0(-100.0%)	$2,980	0.0%	-79.14%
GEODE CAPITAL MANAGEMENT, LLC	Exited	0(-100.0%)	$1.3M	0.0%	-82.97%
XTX Topco Ltd	Exited	0(-100.0%)	$345,656	0.0%	+1.50%
UBS Group AG	Exited	0(-100.0%)	$6,394	0.0%	+73.76%
ROYAL BANK OF CANADA	Exited	0(-100.0%)	$5,000	0.0%	+46.85%
HUNTINGTON NATIONAL BANK	Exited	0(-100.0%)	$926	0.0%	+206.43%
BlackRock, Inc.	Exited	0(-100.0%)	$2M	0.0%	-18.08%
OMERS ADMINISTRATION Corp	Exited	0(-100.0%)	$228,547	0.0%	+1.50%
BNP PARIBAS FINANCIAL MARKETS	Exited	0(-100.0%)	$31,534	0.0%	-28.62%
FMR LLC	Exited	0(-100.0%)	$231	0.0%	-18.08%
NORTHERN TRUST CORP	Exited	0(-100.0%)	$248,393	0.0%	+1.50%
MORGAN STANLEY	Exited	0(-100.0%)	$535,089	0.0%	-34.19%
JPMORGAN CHASE & CO	Exited	0(-100.0%)	$3,240	0.0%	+59.09%
MILLENNIUM MANAGEMENT LLC	Exited	0(-100.0%)	$1.8M	0.0%	+299.45%
GAMCO INVESTORS, INC. ET AL	Exited	0(-100.0%)	$289,300	0.0%	+1.50%
CITADEL ADVISORS LLC	Exited	0(-100.0%)	$650,722	0.0%	+1.50%
AQR CAPITAL MANAGEMENT LLC	Exited	0(-100.0%)	$1.1M	0.0%	+206.43%

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High Conviction Moves-Smart Money Convergence-Fund Consensus-Double-Down Detection

Data sourced from four public-disclosure sources: SEC 13F, Form 4, 13D/13G, and House/Senate STOCK Act disclosures. Not financial advice. Full disclaimer

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