MERSANA THERAPEUTICS INC (MRSN) is held by institutional investors who disclose positions via SEC 13F filings. View the full list of institutional holders on HoldingsIntel.

Are institutions buying or selling MRSN?

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

What is the Smart Money Verdict on MRSN?

The Smart Money Verdict combines four independent signals (institutional 13F activity, insider trades, activist filings, and congressional trades) into a single assessment for MERSANA THERAPEUTICS INC.

Is institutional money flowing into MRSN?

27 institutional investors hold MERSANA THERAPEUTICS INC (MRSN). View detailed buyer/seller breakdown on HoldingsIntel.

What do hedge funds think about MRSN?

Track institutional sentiment and conviction scores for MERSANA THERAPEUTICS INC (MRSN) including Smart Money Verdict and position changes on HoldingsIntel.

MERSANA THERAPEUTICS INC

MRSN·59045L106·UQ·equity·Healthcare - Biotechnology-Activist

MRSN (MERSANA THERAPEUTICS INC) is held by 27 institutional investors as of Q4 2025. Largest holders: VANGUARD GROUP INC ($6.1M), BlackRock, Inc. ($2M), BANK OF AMERICA CORP /DE/ ($1.9M). Net institutional sentiment: Bearish.

Holders

Avg rating

$20.1M

Total Value

31% (34)

Fund Consensus

10 buying - 22 selling

Smart Money Verdict- Q4 2025View all

48Weak MomentumStrong Convergence

Held by 27 funds

Who's Trading

Activist683 Capital Management, LLC7.0%Feb 17, 2026

Activist

13F: Dec 31, 2025Insider & Congress: Updated regularly

Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
VANGUARD GROUP INC	Decreased	210,301(-30.5%)	$6.1M	0.0%	-28.12%	0
BlackRock, Inc.	Decreased	69,210(-28.1%)	$2M	0.0%	-18.08%	0
BANK OF AMERICA CORP /DE/	Decreased	65,749(-1.0%)	$1.9M	0.0%	+79.82%	0
MILLENNIUM MANAGEMENT LLC	Decreased	63,305(-18.8%)	$1.8M	0.0%	+299.45%	0
GABELLI FUNDS LLC	New	47,300	$1.4M	0.0%	+1.50%	35
GEODE CAPITAL MANAGEMENT, LLC	Increased	43,920(+5.5%)	$1.3M	0.0%	-82.91%	27
AQR CAPITAL MANAGEMENT LLC	Decreased	37,264(-20.2%)	$1.1M	0.0%	+206.43%	0
MACKENZIE FINANCIAL CORP	Decreased	33,834(-29.3%)	$967,437	0.0%	+273.30%	0
CITADEL ADVISORS LLC	New	22,493	$650,722	0.0%	+1.50%	34
STATE STREET CORP	Decreased	19,543(-34.5%)	$565,379	0.0%	-66.83%	0
MORGAN STANLEY	Decreased	18,496(-61.7%)	$535,089	0.0%	-34.19%	0
IEQ CAPITAL, LLC	Decreased	12,955(-15.0%)	$374,788	0.0%	+206.43%	0
XTX Topco Ltd	New	11,948	$345,656	0.0%	+1.50%	33
Point72 Asset Management, L.P.	New	10,364	$299,831	0.0%	+1.50%	32
GAMCO INVESTORS, INC. ET AL	New	10,000	$289,300	0.0%	+1.50%	32
NORTHERN TRUST CORP	New	8,586	$248,393	0.0%	+1.50%	35
OMERS ADMINISTRATION Corp	New	7,900	$228,547	0.0%	+1.50%	32
BNP PARIBAS FINANCIAL MARKETS	Increased	1,090(+105.3%)	$31,534	0.0%	-28.47%	22
GROUP ONE TRADING LLC	Increased	1,073(+11.7%)	$31,042	0.0%	+2.14%	22
UBS Group AG	Decreased	221(-97.4%)	$6,394	0.0%	+73.76%	0
ROYAL BANK OF CANADA	Decreased	168(-75.7%)	$5,000	0.0%	+110.78%	0
JPMORGAN CHASE & CO	Decreased	112(-98.2%)	$3,240	0.0%	+59.09%	0
OSAIC HOLDINGS, INC.	Decreased	103(-96.0%)	$2,980	0.0%	-79.14%	0
WELLS FARGO & COMPANY/MN	Decreased	40(-96.8%)	$1,157	0.0%	-30.00%	0
HUNTINGTON NATIONAL BANK	Unchanged	32	$926	0.0%	+206.43%	0
FMR LLC	Decreased	8(-99.8%)	$231	0.0%	-18.08%	0
DANSKE BANK A/S	Unchanged	1	$29	0.0%	+273.30%	0
TWO SIGMA ADVISERS, LP	Exited	0(-100.0%)	$315,366	0.0%	-13.28%	0
TWO SIGMA INVESTMENTS, LP	Exited	0(-100.0%)	$238,139	0.0%	+142.46%	0
Schonfeld Strategic Advisors LLC	Exited	0(-100.0%)	$2.1M	0.0%	+32.84%	0
CITIGROUP INC	Exited	0(-100.0%)	$823	0.0%	-19.30%	0
RENAISSANCE TECHNOLOGIES LLC	Exited	0(-100.0%)	$686,488	0.0%	+7.31%	0
Mirae Asset Global Investments Co., Ltd.	Exited	0(-100.0%)	$1,498	0.0%	-8.82%	0
BARCLAYS PLC	Exited	0(-100.0%)	$1,536	0.0%	-67.22%	0

MERSANA THERAPEUTICS INC

Continue exploring