KALARIS THERAPEUTICS INC (KLRS) is held by 31 institutional investors that disclose positions via SEC 13F filings. The largest disclosed holder is RTW INVESTMENTS, LP as of Q1 2026.

Are institutions buying or selling KLRS?

In Q1 2026, 22 institutions opened or increased positions in KALARIS THERAPEUTICS INC while 10 reduced or exited — a net buying quarter.

What is the Smart Money Verdict on KLRS?

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

How many hedge funds hold KLRS?

31 institutional investors report holding KALARIS THERAPEUTICS INC (KLRS) as of Q1 2026, based on SEC 13F filings.

Is institutional money flowing into KLRS?

As of Q1 2026, tracked institutions in KALARIS THERAPEUTICS INC show 22 buyers versus 10 sellers — net inflows.

KALARIS THERAPEUTICS INC

KLRS·482929106·US·Common Stock·Healthcare - Biotechnology-Activist

Holders

Avg rating(5 Elite)

$17.7M

Total Value

69% (36)

Fund Consensus

22 buying - 10 selling

Smart Money Verdict

View all

Held by 31 funds

5 elite

Who's Trading

ActivistSBSamsara BioCapital, L.P.44.8%May 22, 2026

InsiderHRHagen Brett RSell $13KMar 20, 2026

Activist

RTW Investments, LP5.7%Feb 17, 2026

ActivistIPInvus Public Equities, L.P.1.5%Jul 29, 2025

ActivistECEcoR1 Capital, LLC1.1%May 15, 2025

InsiderHRHagen Brett RSell $8KMar 26, 2025

ActivistGSGILEAD SCIENCES, INC.3.9%Mar 20, 2025

View all insider trades View all activist filings

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

Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
RTW INVESTMENTS, LP	Unchanged	1.3M	$7.5M	0.1%	-47.02%	0
AIAlyeska Investment Group, L.P.	Increased	572,687(+41.9%)	$3.3M	0.0%	-48.89%	35
VAVANGUARD CAPITAL MANAGEMENT LLC	New	255,348	$1.5M	0.0%	-52.87%	39
RAYMOND JAMES FINANCIAL INC	Increased	118,887(+34.4%)	$685,978	0.0%	-48.65%	32
GOLDMAN SACHS GROUP INC	Increased	110,503(+222.1%)	$637,602	0.0%	-48.87%	39
Woodline Partners LP	Unchanged	100,000	$577,000	0.0%	-30.08%	0
GEODE CAPITAL MANAGEMENT, LLC	Increased	87,545(+5.9%)	$505,341	0.0%	-41.55%	17
MWMARSHALL WACE, LLP	Decreased	67,879(-6.9%)	$391,662	0.0%	-47.28%	0
RENAISSANCE TECHNOLOGIES LLC	Decreased	66,151(-24.6%)	$381,691	0.0%	+6.47%	0
MILLENNIUM MANAGEMENT LLC	New	59,534	$343,511	0.0%	-52.87%	33
SUSQUEHANNA INTERNATIONAL GROUP, LLP	Increased	52,684(+309.8%)	$303,987	0.0%	-51.56%	26
SOSquarepoint Ops LLC	Increased	39,773(+56.8%)	$229,490	0.0%	-26.30%	33
MORGAN STANLEY	Increased	38,344(+37.2%)	$221,245	0.0%	-39.62%	20
VFVANGUARD FIDUCIARY TRUST CO	New	36,717	$211,857	0.0%	-52.87%	32
BlackRock, Inc.	Decreased	36,043(-6.3%)	$207,968	0.0%	-35.65%	0
TWO SIGMA INVESTMENTS, LP	Increased	30,650(+10.4%)	$176,850	0.0%	-47.63%	25
STATE STREET CORP	Increased	26,510(+4.3%)	$152,963	0.0%	-41.59%	16
NORTHERN TRUST CORP	Increased	14,449(+5.8%)	$83,371	0.0%	-47.38%	15
Connor, Clark & Lunn Investment Management Ltd.	Increased	13,655(+34.4%)	$78,789	0.0%	-48.65%	28
Qube Research & Technologies Ltd	New	11,103	$64,064	0.0%	-52.87%	29