ATRIUM THERAPEUTICS INC

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RNA·04965N104·US·Common Stock-13D/G

RNA (ATRIUM THERAPEUTICS INC) is held by 91 institutional investors as of Q1 2026. Largest holders: PRICE T ROWE ASSOCIATES INC /MD/ ($20.8M), BlackRock, Inc. ($16.1M), RA CAPITAL MANAGEMENT, L.P. ($11.6M). Net institutional sentiment: Bullish. In Q1 2026, 1 member of Congress and 91 funds bought RNA.

91

Holders

(5 Elite)

$134.4M

Total Value

100% (91)

Consensus

91 buying - 0 selling

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

Smart Money Verdict

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Institutional (13F)

Insider (Form 4)

Activist (13D/13G)

Congressional (STOCK Act)

Holder Quality

★★★★★

Elite

★★★★

Strong

★★★

Solid

★★

Below

★

Weak

Held by 91 funds

5 elite

Who's Trading

ActivistRA Capital Management, L.P.0.0%May 15, 2026

ActivistRA Capital Management, L.P.5.6%May 15, 2026

ActivistBlackRock, Inc.5.2%Apr 27, 2026

ActivistT. Rowe Price Associates, Inc.10.0%Apr 8, 2026

ActivistJANUS HENDERSON GROUP PLC4.6%Feb 17, 2026

InsiderBSBoyce SarahSell $463KJan 21, 2026

InsiderBSBoyce SarahSell $579KJan 21, 2026

InsiderMTMcCarthy TeresaSell $107KJan 21, 2026

InsiderMTMcCarthy TeresaSell $105KJan 21, 2026

CongressDonald J. TrumpBuy $15,001 - $50,000Apr 4, 2025

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Top Holders

Top Holders (91)History

AllNewIncreasedHeldDecreasedExited

Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
PRICE T ROWE ASSOCIATES INC /MD/	New	1.6M	$20.8M	0.0%	-20.49%	39
BlackRock, Inc.	New	1.2M	$16.1M	0.0%	-20.49%	39
RA CAPITAL MANAGEMENT, L.P.	New	864,102	$11.6M	0.1%	-20.49%	46
VAVANGUARD CAPITAL MANAGEMENT LLC	New	626,869	$8.4M	0.0%	-20.49%	38
PEPentwater Capital Management LP	New	602,649	$8.1M	0.0%	-20.49%	38
GOLDMAN SACHS GROUP INC	New	349,950	$4.7M	0.0%	-20.49%	37
FARALLON CAPITAL MANAGEMENT, L.L.C.	New	349,360	$4.7M	0.0%	-20.49%	37
VPVANGUARD PORTFOLIO MANAGEMENT LLC	New	344,369	$4.6M	0.0%	-20.49%	37
GEODE CAPITAL MANAGEMENT, LLC	New	319,831	$4.3M	0.0%	-20.49%	37
STATE STREET CORP	New	257,086	$3.4M	0.0%	-20.49%	37
CANTOR FITZGERALD, L. P.	New	235,637	$3.2M	0.0%	-20.49%	37
BALYASNY ASSET MANAGEMENT L.P.	New	235,115	$3.1M	0.0%	-20.49%	37
SOSquarepoint Ops LLC	New	231,466	$3.1M	0.0%	-20.49%	37
MILLENNIUM MANAGEMENT LLC	New	190,859	$2.6M	0.0%	-20.49%	36
AGADAGE CAPITAL PARTNERS GP, L.L.C.	New	183,580	$2.5M	0.0%	-20.49%	36
TWO SIGMA INVESTMENTS, LP	New	178,560	$2.4M	0.0%	-20.49%	36
MORGAN STANLEY	New	165,036	$2.2M	0.0%	-20.49%	36
Schonfeld Strategic Advisors LLC	New	162,759	$2.2M	0.0%	-20.49%	36
Janus Henderson Group Ltd.	New	139,973	$1.9M	0.0%	-20.49%	36
NOMURA HOLDINGS INC	New	137,380	$1.8M	0.0%	-20.49%	36

Showing 1-20 of 91

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