ATRIUM THERAPEUTICS INC

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RNA·04965N104·US·Common Stock-13D/G

RNA (ATRIUM THERAPEUTICS INC) is held by 81 institutional investors as of Q2 2026. Largest holders: PRICE T ROWE ASSOCIATES INC /MD/ ($19.8M), BlackRock, Inc. ($19.5M), VANGUARD CAPITAL MANAGEMENT LLC ($9.8M). Net institutional sentiment: Mixed.

81

Holders

(5 Elite)

$113.5M

Total Value

46% (85)

Consensus

39 buying - 46 selling

13F: Jun 30, 2026Insider & Congress: Updated regularly

Smart Money Verdict

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Institutional (13F)25

Insider (Form 4)38

Activist (13D/13G)51

Congressional (STOCK Act)32

Holder Quality

52

★★★★★

Elite

42

★★★★

Strong

60

★★★

Solid

18

★★

Below

11

★

Weak

Held by 81 funds

5 elite

Who's Trading

Source dates: Price Oct 12, 2026 · Insiders Sep 22, 2026 · Activists Aug 14, 2026 · Congress none

InsiderKSKenney StephanieTax 2K shSep 18, 2026

InsiderHMHoyos Rocio MartinTax 8K shSep 18, 2026

InsiderYHYounis HusamTax 11K shSep 18, 2026

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Top Holders

Top Holders (81)History

AllNewIncreasedHeldDecreasedExitedFirst report

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Fund	Action	Shares	Value	Weight	Est. P&L	Conviction
PRICE T ROWE ASSOCIATES INC /MD/	Decreased	1.5M(-5.2%)	$19.8M	0.0%	-47.61%	0
BlackRock, Inc.	Increased	1.4M(+20.1%)	$19.5M	0.0%	-46.33%	34
VAVANGUARD CAPITAL MANAGEMENT LLC	Increased	730,831(+16.6%)	$9.8M	0.0%	-46.53%	32
GEODE CAPITAL MANAGEMENT, LLC	Increased	386,929(+21.0%)	$5.2M	0.0%	-46.29%	32
TWO SIGMA INVESTMENTS, LP	Increased	345,481(+93.5%)	$4.6M	0.0%	-43.76%	43
GOLDMAN SACHS GROUP INC	Decreased	310,341(-11.3%)	$4.2M	0.0%	-47.61%	0
STATE STREET CORP	Increased	271,762(+5.7%)	$3.7M	0.0%	-47.20%	28
CANTOR FITZGERALD, L. P.	Increased	256,917(+9.0%)	$3.5M	0.0%	-46.98%	29
MILLENNIUM MANAGEMENT LLC	Increased	200,559(+5.1%)	$2.7M	0.0%	-47.25%	28
Schonfeld Strategic Advisors LLC	Increased	199,158(+22.4%)	$2.7M	0.0%	-46.21%	32
AQR CAPITAL MANAGEMENT LLC	New	172,235	$2.3M	0.0%	-38.96%	36
SOSquarepoint Ops LLC	Decreased	146,743(-36.6%)	$2M	0.0%	-47.61%	0
NOMURA HOLDINGS INC	Increased	137,394(+0.0%)	$1.8M	0.0%	-47.61%	26
BANK OF AMERICA CORP /DE/	Decreased	132,833(-2.5%)	$1.8M	0.0%	-47.61%	0
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	Increased	130,217(+11.7%)	$1.8M	0.0%	-46.82%	29
TUDOR INVESTMENT CORP ET AL	Increased	129,591(+81.6%)	$1.7M	0.0%	-44.04%	40
NORTHERN TRUST CORP	Increased	119,781(+21.5%)	$1.6M	0.0%	-46.26%	31
ExodusPoint Capital Management, LP	Increased	117,275(+51.4%)	$1.6M	0.0%	-44.96%	36
TD ASSET MANAGEMENT INC	Unchanged	111,200	$1.5M	0.0%	-47.61%	0
VFVANGUARD FIDUCIARY TRUST CO	Increased	109,961(+15.6%)	$1.5M	0.0%	-46.59%	29

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