Atrium Therapeutics Inc (RNA)

CUSIP: 04965N104 | NYSE | Healthcare · Biotechnology | Micro Cap | 205 institutional holders

Compare Detailed Historical Funds Options 13D/13G Peers Targeting Trading Summary Profile

Beneficial Ownership — 13D / 13G

5%+ stakes reported outside the quarterly cycle. A 13D is due within five business days of the event below, so these figures lead the holders table until the filer's next 13F catches up to them.

Holder	Shares	% of Class	Change	Event Date	vs 13F
13GSessa Capital IM, L.P.	1,500,000	8.8%	New 5%+ stake	Jun 30, 2026	No 13F filer matched
13G/ARA Capital Management, L.P.	0	0.0%	No shares held	Jun 30, 2026

Institutional Holders — Q3 2026

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Trium Capital LLP58,382

0.6% of portfolio$483.4K

Bank of New York Mellon Corp38,324

0.0% of portfolio$317.3K

AlphaCentric Advisors LLC22,301

0.2% of portfolio$184.7K

Kestra Private Wealth Services, LLC12,080

0.0% of portfolio$100.0K

Wealth Enhancement Advisory Services, LLC11,709

0.0% of portfolio$96.7K

Strs Ohio3,700

0.0% of portfolio$30.6K

Versant Capital Management, Inc931

0.0% of portfolio$7.7K

Citigroup Inc743

0.0% of portfolio$6.2K

Covestor Ltd468

0.0% of portfolio$4

Sterling Capital Management LLC415

0.0% of portfolio$3.4K

Gamma Investing LLC369

0.0% of portfolio$3.1K

FNY Investment Advisers, LLC330

0.0% of portfolio$2

Pinnacle Wealth Planning Services, Inc.115

0.0% of portfolio$952

Essential Partners LLC79

0.0% of portfolio$654

Nisa Investment Advisors, LLC77

0.0% of portfolio$636

SJS Investment Consulting Inc.73

0.0% of portfolio$605

EverSource Wealth Advisors, LLC72

0.0% of portfolio$596

Parkside Financial Bank & Trust60

0.0% of portfolio$497

True Wealth Design, LLC41

0.0% of portfolio$340

Fortitude Family Office, LLC22

0.0% of portfolio$182

Farther Finance Advisors, LLC18

0.0% of portfolio$149

US Bancorp \de\13

0.0% of portfolio$108

Centerpoint Advisors, LLC5

0.0% of portfolio$0

Root Financial Partners, LLC3

0.0% of portfolio$25

Parallel Advisors, LLC2

0.0% of portfolio$17

				Style	Turnover	Location	Filed
Trium Capital LLP	58,382	$483.4K	0.6%	Yield	Very High	London, United Kingdom	2026-10-16
Bank of New York Mellon Corp	38,324	$317.3K	0.0%	Core	Low	New York, NY	2026-11-05
AlphaCentric Advisors LLC	22,301	$184.7K	0.2%	Core	High	San Juan, PR	2026-11-03
Kestra Private Wealth Services, LLC	12,080	$100.0K	0.0%	Growth	Low	Austin, TX	2026-10-30
Wealth Enhancement Advisory Services, LLC	11,709	$96.7K	0.0%	Core	Low	Plymouth, MN	2026-10-13
Strs Ohio	3,700	$30.6K	0.0%	Core	Medium	Columbus, OH	2026-10-30
Versant Capital Management, Inc	931	$7.7K	0.0%	GARP	Low	Phoenix, AZ	2026-10-02
Citigroup Inc	743	$6.2K	0.0%	Core	Medium	New York, NY	2026-11-04
Covestor Ltd	468	$4	0.0%	Value	High	London, United Kingdom	2026-10-30
Sterling Capital Management LLC	415	$3.4K	0.0%	GARP	Medium	Charlotte, NC	2026-10-22
Gamma Investing LLC	369	$3.1K	0.0%	Index	Very Low	Foster City, CA	2026-10-08
FNY Investment Advisers, LLC	330	$2	0.0%	Growth	Very High	New York, NY	2026-10-16
Pinnacle Wealth Planning Services, Inc.	115	$952	0.0%	GARP	Low	Mansfield, OH	2026-10-27
Essential Partners LLC	79	$654	0.0%	Value	Medium	Rancho Santa Fe, CA	2026-10-14
Nisa Investment Advisors, LLC	77	$636	0.0%	Index	Very Low	St. Louis, MO	2026-10-20
SJS Investment Consulting Inc.	73	$605	0.0%	ETF	Very Low	Sylvania, OH	2026-10-26
EverSource Wealth Advisors, LLC	72	$596	0.0%	Core	Medium	Birmingham, AL	2026-11-04
Parkside Financial Bank & Trust	60	$497	0.0%	Core	Very Low	Saint Louis, MO	2026-10-27
True Wealth Design, LLC	41	$340	0.0%	ETF	Medium	Akron, OH	2026-10-13
Fortitude Family Office, LLC	22	$182	0.0%	ETF	Medium	Scottsdale, AZ	2026-10-14
Farther Finance Advisors, LLC	18	$149	0.0%	Index	Low	San Francisco, CA	2026-10-08
US Bancorp \de\	13	$108	0.0%	Index	Low	Minneapolis, MN	2026-11-05
Centerpoint Advisors, LLC	5	$0	0.0%	ETF	Very Low	Needham, MA	2026-11-05
Root Financial Partners, LLC	3	$25	0.0%	ETF	Medium	Encinitas, CA	2026-10-21
Parallel Advisors, LLC	2	$17	0.0%	Index	Low	San Francisco, CA	2026-11-03