Atrium Therapeutics, Inc. (RNA) Ownership - Who Owns Atrium Therapeutics, Inc.?

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Atrium Therapeutics, Inc. (RNA) Ownership Overview

2.24% Insiders

42.62% Other Institutional Investors

9.59% ETFs

45.55% Public Companies and

Individual Investors

The ownership structure of Atrium Therapeutics, Inc. (RNA) stock is a mix of institutional, retail, and individual investors. , 2.24% is owned by Insiders, and 45.55% is owned by Public Companies and Individual Investors.

The ownership structure of Atrium Therapeutics, Inc. (RNA) stock is a mix of institutional, retail, and individual investors. Approximately 52.21% of the company’s stock is owned by Institutional Investors, 2.24% is owned by Insiders, and 45.55% is owned by Public Companies and Individual Investors.

Recent Insider Trading Activity

Date	Name	Activity	Value

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Recent Hedge Fund Trading Activity

Date	Firm	Activity	Value
Mar 31, 2026	Saba Capital Management	xxxxxxxxxxxxx	$529987
Mar 31, 2026	Fortress Investment Group Llc	xxxxxxxxxxxxx	$294581
Mar 31, 2026	Farallon Capital Management, L.l.c.	xxxxxxxxxxxxx	$4670943
Mar 31, 2026	Highbridge Capital Management Llc	xxxxxxxxxxxxx	$547983

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Top Shareholders

Holder	# of Shares	Type	% Holding	Value
	947,777	Institution	5.54%	12,359,012
Peter Kolchinsky	864,102	Institution	5.05%	11,267,890
	401,685	Institution	2.35%	5,237,972
Andrew J.M. Spokes	349,360	Institution	2.04%	4,555,654
	131,361	Insider	0.77%	1,712,947
	118,267	Institution	0.69%	1,542,202
	78,023	Institution	0.46%	1,017,420
	73,097	Insider	0.43%	953,185
	52,657	Insider	0.31%	686,647
	46,660	Insider	0.27%	608,446

Top Mutual Fund Holders

Holder	# of Shares	Type	% Holding	Value

Top ETF Holders

Holder	# of Shares	Type	% Holding	Value
Vanguard Total Stock Market ETF	443,916	Institution	2.60%	5,935,157
iShares Russell 2000 ETF	283,850	Institution	1.66%	3,729,789
Vanguard Small-Cap ETF	169,190	Institution	0.99%	2,262,070
Vanguard Extended Market ETF	159,352	Institution	0.93%	2,130,536
Janus Henderson Small Cap Growth Alpha ETF	118,267	Institution	0.69%	1,567,038
iShares Russell 2000 Growth ETF	88,223	Institution	0.52%	1,159,250
Schwab U.S. Small-Cap ETF	68,709	Institution	0.40%	910,394
Vanguard Russell 2000 ETF	60,216	Institution	0.35%	805,088
Vanguard Small Cap Value ETF	54,109	Institution	0.32%	723,437
Vanguard Small-Cap Growth ETF	46,944	Institution	0.27%	627,641

FAQ

Who Owns Atrium Therapeutics, Inc. (RNA)?

According to the latest TipRanks data, approximately 42.62% of the company's stock is held by institutional investors, 2.24% is held by insiders, and 45.55% is held by retail investors.

What percentage of Atrium Therapeutics, Inc. (RNA) stock is held by institutional investors?

According to the latest TipRanks data, approximately 42.62% of Atrium Therapeutics, Inc. (RNA) stock is held by institutional investors.

What percentage of Atrium Therapeutics, Inc. (RNA) stock is held by retail investors?

According to the latest TipRanks data, approximately 45.55% of Atrium Therapeutics, Inc. (RNA) stock is held by retail investors.

Who owns the most shares of Atrium Therapeutics, Inc. (RNA)?

Vanguard owns the most shares of Atrium Therapeutics, Inc. (RNA).

What is the significance of the ownership structure for a publicly traded company?

The ownership structure can impact the company's decision making, as large institutional investors may exert influence on the company's management and can also affect the company's stock price with their buying and selling patterns.