Who owns ARXWhat ARX owns — n/a

Who owns Accelerant Holdings?

Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.

Institutional ownership of ARX from SEC Form 13F filings across 99 reporting managers. All positions are from one synchronized reporting period — 2026-03-31 books, filed up to 45 days after quarter end — so every row is comparable.

As of the 2026-03-31 reporting period, 99 institutions disclosed 52.8M shares of Accelerant Holdings worth $678.1M; the largest disclosed holder is Capital World Investors. Source: SEC Form 13F filings, parsed by EvidInvest.

13F holders

$678.1M

value, 2026 filers

52.8M

shares disclosed

new positions (2026 filers)

Top institutional holders

ordered by shares owned · positions as of 2026-03-31 · % of fund = share of the manager's own book · % of co. = share of ARX's shares outstanding

#	Manager	Shares	Value	% of fund	% of co.	Δ shares QoQ
1	Capital World Investors	5.2M	$68.8M	0.0%	—	—
2	Keenan Capital, LLC	4.0M	$53.3M	11.3%	—	—
3	GILDER GAGNON HOWE & CO LLC	3.7M	$50.0M	0.6%	—	—
4	BARINGS LLC	3.1M	$46.1M	0.7%	—	—
5	ALLIANCEBERNSTEIN L.P.	2.8M	$45.8M	0.0%	—	—
6	AMERICAN CENTURY COMPANIES INC	3.2M	$42.6M	0.0%	—	—
7	VANGUARD GROUP INC	2.2M	$36.5M	0.0%	—	—
8	MARSHALL WACE, LLP	2.3M	$30.4M	0.0%	—	—
9	JPMORGAN CHASE & CO	2.0M	$26.9M	0.0%	—	—
10	Azora Capital LP	2.0M	$26.5M	1.7%	—	—
11	VANGUARD CAPITAL MANAGEMENT LLC	1.9M	$25.9M	0.0%	—	—
12	Cresset Asset Management, LLC	1.8M	$24.6M	0.1%	—	—
13	FMR LLC	1.8M	$24.2M	0.0%	—	—
14	ArrowMark Colorado Holdings LLC	1.5M	$20.7M	0.5%	—	—
15	BAMCO INC /NY/	1.2M	$16.1M	0.0%	—	—
16	CITADEL ADVISORS LLC	1.1M	$15.3M	0.0%	—	—
17	T. Rowe Price Investment Management, Inc.	975,936	$13.0M	0.0%	—	—
18	Qube Research & Technologies Ltd	930,942	$12.4M	0.0%	—	—
19	JANE STREET GROUP, LLC	860,697	$11.5M	0.0%	—	—
20	NORGES BANK	665,076	$10.9M	0.0%	—	—
21	SUSQUEHANNA INTERNATIONAL GROUP, LLP	708,046	$9.5M	0.0%	—	—
22	UBS Group AG	685,647	$9.2M	0.0%	—	—
23	G2 Investment Partners Management LLC	372,811	$5.0M	1.2%	—	—
24	Woodline Partners LP	367,157	$4.9M	0.0%	—	—
25	BNP PARIBAS ARBITRAGE, SNC	305,244	$4.1M	0.0%	—	—

Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.