Who owns ECVTWhat ECVT owns — n/a

Who owns Ecovyst Inc.?

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

Institutional ownership of ECVT from SEC Form 13F filings across 208 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.

As of the 2026-06-30 reporting period, 208 institutions disclosed 109.8M shares of Ecovyst Inc. worth $1.37B — about 100.3% of shares outstanding; the largest disclosed holder is BlackRock, Inc.. Source: SEC Form 13F filings, parsed by EvidInvest.

208

13F holders

$1.37B

value, 2026 filers

100.3%

of shares outstanding (109.8M sh)

new positions (2026 filers)

Top institutional holders

ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of ECVT's shares outstanding

#	Manager	Shares	Value	% of fund	% of co.	Δ shares QoQ
1	BlackRock, Inc.	10.7M	$132.8M	0.0%	9.7%	+22.1%
2	Rubric Capital Management LP	8.2M	$102.2M	0.9%	7.5%	-10.1%
3	DIMENSIONAL FUND ADVISORS LP	6.6M	$82.0M	0.0%	6%	+1.3%
4	VANGUARD PORTFOLIO MANAGEMENT LLC	6.1M	$75.8M	0.0%	5.6%	+16.1%
5	FMR LLC	5.3M	$66.4M	0.0%	4.9%	+19.4%
6	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	5.1M	$63.9M	0.0%	4.7%	+6.3%
7	VANGUARD CAPITAL MANAGEMENT LLC	4.8M	$60.3M	0.0%	4.4%	-2.7%
8	BROWN ADVISORY INC	4.5M	$56.4M	0.1%	4.1%	-6.4%
9	AMERICAN CENTURY COMPANIES INC	3.5M	$43.3M	0.0%	3.2%	+71.6%
10	GEODE CAPITAL MANAGEMENT, LLC	3.1M	$39.2M	0.0%	2.9%	+14.0%
11	BRIGHTLINE CAPITAL MANAGEMENT, LLC	3.0M	$37.5M	8.1%	2.8%	+7.6%
12	STATE STREET CORP	2.7M	$33.3M	0.0%	2.4%	+3.8%
13	GOLDMAN SACHS GROUP INC	2.6M	$32.6M	0.0%	2.4%	+86.3%
14	AMERIPRISE FINANCIAL INC	2.2M	$27.8M	0.0%	2%	+4.6%
15	FIRST WILSHIRE SECURITIES MANAGEMENT INC	2.2M	$27.0M	5.6%	2%	-1.2%
16	AltraVue Capital, LLCNEW	2.0M	$25.0M	1.8%	1.8%	new
17	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	1.9M	$23.6M	0.0%	1.7%	-10.7%
18	Qube Research & Technologies LtdNEW	1.7M	$20.7M	0.0%	1.5%	new
19	Allspring Global Investments Holdings, LLC	1.4M	$16.9M	0.0%	1.3%	-62.9%
20	HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC	1.4M	$17.5M	0.1%	1.3%	-74.1%
21	MORGAN STANLEY	1.1M	$14.1M	0.0%	1%	+56.4%
22	NEEDHAM INVESTMENT MANAGEMENT LLC	1.0M	$12.7M	0.4%	0.9%	0.0%
23	LOOMIS SAYLES & CO L P	1.0M	$12.6M	0.0%	0.9%	-17.3%
24	NORTHERN TRUST CORP	980,058	$12.2M	0.0%	0.9%	+2.2%
25	HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUNDNEW	942,306	$11.7M	0.0%	0.9%	new

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.