Ecovyst Inc. (ECVT) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

114,862,319Shares Outstanding

2,793,017Shares held by institutions

$32,510,718Value of institutional holdings

100.46%Institutional ownership %

3.11%Shares Changed QoQ

155No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

Recent 13F filings as of December 2025 show that 155 institutional investors hold a position in Ecovyst Inc. (NYSE:ECVT).

These investors collectively held 100.5% of the company's total shares outstanding in December 2025, down from 103.2% in September 2025.
On a quarter-over-quarter basis, institutional holdings shifted by 3.11%, with a year-over-year a decrease of 8.82% in the count of filers.
Of these 155 institutional investors, 65 increased their holdings in Ecovyst, while 58 of them reduced positions, and 32 investors maintained their exposure.
Collectively, institutional investors increased their stake in Ecovyst to 115.39Mn shares as of December 2025, a change that is up by 3.48Mn shares quarter on quarter and up 12.12Mn shares year over year.
As of December 31, 2025, VANGUARD GROUP INC held Ecovyst's largest shareholding position with over 11.11Mn shares, representing 9.67% of total outstanding shares.
Among the most significant buyers of Ecovyst during December 2025 were BRIGHTLINE CAPITAL MANAGEMENT, LLC (2.05Mn), OAKTREE CAPITAL MANAGEMENT LP (1.40Mn), HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC (716.24K), ARROWSTREET CAPITAL, LIMITED PARTNERSHIP (704.58K), KESTREL INVESTMENT MANAGEMENT CORP (407.60K).
Leading sellers of Ecovyst stock in December 2025 included SHAPIRO CAPITAL MANAGEMENT LLC (1.63Mn), D. E. Shaw & Co., Inc. (533.30K), BROWN ADVISORY INC (450.06K), Allspring Global Investments Holdings, LLC (379.47K), MORGAN STANLEY (344.26K).
The top 10 institutional holders of Ecovyst for the quarter ending December 2025 included VANGUARD GROUP INC (11.11Mn), Rubric Capital Management LP (10.50Mn), BlackRock, Inc. (10.45Mn), HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC (9.57Mn), DIMENSIONAL FUND ADVISORS LP (6.39Mn), MANGROVE PARTNERS IM, LLC (5.45Mn), BROWN ADVISORY INC (5.02Mn), OAKTREE CAPITAL MANAGEMENT LP (4.25Mn), Allspring Global Investments Holdings, LLC (4.13Mn), WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC (2.73Mn).

155 Institutional Holders

2,793,017 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
VANGUARD GROUP INC	31 Dec, 2025	11,112,611	191,394	1.75%	$108,125,705.00
Rubric Capital Management LP	31 Dec, 2025	10,500,000	100,000	0.96%	$102,165,000.00
BlackRock, Inc.	31 Dec, 2025	10,447,946	179,210	1.75%	$101,658,514.00
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC	31 Dec, 2025	9,568,392	716,240	8.09%	$93,100,454.00
DIMENSIONAL FUND ADVISORS LP	31 Dec, 2025	6,387,278	130,206	2.08%	$62,149,494.00
MANGROVE PARTNERS IM, LLC	31 Dec, 2025	5,447,873	-26,184	-0.48%	$53,007,804.00
BROWN ADVISORY INC	31 Dec, 2025	5,024,810	-450,057	-8.22%	$48,891,400.00
OAKTREE CAPITAL MANAGEMENT LP	31 Dec, 2025	4,254,503	1,395,481	48.81%	$41,396,314.00
Allspring Global Investments Holdings, LLC	31 Dec, 2025	4,127,390	-379,472	-8.42%	$40,902,435.00
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC	31 Dec, 2025	2,728,749	-285,411	-9.47%	$26,550,728.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	2,677,764	-29,956	-1.11%	$26,058,836.00
STATE STREET CORP	31 Dec, 2025	2,543,242	17,702	0.70%	$24,745,745.00
SHAPIRO CAPITAL MANAGEMENT LLC	31 Dec, 2025	2,279,592	-1,630,805	-41.70%	$22,180,430.00
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	31 Dec, 2025	2,271,907	28,528	1.27%	$22,105,655.00
Medina Value Partners, LLC	31 Dec, 2025	2,192,017	31,877	1.48%	$21,328,325.00
FIRST WILSHIRE SECURITIES MANAGEMENT INC	31 Dec, 2025	2,174,934	-7,961	-0.36%	$21,162,108.00
AMERIPRISE FINANCIAL INC	31 Dec, 2025	2,153,679	3,935	0.18%	$20,955,296.00
BRIGHTLINE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	2,050,000	2,050,000	0.00%	$19,946,500.00
Invenomic Capital Management LP	31 Dec, 2025	1,906,840	-2,846	-0.15%	$18,553,553.00
Owls Nest Partners IA, LLC	31 Dec, 2025	1,826,120	175,060	10.60%	$17,768,148.00

1 - 20 of 155

Research Tools