Ecovyst Inc. - Common Stock, par value $0.01 per share (ECVT) Institutional Ownership

13F Institutional Holders and Ownership History from Q2 2021 to Q4 2025

Type / Class
Equity / Common Stock, par value $0.01 per share
Symbol
ECVT on NYSE
Shares outstanding
114,411,441
Price per share
$9.73
All holders as of 30 Sep 2025
Q3 2025
Total 13F shares
117,875,918
Total reported value
$1,031,523,196
% of total 13F portfolios
0%
Share change
-1,073,149
Value change
-$2,491,454
Number of holders
166
Price from insider filings
$9.73
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of Ecovyst Inc. - Common Stock, par value $0.01 per share (ECVT) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
Rubric Capital Management LP 9.1% $91,104,000 10,400,000 Rubric Capital Management LP 30 Sep 2025
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC 7.7% -18% $77,544,852 -$20,731,793 8,852,152 -21% Hotchkis and Wiley Capital Management, LLC 30 Sep 2025

As of 30 Sep 2025, 166 institutional investors reported holding 117,875,918 shares of Ecovyst Inc. - Common Stock, par value $0.01 per share (ECVT). This represents 103% of the company’s total 114,411,441 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of Ecovyst Inc. - Common Stock, par value $0.01 per share (ECVT) together control 86% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
VANGUARD GROUP INC 9.5% 10,921,217 +2.5% 0% $95,669,861
Rubric Capital Management LP 9.1% 10,400,000 +121% 1.2% $91,104,000
BlackRock, Inc. 9% 10,268,736 +1% 0% $89,954,124
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC 7.7% 8,852,152 -21% 0.24% $77,544,852
DIMENSIONAL FUND ADVISORS LP 5.5% 6,257,072 +1.3% 0.01% $54,811,860
BROWN ADVISORY INC 4.8% 5,474,867 0.06% $47,959,836
MANGROVE PARTNERS IM, LLC 4.8% 5,474,057 +21% 3.5% $47,952,739
Allspring Global Investments Holdings, LLC 3.9% 4,506,862 -7.4% 0.06% $38,623,807
SHAPIRO CAPITAL MANAGEMENT LLC 3.4% 3,910,397 -30% 1.5% $34,255,078
Boston Partners 2.8% 3,225,459 -0.52% 0.03% $28,099,111
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC 2.6% 3,014,160 -5.7% 0.07% $26,404,042
OAKTREE CAPITAL MANAGEMENT LP 2.5% 2,859,022 0.42% $25,045,032
GEODE CAPITAL MANAGEMENT, LLC 2.4% 2,707,720 +7.2% 0% $23,722,230
STATE STREET CORP 2.2% 2,525,540 -1.3% 0% $22,123,730
CHARLES SCHWAB INVESTMENT MANAGEMENT INC 2% 2,243,379 +3.6% 0% $19,652,000
FIRST WILSHIRE SECURITIES MANAGEMENT INC 1.9% 2,182,895 -0.8% 5.1% $19,122,160
Medina Value Partners, LLC 1.9% 2,160,140 -32% 4.4% $18,922,826
AMERIPRISE FINANCIAL INC 1.9% 2,149,744 +35% 0% $18,831,757
Invenomic Capital Management LP 1.7% 1,909,686 0.87% $16,728,849
Owls Nest Partners IA, LLC 1.4% 1,651,060 +217% 4% $14,463,286
THOMPSON SIEGEL & WALMSLEY LLC 1.3% 1,522,555 +0.44% 0.22% $13,338,000
LOOMIS SAYLES & CO L P 1.1% 1,259,769 +20% 0.01% $11,035,577
Point72 Asset Management, L.P. 1.1% 1,224,171 -1.6% 0.02% $10,723,741
MORGAN STANLEY 0.96% 1,100,468 +162% 0% $9,640,106
NORTHERN TRUST CORP 0.89% 1,016,816 +7.9% 0% $8,907,308

Institutional Holders of Ecovyst Inc. - Common Stock, par value $0.01 per share (ECVT) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q4 4,840,145 $47,837,117 -$909,556 $9.73 10
2025 Q3 117,875,918 $1,031,523,196 -$2,491,454 $8.76 166
2025 Q2 118,977,398 $975,976,264 +$101,467,039 $8.23 174
2025 Q1 106,907,265 $662,739,047 +$22,410,978 $6.20 160
2024 Q4 103,046,480 $787,752,669 -$27,161,704 $7.64 168
2024 Q3 106,704,069 $730,742,481 -$17,763,253 $6.85 157
2024 Q2 106,188,766 $952,698,386 +$18,821,030 $8.97 150
2024 Q1 103,850,082 $1,156,846,051 +$32,719,698 $11.15 146
2023 Q4 420,250 $4,105,842 -$642,137 $9.77 3
2023 Q3 102,934,627 $1,012,383,369 +$5,295,707 $9.84 148
2023 Q2 101,971,394 $1,167,824,317 +$172,239,347 $11.46 152
2023 Q1 86,832,095 $959,768,754 +$24,881,857 $11.05 163
2022 Q4 87,666,887 $777,523,529 -$77,261,762 $8.86 166
2022 Q3 96,506,789 $815,020,200 -$61,007,262 $8.44 130
2022 Q2 103,440,940 $1,018,050,647 -$3,177,994 $9.85 117
2022 Q1 103,893,492 $1,199,612,059 +$5,837,522 $11.56 105
2021 Q4 102,896,899 $1,053,609,404 +$556,954,265 $10.24 112
2021 Q3 46,696,946 $544,482,748 +$542,749,826 $11.66 100
2021 Q2 148,586 $2,282,000 +$2,281,999 $15.36 1