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
$11.02
All holders as of 31 Dec 2025
Q4 2025
Total 13F shares
116,632,092
Total reported value
$1,135,587,669
% of total 13F portfolios
0%
Share change
-886,399
Value change
-$3,582,011
Number of holders
161
Price from insider filings
$11.02
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 31 Dec 2025, 161 institutional investors reported holding 116,632,092 shares of Ecovyst Inc. - Common Stock, par value $0.01 per share (ECVT). This represents 102% 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 9.7% 11,112,611 +1.8% 0% $108,125,705
Rubric Capital Management LP 9.2% 10,500,000 +0.96% 1.2% $102,165,000
BlackRock, Inc. 9.1% 10,447,946 +1.7% 0% $101,658,514
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC 8.4% 9,568,392 +8.1% 0.28% $93,100,454
DIMENSIONAL FUND ADVISORS LP 5.6% 6,387,278 +2.1% 0.01% $62,149,494
MANGROVE PARTNERS IM, LLC 4.8% 5,447,873 -0.48% 4.3% $53,007,804
BROWN ADVISORY INC 4.4% 5,024,810 -8.2% 0.07% $48,891,400
OAKTREE CAPITAL MANAGEMENT LP 3.7% 4,254,503 +49% 0.67% $41,396,314
Allspring Global Investments Holdings, LLC 3.6% 4,127,390 -8.4% 0.07% $40,902,435
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC 2.4% 2,728,749 -9.5% 0.07% $26,550,728
GEODE CAPITAL MANAGEMENT, LLC 2.3% 2,677,764 -1.1% 0% $26,058,836
STATE STREET CORP 2.2% 2,543,242 +0.7% 0% $24,745,745
SHAPIRO CAPITAL MANAGEMENT LLC 2% 2,279,592 -42% 1.2% $22,180,430
CHARLES SCHWAB INVESTMENT MANAGEMENT INC 2% 2,271,907 +1.3% 0% $22,105,655
Medina Value Partners, LLC 1.9% 2,192,017 +1.5% 5% $21,328,325
FIRST WILSHIRE SECURITIES MANAGEMENT INC 1.9% 2,174,934 -0.36% 5.3% $21,162,108
AMERIPRISE FINANCIAL INC 1.9% 2,153,679 +0.18% 0% $20,955,296
BRIGHTLINE CAPITAL MANAGEMENT, LLC 1.8% 2,050,000 8.1% $19,946,500
Invenomic Capital Management LP 1.7% 1,906,840 -0.15% 0.9% $18,553,553
Owls Nest Partners IA, LLC 1.6% 1,826,120 +11% 4.9% $17,768,148
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 1.2% 1,393,092 +102% 0.01% $13,554,785
THOMPSON SIEGEL & WALMSLEY LLC 1.2% 1,366,711 -10% 0.22% $13,298,000
Point72 Asset Management, L.P. 1.1% 1,282,667 +4.8% 0.02% $12,480,350
LOOMIS SAYLES & CO L P 1.1% 1,268,450 +0.69% 0.01% $12,342,018
NEEDHAM INVESTMENT MANAGEMENT LLC 0.89% 1,020,000 +4.1% 0.63% $9,924,600

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 116,632,092 $1,135,587,669 -$3,582,011 $9.73 161
2025 Q3 117,875,962 $1,031,523,581 -$2,491,088 $8.76 167
2025 Q2 118,977,398 $975,976,264 +$101,467,001 $8.23 174
2025 Q1 106,907,265 $662,739,349 +$22,410,948 $6.20 160
2024 Q4 103,046,480 $787,752,848 -$27,161,680 $7.64 168
2024 Q3 106,704,069 $730,742,736 -$17,699,396 $6.85 157
2024 Q2 106,179,390 $952,614,776 +$18,773,621 $8.97 150
2024 Q1 103,850,140 $1,156,847,177 +$29,012,950 $11.15 147
2023 Q4 101,669,025 $992,774,376 -$17,730,573 $9.77 160
2023 Q3 102,934,766 $1,012,384,625 +$6,488,330 $9.84 149
2023 Q2 101,971,394 $1,167,824,191 +$172,239,800 $11.46 152
2023 Q1 87,074,604 $962,447,997 +$24,141,085 $11.05 164
2022 Q4 87,694,450 $777,768,179 -$77,259,878 $8.86 167
2022 Q3 96,536,202 $815,268,832 -$61,935,772 $8.44 133
2022 Q2 103,571,054 $1,020,314,664 -$3,832,650 $9.85 120
2022 Q1 103,926,077 $1,199,988,059 +$8,626,861 $11.56 107
2021 Q4 103,283,459 $1,057,565,404 +$523,604,303 $10.24 116
2021 Q3 46,725,980 $544,822,748 +$543,090,538 $11.66 99
2021 Q2 148,586 $2,282,000 +$2,282,000 $15.36 1