Security Snapshot

Ecovyst Inc. - COMMON STOCK (ECVT) Institutional Ownership

CUSIP: 27923Q109

13F Institutional Holders and Ownership History from Q2 2021 to Q3 2026

13F reference period

Q3 2026

Institutions Reporting

106

Shares (Excl. Options)

52.91MFull value: 52,909,293 · shares · 30 Sep 2026

Price

$9.83

The headline uses the Q3 2026 reference period after its reporting deadline. Available reports may still be incomplete or amended.

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Security type / class
Equity / COMMON STOCK
Symbol
ECVT on NYSE
All holders as of 30 Sep 2026
Q3 2026
Total 13F shares
52,909,293
Latest holder snapshot 5 signals
Total 13F value
$520,117,228
Portfolio coverage rank
0%
Share change
+1,987,664
Value change
+$16,318,441
Number of holders
106
Issuer context Names, identifiers, and filing context for this profile. 3 identity fields
Shares outstanding
110,071,922
SEC-reported price per share
$9.83
Insider filing price
$9.83
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Filing notes and source

Key facts

  • ECVT - Ecovyst Inc. - COMMON STOCK is tracked under CUSIP 27923Q109.
  • 106 institutions reported positions in Q3 2026.
  • 7 significant owners is listed from Schedule 13D/13G reporting.

Change

  • Holder count moved from 208 to 106 between Q2 2026 and Q3 2026.
  • SEC-reported value moved from
    $1.37BFull value: $1,366,397,884 · USD · 30 Jun 2026
    to
    $520.12MFull value: $520,117,228 · USD · 30 Sep 2026
    .

Research use

  • You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
  • 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.

Evidence

Source: SEC Form 13F

Latest holder context comes from 106 institutions filings for Q3 2026.

Open SEC evidence

Security key

27923Q109

13F reference period

Q3 2026

13F holders

106

13D/G owners

7

CIK / CUSIP context first

Open Q3 2026 holders ECVT full holder history Ecovyst Inc. SEC filings Ecovyst Inc. company facts Ecovyst Inc. insider transactions

Broader feeds

Latest 13F filings Latest 13D/G filings All securities

13D/G owners

Significant owners

Large-stake holder rows connected to Schedule 13D/G evidence.

Rows
7
Security
ECVT
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
BlackRock, Inc. 7.7% $109,646,328 8,526,153 BlackRock, Inc. 31 Mar 2026
FMR LLC 7.7% $83,314,539 8,475,538 FMR LLC 30 Sep 2026
DIMENSIONAL FUND ADVISORS LP 6% $81,983,177 6,585,047 Dimensional Fund Advisors LP 30 Jun 2026
VANGUARD PORTFOLIO MANAGEMENT LLC 5.6% $73,126,670 6,191,928 Vanguard Portfolio Management 30 Jun 2026
VANGUARD CAPITAL MANAGEMENT LLC 5.2% $74,768,542 5,814,039 Vanguard Capital Management 31 Mar 2026
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC 4.9% -36% $69,622,265 -$44,216,409 5,413,862 -39% Hotchkis and Wiley Capital Management, LLC 31 Mar 2026
As of 30 Sep 2026, 106 institutional investors reported holding
52.91MFull value: 52,909,293 · shares · 30 Sep 2026
shares of Ecovyst Inc. - COMMON STOCK (ECVT). This represents 48% of the company’s total
110.07MFull value: 110,071,922 · shares · Stored outstanding share count
outstanding shares.

13F concentration

Top 25 institutional shareholders

Largest 13F positions for this security by reported shares and value.

Top holder share
45%
Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
VANGUARD PORTFOLIO MANAGEMENT LLC 6.4% 7,067,522 +16% 0% $69,473,741
DIMENSIONAL FUND ADVISORS LP 6.1% 6,684,883 +1.5% 0.01% $65,712,077
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 4.4% 4,867,058 -5.2% 0.02% $47,843,180
VANGUARD CAPITAL MANAGEMENT LLC 4.4% 4,826,678 -0.35% 0% $47,446,245
GEODE CAPITAL MANAGEMENT, LLC 3% 3,326,984 +5.6% 0% $32,709,440
BRIGHTLINE CAPITAL MANAGEMENT, LLC 2.8% 3,033,000 +0.7% 12% $29,814,390
MORGAN STANLEY 2.7% 2,944,712 +161% 0% $28,946,527
STATE STREET CORP 2.4% 2,678,101 +0.11% 0% $26,325,733
AMERICAN CENTURY COMPANIES INC 2.4% 2,595,803 -25% 0.01% $25,516,743
AltraVue Capital, LLC 2.2% 2,457,400 +22% 2.1% $24,156,242
Qube Research & Technologies Ltd 1.9% 2,115,123 +27% 0.02% $20,791,659
NewEdge Advisors, LLC 0.81% 890,546 -0.55% 0.03% $8,754,067
VANGUARD FIDUCIARY TRUST CO 0.7% 768,613 -0.68% 0% $7,555,466
Connor, Clark & Lunn Investment Management Ltd. 0.67% 741,027 +30% 0.01% $7,284,295
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC 0.64% 701,521 -18% 0.02% $6,895,951
Legato Capital Management LLC 0.5% 545,710 +16% 0.48% $5,364,329
Ballast Asset Management, LP 0.48% 532,577 -3% 2.3% $5,235,232
Edgestream Partners, L.P. 0.4% 437,980 +87% 0.12% $4,305,343
UniSuper Management Pty Ltd 0.38% 419,639 -8.4% 0.02% $4,125,051
KESTREL INVESTMENT MANAGEMENT CORP 0.34% 377,500 -6.9% 2.1% $3,710,825
Simcoe Capital LLC 0.34% 374,675 +57% 2.5% $3,683,055
Invesco Ltd. 0.32% 348,787 -8.6% 0% $3,428,575
EASTERLY INVESTMENT PARTNERS LLC 0.31% 341,825 +152% 0.18% $3,360,140
Thrivent Financial for Lutherans 0.24% 269,214 -15% 0% $2,647,000
Empowered Funds, LLC 0.22% 243,872 -58% 0.01% $2,397,261

Quarter history

Institutional holders across reporting periods

Holder count, reported shares/value, and median price by quarter.

Periods
22
Headline period
Q3 2026
Rows shown
1-22 of 22
Period 13F Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2026 Q3 52,909,293 $520,117,228 +$16,318,441 $9.83 106
2026 Q2 109,817,279 $1,366,397,884 -$30,406,911 $12.45 208
2026 Q1 111,797,751 $1,438,361,434 -$29,863,270 $12.86 197
2025 Q4 116,631,050 $1,135,577,530 -$4,632,452 $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
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