Save your place

Sign in to WhoBought

Please try again later.

Ecovyst Inc. (ECVT) institutional ownership

Latest close $12.40 Jul 20, 2026
Market cap$1.3B 52-week range SectorBasic Materials
Funds holding · Q1 2026
171
reported ECVT position changes
Top owners · Q1 2026
No disclosed owners are available.
Institutional activity · Q1 2026
Activity unavailable N/A
99 buyers · 72 sellers

Ecovyst Inc. (ECVT) price and institutional activity

Dates

Q1 2026

$0 bought by 99 investors
FMR LLCArrowstreet Capital, Limited Partnership +97 more
$0 sold by 72 investors
Mangrove Partners Im, LLCHotchkis & Wiley Capital Management LLC +70 more
Sign in to see who bought
Bought Sold Totals per quarter; hover a bar for the names.

Ecovyst Inc. (ECVT) institutional activity · 99

Investor Type Est. change Change Δ Own Date
FMR LLC · Added
Change +4.0M Δ Own +924.5% Date Q1 2026
FMR LLC Added· Q1 2026 +4.0M +924.5% Q1 2026
Arrowstreet Capital, Limited Partnership · Added
Change +3.4M Date Q1 2026
Arrowstreet Capital, Limited Partnership Added· Q1 2026 +3.4M Q1 2026
American Century Companies Inc · Added
Change +1.4M Date Q1 2026
American Century Companies Inc Added· Q1 2026 +1.4M Q1 2026
Driehaus Capital Management LLC · New
Change +1.4M Date Q1 2026
Driehaus Capital Management LLC New· Q1 2026 +1.4M Q1 2026
Congruence Capital, LLC · New
Change +815K Date Q1 2026
Congruence Capital, LLC New· Q1 2026 +815K Q1 2026
Brightline Capital Management, LLC · Added
Change +750K Date Q1 2026
Brightline Capital Management, LLC Added· Q1 2026 +750K Q1 2026
Citadel Advisors LLC Added· Q1 2026 +621K +2157.2% Q1 2026
Goldman Sachs Group Inc · Added
Change +579K Date Q1 2026
Goldman Sachs Group Inc Added· Q1 2026 +579K Q1 2026
Dayah Capital LLC · New
Change +470K Date Q1 2026
Dayah Capital LLC New· Q1 2026 +470K Q1 2026
Bank of America Corp · Added
Change +424K Date Q1 2026
Bank of America Corp Added· Q1 2026 +424K Q1 2026
D. E. Shaw & Co., Inc. · Added
Change +394K Δ Own +1365.6% Date Q1 2026
D. E. Shaw & Co., Inc. Added· Q1 2026 +394K +1365.6% Q1 2026
Summittx Capital, L.P. · New
Change +390K Date Q1 2026
Summittx Capital, L.P. New· Q1 2026 +390K Q1 2026
Jane Street Group, LLC · Added
Change +371K Date Q1 2026
Jane Street Group, LLC Added· Q1 2026 +371K Q1 2026
JPMorgan Chase & Co · Added
Change +364K Date Q1 2026
JPMorgan Chase & Co Added· Q1 2026 +364K Q1 2026
Tiptree Advisors, LLC · New
Change +325K Date Q1 2026
Tiptree Advisors, LLC New· Q1 2026 +325K Q1 2026
Data through Q1 2026 · filed Jun 3, 2026
15 of 99

Famous investor activity in Ecovyst Inc. (ECVT)

Ecovyst Inc. (ECVT) insider trading

Company insiders, action and economics first; trade and filed dates last.
Dates
Insider Title Type Price Qty Value Owned ΔOwn Trade date Filed date
Lorance Sarah · Director Sell −$113K
Price $13.33 Qty −8K Owned 55K Trade date Jun 2, 2026 Filed date Jun 3, 2026
Lorance Sarah Director Sell $13.33 −8K −$113K 55K Jun 2, 2026 Jun 3, 2026
Humble Patti A. · Director Grant (A) $124K
Price $13.61 Qty 9K Owned 9K Trade date May 26, 2026 Filed date May 27, 2026
Humble Patti A. Director Grant (A) $13.61 9K $124K 9K May 26, 2026 May 27, 2026
Bitting Kurt · Director, Officer 5 operations 0
Price $3.04 Owned 0 Trade date Mar 12, 2026 Filed date Mar 16, 2026
Bitting Kurt Director, Officer 5 operations $3.04 0 0 Mar 12, 2026 Mar 16, 2026
Feehan Michael · Officer Grant (A) $125K
Price $11.31 Qty 11K Owned 389K Trade date Mar 4, 2026 Filed date Mar 6, 2026
Feehan Michael Officer Grant (A) $11.31 11K $125K 389K Mar 4, 2026 Mar 6, 2026
Koscinski Joseph S. · Officer Grant (A) $125K
Price $11.31 Qty 11K Owned 596K Trade date Mar 4, 2026 Filed date Mar 6, 2026
Koscinski Joseph S. Officer Grant (A) $11.31 11K $125K 596K Mar 4, 2026 Mar 6, 2026
Bradley David A. · Director Grant (A) 19K
Owned 108K Trade date Feb 3, 2026 Filed date Feb 5, 2026
Bradley David A. Director Grant (A) 19K 108K Feb 3, 2026 Feb 5, 2026
Fogarty Kevin Michael · Director Grant (A) 39K
Owned 216K Trade date Feb 3, 2026 Filed date Feb 5, 2026
Fogarty Kevin Michael Director Grant (A) 39K 216K Feb 3, 2026 Feb 5, 2026
Catalano Anna C. · Director Grant (A) 19K
Owned 103K Trade date Feb 3, 2026 Filed date Feb 5, 2026
Catalano Anna C. Director Grant (A) 19K 103K Feb 3, 2026 Feb 5, 2026
Lorance Sarah · Director Grant (A) 19K
Owned 63K Trade date Feb 3, 2026 Filed date Feb 5, 2026
Lorance Sarah Director Grant (A) 19K 63K Feb 3, 2026 Feb 5, 2026
Bitting Kurt · Director, Officer Tax withholding or exercise payment (F) -$267K
Price $10.31 Qty -26K Owned 544K Trade date Feb 3, 2026 Filed date Feb 5, 2026
Bitting Kurt Director, Officer Tax withholding or exercise payment (F) $10.31 -26K -$267K 544K Feb 3, 2026 Feb 5, 2026
Bitting Kurt · Director, Officer Grant (A) 116K
Owned 660K Trade date Feb 3, 2026 Filed date Feb 5, 2026
Bitting Kurt Director, Officer Grant (A) 116K 660K Feb 3, 2026 Feb 5, 2026
Ward Susan F. · Director Grant (A) 19K
Owned 98K Trade date Feb 3, 2026 Filed date Feb 5, 2026
Ward Susan F. Director Grant (A) 19K 98K Feb 3, 2026 Feb 5, 2026
Koscinski Joseph S. · Officer Grant (A) 27K
Owned 585K Trade date Feb 3, 2026 Filed date Feb 5, 2026
Koscinski Joseph S. Officer Grant (A) 27K 585K Feb 3, 2026 Feb 5, 2026
Althoff Donald L. · Director Grant (A) 19K
Owned 58K Trade date Feb 3, 2026 Filed date Feb 5, 2026
Althoff Donald L. Director Grant (A) 19K 58K Feb 3, 2026 Feb 5, 2026
Feehan Michael · Officer Tax withholding or exercise payment (F) -$50K
Price $10.31 Qty -5K Owned 359K Trade date Feb 3, 2026 Filed date Feb 5, 2026
Feehan Michael Officer Tax withholding or exercise payment (F) $10.31 -5K -$50K 359K Feb 3, 2026 Feb 5, 2026
15 of 22
15 of 22 Sign in to continue to older insider transactions.

Ecovyst Inc. (ECVT) activist and large shareholders

What are Schedules 13D and 13G?

Dates
Owner/Filer identity Shares reported % of shares outstanding Filing date
Hotchkis & Wiley Capital Management LLC 12.8M
% of shares outstanding 11.0% Filing date Sep 10, 2024
Hotchkis & Wiley Capital Management LLC 12.8M 11.0% Sep 10, 2024
Blackrock, Inc. 10.8M
% of shares outstanding 9.3% Filing date Nov 8, 2024
Blackrock, Inc. 10.8M 9.3% Nov 8, 2024
Vanguard Group Inc 10.7M
% of shares outstanding 9.2% Filing date Feb 13, 2024
Vanguard Group Inc 10.7M 9.2% Feb 13, 2024
Ineos Ltd 9.0M
% of shares outstanding 7.8% Filing date Jun 27, 2023
Ineos Ltd 9.0M 7.8% Jun 27, 2023
Blackrock, Inc. 8.5M
% of shares outstanding 7.7% Filing date Apr 24, 2026
Blackrock, Inc. 8.5M 7.7% Apr 24, 2026
BlackRock Inc. 8.3M
% of shares outstanding 7.2% Filing date Jan 26, 2024
BlackRock Inc. 8.3M 7.2% Jan 26, 2024
Dimensional Fund Advisors LP 6.6M
% of shares outstanding 6.0% Filing date Jul 14, 2026
Dimensional Fund Advisors LP 6.6M 6.0% Jul 14, 2026
Vanguard Capital Management LLC 5.8M
% of shares outstanding 5.2% Filing date Apr 29, 2026
Vanguard Capital Management LLC 5.8M 5.2% Apr 29, 2026
8 of 10

Ecovyst Inc. (ECVT) ownership FAQ

Who owns ECVT?

171 reporting institutions disclosed ECVT position changes in the Q1 2026 snapshot.

How is institutional activity calculated?

For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.

What are activist and large shareholder filings?

An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.

Where does this data come from?

Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.

Why are ownership reports delayed?

Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.

How are missing table values shown?

A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.