Ecovyst Inc.
US ˙ NYSE ˙ US27923Q1094

SecurityECVT / Ecovyst Inc.
InstitutionXTX Topco Ltd
Latest Disclosed Ownership51,922 shares
Latest Disclosed Value $ 667,717
XTX Topco Ltd reports 187.16% increase in ownership of ECVT / Ecovyst Inc.

On May 15, 2026 - XTX Topco Ltd filed a 13F-HR form disclosing ownership of 51,922 shares of Ecovyst Inc. (US:ECVT) valued at $667,717 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 18,081 shares of Ecovyst Inc.. This represents a change in shares of 187.16% during the quarter. The current value of the position is $671,351 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F ECOVYST COM 27923Q109 51,922 33,841 187.16 668 281.14 0.0116
2026-02-17 2025-12-31 13F ECOVYST COM 27923Q109 18,081 18,081 176 0.0046
2023-08-14 2023-06-30 13F ECOVYST COM 27923Q109 0 -40,203 -100.00 0 -100.00
2023-05-12 2023-03-31 13F ECOVYST COM 27923Q109 40,203 21,721 117.53 444 172.39 0.0931
2023-02-14 2022-12-31 13F ECOVYST COM 27923Q109 18,482 -5,096 -21.61 164 -18.09 0.0348
2022-11-14 2022-09-30 13F ECOVYST COM 27923Q109 23,578 23,578 199 0.0493
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.