Ecovyst Inc.
DE ˙ DB ˙ US27923Q1094
10,80 € ↓ -0,20 (-1,82%)
2026-06-04
DEL PRIS
SecurityDE:PQGA / Ecovyst Inc.
InstitutionState Street Corp
Latest Disclosed Ownership2,577,391 shares
Latest Disclosed Value $ 33,145,248
State Street Corp reports 1.34% increase in ownership of PQGA / Ecovyst Inc.

On May 15, 2026 - State Street Corp filed a 13F-HR form disclosing ownership of 2,577,391 shares of Ecovyst Inc. (DE:PQGA) valued at $27,835,823 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 2,543,242 shares of Ecovyst Inc.. This represents a change in shares of 1.34% during the quarter. The current value of the position is $27,835,823 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 2,577,391 34,149 1.34 33,145 33.95 0.0011
2026-02-13 2025-12-31 13F ECOVYST COM 27923Q109 2,543,242 17,702 0.70 24,746 11.85 0.0008
2025-11-14 2025-09-30 13F ECOVYST COM 27923Q109 2,525,540 -33,607 -1.31 22,124 5.04 0.0008
2025-08-14 2025-06-30 13F ECOVYST COM 27923Q109 2,559,147 33,815 1.34 21,062 34.51 0.0008
2025-05-15 2025-03-31 13F ECOVYST COM 27923Q109 2,525,332 2,018 0.08 15,657 -18.78 0.0006
2025-02-14 2024-12-31 13F ECOVYST COM 27923Q109 2,523,314 96,805 3.99 19,278 15.99 0.0008
2024-11-14 2024-09-30 13F ECOVYST COM 27923Q109 2,426,509 33,292 1.39 16,622 -22.57 0.0007
2024-08-14 2024-06-30 13F ECOVYST COM 27923Q109 2,393,217 262,409 12.31 21,467 -9.64 0.0009
2024-05-15 2024-03-31 13F ECOVYST COM 27923Q109 2,130,808 -21,463 -1.00 23,759 12.99 0.0011
2024-02-14 2023-12-31 13F ECOVYST COM 27923Q109 2,152,271 210,407 10.84 21,028 10.05 0.0010
2023-11-14 2023-09-30 13F ECOVYST COM 27923Q109 1,941,864 51,811 2.74 19,108 -11.79 0.0011
2023-08-14 2023-06-30 13F ECOVYST COM 27923Q109 1,890,053 147,125 8.44 21,660 12.47 0.0011
2023-05-15 2023-03-31 13F ECOVYST COM 27923Q109 1,742,928 268,718 18.23 19,259 47.45 0.0011
2023-05-15 2022-12-31 13F/A-99 ECOVYST COM 27923Q109 1,474,210 247,411 20.17 13,062 26.14 0.0008
2023-05-15 2022-12-31 13F ECOVYST COM 27923Q109 1,474,210 247,411 13,062 0.0008
2022-11-15 2022-09-30 13F ECOVYST COM 27923Q109 1,226,799 104,147 9.28 10,354 -6.37 0.0007
2022-08-15 2022-06-30 13F ECOVYST COM 27923Q109 1,122,652 110,817 10.95 11,058 -5.46 0.0007
2022-05-16 2022-03-31 13F ECOVYST COM 27923Q109 1,011,835 38,711 3.98 11,697 17.38 0.0006
2022-02-14 2021-12-31 13F ECOVYST COM 27923Q109 973,124 11,407 1.19 9,965 -11.14 0.0005
2021-11-15 2021-09-30 13F ECOVYST COM 27923Q109 961,717 25,198 2.69 11,214 -22.04 0.0006
2021-08-16 2021-06-30 13F PQ GROUP HLDGS COM 73943T103 936,519 196,151 26.49 14,385 16.35 0.0008
2021-07-09 2021-03-31 13F/A-1 PQ GROUP HLDGS COM 73943T103 740,368 -37,305 -4.80 12,364 11.49 0.0007
2021-05-17 2021-03-31 13F PQ GROUP HLDGS COM 73943T103 740,368 -37,305 12,364 0.0007
2021-02-16 2020-12-31 13F PQ GROUP HLDGS COM 73943T103 777,673 -19,545 -2.45 11,090 35.59 0.0007
2020-11-10 2020-09-30 13F PQ GROUP HLDGS COM 73943T103 797,218 -12,074 -1.49 8,179 -23.67 0.0006
2020-08-14 2020-06-30 13F PQ GROUP HLDGS COM 73943T103 809,292 4,698 0.58 10,715 22.18 0.0008
2020-06-19 2020-03-31 13F/A-1 PQ GROUP HLDGS COM 73943T103 804,594 36,765 4.79 8,770 -33.52 0.0008
2020-05-11 2020-03-31 13F PQ GROUP HLDGS COM 73943T103 804,594 36,765 8,770 770.1826
2020-02-06 2019-12-31 13F PQ GROUP HLDGS COM 73943T103 767,829 26,589 3.59 13,191 11.65 0.0009
2019-11-14 2019-09-30 13F PQ GROUP HLDGS COM 73943T103 741,240 22,871 3.18 11,815 3.77 0.0009
2019-08-14 2019-06-30 13F PQ GROUP HLDGS COM 73943T103 718,369 1,016 0.14 11,386 4.63 0.0008
2019-05-15 2019-03-31 13F PQ GROUP HLDGS COM 73943T103 717,353 23,576 3.40 10,882 5.91 0.0008
2019-02-12 2018-12-31 13F PQ GROUP HLDGS COM 73943T103 693,777 9,885 1.45 10,275 -13.99 0.0009
2018-11-09 2018-09-30 13F PQ GROUP HOLDINGS Common equity shares 73943T103 683,892 56,705 9.04 11,946 5.81 0.0009
2018-08-14 2018-06-30 13F PQ GROUP HOLDINGS Common equity shares 73943T103 627,187 175,586 38.88 11,290 78.95 0.0009
2018-05-15 2018-03-31 13F PQ GROUP HOLDINGS Common equity shares 73943T103 451,601 49,704 12.37 6,309 -4.57 0.0005
2018-02-14 2017-12-31 13F PQ GROUP HOLDINGS Common equity shares 73943T103 401,897 401,897 6,611 0.0005
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.