Ecovyst Inc.
DE ˙ DB ˙ US27923Q1094
11,10 € ↓ -0,10 (-0,89%)
2026-05-29
DEL PRIS
SecurityDE:PQGA / Ecovyst Inc.
InstitutionAlliancebernstein L.p.
Latest Disclosed Ownership124,260 shares
Latest Disclosed Value $ 1,209,050
Alliancebernstein L.p. ownership in PQGA / Ecovyst Inc.

On May 15, 2026 - Alliancebernstein L.p. filed a 13F-HR form disclosing ownership of 124,260 shares of Ecovyst Inc. (DE:PQGA) valued at $1,342,008 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 124,260 shares of Ecovyst Inc.. This represents a change in shares of 0.00% during the quarter. The current value of the position is $1,379,286 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 124,260 0 0.00 1,209 0.00 0.0004
2026-02-17 2025-12-31 13F ECOVYST COM 27923Q109 124,260 0 0.00 1,209 11.12 0.0004
2025-11-14 2025-09-30 13F ECOVYST COM 27923Q109 124,260 -2,366,349 -95.01 1,089 -94.69 0.0003
2025-08-14 2025-06-30 13F ECOVYST COM 27923Q109 2,490,609 -1,964,571 -44.10 20,498 -25.79 0.0067
2025-05-15 2025-03-31 13F ECOVYST COM 27923Q109 4,455,180 -27,413 -0.61 27,622 -19.34 0.0100
2025-02-12 2024-12-31 13F ECOVYST COM 27923Q109 4,482,593 -274,456 -5.77 34,247 5.10 0.0116
2024-11-14 2024-09-30 13F ECOVYST COM 27923Q109 4,757,049 1,081,234 29.41 32,586 -1.17 0.0109
2024-08-14 2024-06-30 13F ECOVYST COM 27923Q109 3,675,815 1,019,120 38.36 32,972 11.31 0.0115
2024-05-14 2024-03-31 13F ECOVYST COM 27923Q109 2,656,695 2,571,765 3,028.10 29,622 3,473.22 0.0105
2024-02-14 2023-12-31 13F ECOVYST COM 27923Q109 84,930 0 0.00 830 -0.72 0.0003
2023-11-14 2023-09-30 13F ECOVYST COM 27923Q109 84,930 -53 -0.06 836 -14.18 0.0004
2023-08-15 2023-06-30 13F ECOVYST COM 27923Q109 84,983 21,983 34.89 974 39.80 0.0004
2023-05-15 2023-03-31 13F ECOVYST COM 27923Q109 63,000 0 0.00 696 24.73 0.0003
2023-02-15 2022-12-31 13F ECOVYST COM 27923Q109 63,000 23,200 58.29 558 66.07 0.0003
2022-11-15 2022-09-30 13F ECOVYST COM 27923Q109 39,800 13,400 50.76 336 29.23 0.0002
2022-08-15 2022-06-30 13F ECOVYST COM 27923Q109 26,400 11,500 77.18 260 51.16 0.0001
2022-05-13 2022-03-31 13F ECOVYST COM 27923Q109 14,900 -1,300 -8.02 172 3.61 0.0001
2022-02-14 2021-12-31 13F ECOVYST COM 27923Q109 16,200 -26,296 -61.88 166 -66.53 0.0001
2021-11-10 2021-09-30 13F ECOVYST COM 27923Q109 42,496 23,296 121.33 496 68.14 0.0002
2021-07-30 2021-06-30 13F PQ GROUP HLDGS COM 73943T103 19,200 -3,000 -13.51 295 -20.49 0.0001
2021-05-06 2021-03-31 13F PQ GROUP HLDGS COM 73943T103 22,200 -3,900 -14.94 371 -0.27 0.0002
2021-02-08 2020-12-31 13F PQ GROUP HLDGS COM 73943T103 26,100 -10,900 -29.46 372 -2.11 0.0002
2020-11-12 2020-09-30 13F PQ GROUP HLDGS COM 73943T103 37,000 -6,800 -15.53 380 -34.48 0.0002
2020-08-13 2020-06-30 13F PQ GROUP HLDGS COM 73943T103 43,800 800 1.86 580 23.67 0.0003
2020-05-14 2020-03-31 13F PQ GROUP HLDGS COM 73943T103 43,000 -100 -0.23 469 -36.62 0.0003
2020-02-18 2019-12-31 13F PQ GROUP HLDGS COM 73943T103 43,100 -1,600 -3.58 740 3.79 0.0004
2019-11-14 2019-09-30 13F PQ GROUP HLDGS COM 73943T103 44,700 2,100 4.93 713 5.63 0.0004
2019-08-14 2019-06-30 13F PQ GROUP HLDGS COM 73943T103 42,600 31,200 273.68 675 290.17 0.0004
2019-05-14 2019-03-31 13F PQ GROUP HLDGS COM 73943T103 11,400 -2,700 -19.15 173 -17.22 0.0001
2019-02-13 2018-12-31 13F PQ GROUP HLDGS COM 73943T103 14,100 1,400 11.02 209 -5.86 0.0002
2018-11-08 2018-09-30 13F PQ GROUP HLDGS COM 73943T103 12,700 12,700 222 0.0001
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.