Ecovyst Inc.
DE ˙ DB ˙ US27923Q1094
10,80 € 0,00 (0,00%)
2026-06-05
DEL PRIS
SecurityDE:PQGA / Ecovyst Inc.
InstitutionMillennium Management Llc
ManagerIsrael Englander
Latest Disclosed Ownership129,221 shares
Latest Disclosed Value $ 1,661,782
Millennium Management Llc ownership in PQGA / Ecovyst Inc.

On May 15, 2026 - Millennium Management Llc filed a 13F-HR form disclosing ownership of 129,221 shares of Ecovyst Inc. (DE:PQGA) valued at $1,395,587 USD as of March 31, 2026. The entity filed a previous 13F-HR on November 14, 2025 disclosing 0 shares of Ecovyst Inc.. The current value of the position is $1,395,587 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 129,221 129,221 1,662 0.0007
2025-11-14 2025-09-30 13F ECOVYST COM 27923Q109 0 -1,417,306 -100.00 0 -100.00
2025-08-14 2025-06-30 13F ECOVYST COM 27923Q109 1,417,306 891,293 169.44 11,664 257.68 0.0056
2025-05-15 2025-03-31 13F ECOVYST COM 27923Q109 526,013 242,807 85.74 3,261 50.76 0.0017
2025-02-14 2024-12-31 13F ECOVYST COM 27923Q109 283,206 283,206 2,164 0.0011
2024-11-14 2024-09-30 13F ECOVYST COM 27923Q109 0 -55,286 -100.00 0 -100.00
2024-08-14 2024-06-30 13F ECOVYST COM 27923Q109 55,286 -442,576 -88.90 496 -91.08 0.0002
2024-05-15 2024-03-31 13F ECOVYST COM 27923Q109 497,862 -14,737 -2.87 5,551 10.84 0.0024
2024-02-14 2023-12-31 13F ECOVYST COM 27923Q109 512,599 456,444 812.83 5,008 807.25 0.0022
2023-11-14 2023-09-30 13F ECOVYST COM 27923Q109 56,155 -558,553 -90.86 553 -92.16 0.0003
2023-08-14 2023-06-30 13F ECOVYST COM 27923Q109 614,708 -215,663 -25.97 7,045 -23.23 0.0035
2023-05-15 2023-03-31 13F ECOVYST COM 27923Q109 830,371 -875,101 -51.31 9,176 -39.27 0.0053
2023-02-14 2022-12-31 13F ECOVYST COM 27923Q109 1,705,472 245,466 16.81 15,110 22.63 0.0084
2022-11-14 2022-09-30 13F ECOVYST COM 27923Q109 1,460,006 503,385 52.62 12,322 30.77 0.0073
2022-08-15 2022-06-30 13F ECOVYST COM 27923Q109 956,621 -596,910 -38.42 9,423 -47.53 0.0058
2022-05-16 2022-03-31 13F ECOVYST COM 27923Q109 1,553,531 274,397 21.45 17,959 37.11 0.0095
2022-02-14 2021-12-31 13F ECOVYST COM 27923Q109 1,279,134 1,052,756 465.04 13,098 396.14 0.0067
2021-11-15 2021-09-30 13F ECOVYST COM 27923Q109 226,378 2,851 1.28 2,640 -23.10 0.0016
2021-08-16 2021-06-30 13F PQ GROUP HLDGS COM 73943T103 223,527 117,608 111.04 3,433 94.06 0.0021
2021-05-17 2021-03-31 13F PQ GROUP HLDGS COM 73943T103 105,919 91,047 612.20 1,769 734.43 0.0013
2021-02-16 2020-12-31 13F PQ GROUP HLDGS COM 73943T103 14,872 -41,124 -73.44 212 -63.13 0.0002
2020-11-16 2020-09-30 13F PQ GROUP HLDGS COM 73943T103 55,996 -114,204 -67.10 575 -74.48 0.0007
2020-08-14 2020-06-30 13F PQ GROUP HLDGS COM 73943T103 170,200 170,200 2,253 0.0031
2019-11-14 2019-09-30 13F PQ GROUP HLDGS COM 73943T103 0 -27,945 -100.00 0 -100.00
2019-08-15 2019-06-30 13F/A-1 PQ GROUP HLDGS COM 73943T103 27,945 27,945 443 0.0007
2019-08-14 2019-06-30 13F PQ GROUP HLDGS COM 73943T103 27,945 27,945 443
2019-02-15 2018-12-31 13F/A-1 PQ GROUP HLDGS COM 73943T103 0 -57,658 -100.00 0 -100.00
2018-11-14 2018-09-30 13F PQ GROUP HLDGS COM 73943T103 57,658 57,658 1,007 0.0012
2018-02-14 2017-12-31 13F PQ GROUP HLDGS COM 73943T103 0 -1,076,252 -100.00 0 -100.00
2017-11-14 2017-09-30 13F PQ GROUP HLDGS COM 73943T103 1,076,252 1,076,252 18,565 0.0283
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.