Ecovyst Inc.
DE ˙ DB ˙ US27923Q1094
10,80 € 0,00 (0,00%)
2026-06-05
DEL PRIS
SecurityDE:PQGA / Ecovyst Inc.
InstitutionRenaissance Technologies Llc
ManagerJames Simons
Latest Disclosed Ownership306,700 shares
Latest Disclosed Value $ 3,944,162
Renaissance Technologies Llc reports 33.29% increase in ownership of PQGA / Ecovyst Inc.

On May 14, 2026 - Renaissance Technologies Llc filed a 13F-HR form disclosing ownership of 306,700 shares of Ecovyst Inc. (DE:PQGA) valued at $3,312,360 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 230,100 shares of Ecovyst Inc.. This represents a change in shares of 33.29% during the quarter. The current value of the position is $3,312,360 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)
2026-05-14 2026-03-31 13F ECOVYST COM 27923Q109 306,700 76,600 33.29 3,944 76.23 0.0062
2026-02-12 2025-12-31 13F ECOVYST COM 27923Q109 230,100 -10,600 -4.40 2,239 6.17 0.0035
2025-11-13 2025-09-30 13F ECOVYST COM 27923Q109 240,700 -7,900 -3.18 2,109 3.08 0.0028
2025-08-13 2025-06-30 13F ECOVYST COM 27923Q109 248,600 -34,100 -12.06 2,046 16.72 0.0027
2025-05-14 2025-03-31 13F ECOVYST COM 27923Q109 282,700 -109,300 -27.88 1,753 -41.48 0.0027
2025-02-13 2024-12-31 13F ECOVYST COM 27923Q109 392,000 -114,400 -22.59 2,995 -13.67 0.0044
2024-11-13 2024-09-30 13F ECOVYST COM 27923Q109 506,400 167,000 49.20 3,469 13.93 0.0052
2024-08-09 2024-06-30 13F ECOVYST COM 27923Q109 339,400 35,000 11.50 3,044 101,366.67 0.0052
2024-05-13 2024-03-31 13F ECOVYST COM 27923Q109 304,400 -21,700 -6.65 3 0.00 0.0053
2024-02-13 2023-12-31 13F ECOVYST COM 27923Q109 326,100 -43,600 -11.79 3 0.00 0.0049
2023-11-14 2023-09-30 13F ECOVYST COM 27923Q109 369,700 -33,600 -8.33 4 -25.00 0.0062
2023-08-11 2023-06-30 13F ECOVYST COM 27923Q109 403,300 99,800 32.88 5 33.33 0.0067
2023-05-12 2023-03-31 13F ECOVYST COM 27923Q109 303,500 -7,000 -2.25 3 50.00 0.0045
2023-02-13 2022-12-31 13F ECOVYST COM 27923Q109 310,500 129,400 71.45 3 -99.87 0.0038
2022-11-14 2022-09-30 13F ECOVYST COM 27923Q109 181,100 79,900 78.95 1,528 53.26 0.0022
2022-08-12 2022-06-30 13F ECOVYST COM 27923Q109 101,200 -173,500 -63.16 997 -68.61 0.0012
2022-05-13 2022-03-31 13F ECOVYST COM 27923Q109 274,700 88,042 47.17 3,176 66.20 0.0037
2022-02-11 2021-12-31 13F ECOVYST COM 27923Q109 186,658 186,658 1,911 0.0024
2021-11-12 2021-09-30 13F PQ GROUP HLDGS COM 73943T103 0 -197,384 -100.00 0 -100.00
2021-08-13 2021-06-30 13F PQ GROUP HLDGS COM 73943T103 197,384 197,384 3,032 0.0038
2021-02-10 2020-12-31 13F PQ GROUP HLDGS COM 73943T103 0 -130,000 -100.00 0 -100.00
2020-11-13 2020-09-30 13F PQ GROUP HLDGS COM 73943T103 130,000 79,000 154.90 1,334 97.63 0.0013
2020-08-13 2020-06-30 13F PQ GROUP HLDGS COM 73943T103 51,000 -84,200 -62.28 675 -54.21 0.0006
2020-05-14 2020-03-31 13F PQ GROUP HLDGS COM 73943T103 135,200 -44,200 -24.64 1,474 -52.17 0.0014
2020-02-13 2019-12-31 13F PQ GROUP HLDGS COM 73943T103 179,400 21,200 13.40 3,082 22.20 0.0024
2019-11-13 2019-09-30 13F PQ GROUP HLDGS COM 73943T103 158,200 49,000 44.87 2,522 45.70 0.0021
2019-08-12 2019-06-30 13F PQ GROUP HLDGS COM 73943T103 109,200 52,100 91.24 1,731 99.88 0.0015
2019-05-14 2019-03-31 13F PQ GROUP HLDGS COM 73943T103 57,100 57,100 -47.71 866 -49.97 0.0008
2019-02-12 2018-12-31 13F PQ GROUP HLDGS COM 73943T103 0 -72,000 -100.00 0 -100.00
2018-11-13 2018-09-30 13F PQ GROUP HLDGS COM 73943T103 72,000 72,000 1,258 0.0013
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.