Ecovyst Inc.
DE ˙ DB ˙ US27923Q1094
10,80 € ↓ -0,20 (-1,82%)
2026-06-04
DEL PRIS
SecurityDE:PQGA / Ecovyst Inc.
InstitutionVanguard Group Inc
Latest Disclosed Ownership0 shares
Ownership 0.00%
Vanguard Group Inc ownership in PQGA / Ecovyst Inc.

2026-03-26 - Vanguard Group Inc has filed an SCHEDULE 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 0 shares of Ecovyst Inc. (DE:PQGA). This represents 0.0 percent ownership of the company. In their previous filing dated 2024-02-13 , Vanguard Group Inc had reported owning 10,703,781 shares, indicating a decrease of -100.00 percent.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File
Date		Effective
Date		Form Prev
Shares		 Latest
Shares		 ΔShares
(Percent)		 Ownership
(Percent)		 ΔOwnership
(Percent)
2026-03-26 2026-03-26 13G/A 10,703,781 0 -100.00 0.00 -100.00
2024-02-13 2024-02-13 13G/A 8,485,192 10,703,781 26.15 9.22 41.63
2023-02-09 2023-02-09 13G 8,485,192 6.51

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

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.

Upgrade to unlock premium data and export to Excel .

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)
2026-01-29 2025-12-31 13F ECOVYST COM 27923Q109 11,112,611 191,394 1.75 108,126 13.02 0.0016
2025-11-07 2025-09-30 13F ECOVYST COM 27923Q109 10,921,217 267,695 2.51 95,670 9.11 0.0014
2025-08-11 2025-06-30 13F ECOVYST COM 27923Q109 10,653,522 -171,592 -1.59 87,678 30.64 0.0014
2025-05-09 2025-03-31 13F ECOVYST COM 27923Q109 10,825,114 -101,019 -0.92 67,116 -19.60 0.0012
2025-02-11 2024-12-31 13F ECOVYST COM 27923Q109 10,926,133 56,142 0.52 83,476 12.11 0.0015
2024-11-13 2024-09-30 13F ECOVYST COM 27923Q109 10,869,991 195,070 1.83 74,459 -22.24 0.0013
2024-08-13 2024-06-30 13F ECOVYST COM 27923Q109 10,674,921 45,597 0.43 95,754 -19.21 0.0018
2024-05-10 2024-03-31 13F ECOVYST COM 27923Q109 10,629,324 -74,457 -0.70 118,517 13.33 0.0023
2024-03-11 2023-12-31 13F/A-1 ECOVYST COM 27923Q109 10,703,781 -91,599 -0.85 104,576 -1.55 0.0023
2024-02-14 2023-12-31 13F ECOVYST COM 27923Q109 10,703,781 -91,599 104,576 0.0020
2023-12-18 2023-09-30 13F/A-1 ECOVYST COM 27923Q109 10,795,380 1,128,473 11.67 106,227 -4.11 0.0026
2023-11-14 2023-09-30 13F ECOVYST COM 27923Q109 10,795,380 1,128,473 106,227 0.0005
2023-08-14 2023-06-30 13F ECOVYST COM 27923Q109 9,666,907 398,658 4.30 110,783 8.17 0.0026
2023-07-14 2023-03-31 13F/A-1 ECOVYST COM 27923Q109 9,268,249 783,057 9.23 102,414 36.23 0.0026
2023-05-15 2023-03-31 13F ECOVYST COM 27923Q109 9,268,249 783,057 102,414 0.0026
2023-02-10 2022-12-31 13F ECOVYST COM 27923Q109 8,485,192 1,096,420 14.84 75,179 20.55 0.0020
2022-11-14 2022-09-30 13F ECOVYST COM 27923Q109 7,388,772 1,460,053 24.63 62,362 6.79 0.0018
2022-08-12 2022-06-30 13F ECOVYST COM 27923Q109 5,928,719 820,169 16.05 58,398 -1.11 0.0016
2022-05-13 2022-03-31 13F ECOVYST COM 27923Q109 5,108,550 -454,695 -8.17 59,056 3.67 0.0014
2022-02-14 2021-12-31 13F ECOVYST COM 27923Q109 5,563,245 631,768 12.81 56,967 -0.93 0.0013
2021-11-12 2021-09-30 13F ECOVYST COM 27923Q109 4,931,477 -6,714 -0.14 57,501 -24.19 0.0014
2021-08-13 2021-06-30 13F PQ GROUP HLDGS COM 73943T103 4,938,191 1,294,834 35.54 75,850 24.66 0.0019
2021-05-14 2021-03-31 13F PQ GROUP HLDGS COM 73943T103 3,643,357 80,459 2.26 60,844 19.76 0.0016
2021-02-12 2020-12-31 13F PQ GROUP HLDGS COM 73943T103 3,562,898 116,322 3.38 50,807 43.68 0.0015
2020-11-16 2020-09-30 13F PQ GROUP HLDGS COM 73943T103 3,446,576 -172,868 -4.78 35,362 -26.21 0.0012
2020-08-14 2020-06-30 13F PQ GROUP HLDGS COM 73943T103 3,619,444 -80,462 -2.17 47,922 18.83 0.0017
2020-05-15 2020-03-31 13F PQ GROUP HLDGS COM 73943T103 3,699,906 26,286 0.72 40,329 -36.10 0.0017
2020-02-14 2019-12-31 13F PQ GROUP HLDGS COM 73943T103 3,673,620 114,182 3.21 63,113 11.24 0.0022
2019-11-14 2019-09-30 13F PQ GROUP HLDGS COM 73943T103 3,559,438 1,668 0.05 56,737 0.61 0.0021
2019-08-14 2019-06-30 13F PQ GROUP HLDGS COM 73943T103 3,557,770 28,837 0.82 56,391 5.34 0.0021
2019-05-15 2019-03-31 13F PQ GROUP HLDGS COM 73943T103 3,528,933 41,679 1.20 53,533 3.65 0.0021
2019-02-14 2018-12-31 13F PQ GROUP HLDGS COM 73943T103 3,487,254 492,711 16.45 51,646 -1.28 0.0023
2018-12-13 2018-09-30 13F/A-2 PQ GROUP HLDGS COM 73943T103 2,994,543 93,194 3.21 52,315 0.17 0.0020
2018-11-23 2018-09-30 13F/A-1 PQ GROUP HLDGS COM 73943T103 2,994,543 0 52,315 0.0020
2018-11-14 2018-09-30 13F PQ GROUP HLDGS COM 73943T103 2,994,543 93,194 52,315
2018-08-14 2018-06-30 13F PQ GROUP HLDGS COM 73943T103 2,901,349 649,731 28.86 52,225 66.03 0.0022
2018-05-15 2018-03-31 13F PQ GROUP HLDGS COM 73943T103 2,251,618 -392,437 -14.84 31,456 -27.68 0.0014
2018-02-14 2017-12-31 13F PQ GROUP HLDGS COM 73943T103 2,644,055 1,891,961 251.56 43,495 235.27 0.0019
2017-11-14 2017-09-30 13F PQ GROUP HLDGS COM 73943T103 752,094 752,094 12,973 0.0006
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.