PSCE additions & removals
Changes are observation-bounded: an addition is the first retained official snapshot containing a security after an earlier absence; a removal is its first retained absence. Baseline holdings receive no invented addition date.
Additions
| Ticker | Issuer | Observed date | Change |
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| Kinetik Holdings Inc. | Kinetik Holdings Inc. | 2025-11-30 | Added / first present |
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| Noble Corp. PLC | Noble Corp. PLC | 2025-11-30 | Added / first present |
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| Kodiak Gas Services, Inc. | Kodiak Gas Services, Inc. | 2025-08-31 | Added / first present |
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| Invesco Government & Agency Portfolio | Invesco Government & Agency Portfolio | 2025-02-28 | Added / first present |
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| International Seaways, Inc. | International Seaways, Inc. | 2025-02-28 | Added / first present |
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| Core Natural Resources, Inc. | Core Natural Resources, Inc. | 2025-02-28 | Added / first present |
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| Crescent Energy Co. | Crescent Energy Co. | 2024-11-30 | Added / first present |
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| Atlas Energy Solutions Inc. | Atlas Energy Solutions Inc. | 2024-11-30 | Added / first present |
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| Innovex International, Inc. | Innovex International, Inc. | 2024-11-30 | Added / first present |
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| Cactus, Inc. | Cactus, Inc. | 2024-08-31 | Added / first present |
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| Tidewater Inc. | Tidewater Inc. | 2024-08-31 | Added / first present |
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| Magnolia Oil & Gas Corp. | Magnolia Oil & Gas Corp. | 2024-05-31 | Added / first present |
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| Peabody Energy Corp. | Peabody Energy Corp. | 2024-02-29 | Added / first present |
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| Invesco Government & Agency Portfolio | Invesco Government & Agency Portfolio | 2023-11-30 | Added / first present |
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| Liberty Energy Inc. | Liberty Energy Inc. | 2023-11-30 | Added / first present |
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| California Resources Corp. | California Resources Corp. | 2023-08-31 | Added / first present |
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| CVR Energy, Inc. | CVR Energy, Inc. | 2023-05-31 | Added / first present |
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| NexTier Oilfield Solutions Inc. | NexTier Oilfield Solutions Inc. | 2023-05-31 | Added / first present |
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| Core Laboratories Inc. | Core Laboratories Inc. | 2023-05-31 | Added / first present |
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| Invesco Government & Agency Portfolio | Invesco Government & Agency Portfolio | 2023-02-28 | Added / first present |
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| Comstock Resources, Inc. | Comstock Resources, Inc. | 2023-02-28 | Added / first present |
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| Northern Oil and Gas, Inc. | Northern Oil and Gas, Inc. | 2023-02-28 | Added / first present |
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| Civitas Resources, Inc. | Civitas Resources, Inc. | 2021-11-30 | Added / first present |
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| World Fuel Services Corp. | World Fuel Services Corp. | 2021-08-31 | Added / first present |
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| PBF Energy, Inc. | PBF Energy, Inc. | 2020-11-30 | Added / first present |
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| Invesco Government & Agency Portfolio | Invesco Government & Agency Portfolio | 2020-11-30 | Added / first present |
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| Matador Resources Co. | Matador Resources Co. | 2020-08-31 | Added / first present |
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| Invesco Premier U.S. Government Money Portfolio | Invesco Premier U.S. Government Money Portfolio | 2020-08-31 | Added / first present |
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| Laredo Petroleum, Inc. | Laredo Petroleum, Inc. | 2020-08-31 | Added / first present |
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| Bristow Group, Inc. | Bristow Group, Inc. | 2020-08-31 | Added / first present |
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| Callon Petroleum Co. | Callon Petroleum Co. | 2020-08-31 | Added / first present |
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| Helmerich & Payne, Inc. | Helmerich & Payne, Inc. | 2020-05-31 | Added / first present |
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| Patterson-UTI Energy, Inc. | Patterson-UTI Energy, Inc. | 2020-05-31 | Added / first present |
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| Invesco Private Government Fund | Invesco Private Government Fund | 2020-05-31 | Added / first present |
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| Core Laboratories N.V. | Core Laboratories N.V. | 2020-05-31 | Added / first present |
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| Nabors Industries Ltd. | Nabors Industries Ltd. | 2020-05-31 | Added / first present |
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| Southwestern Energy Co. | Southwestern Energy Co. | 2020-02-29 | Added / first present |
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| Oasis Petroleum, Inc. | Oasis Petroleum, Inc. | 2020-02-29 | Added / first present |
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| Dorian LPG Ltd. | Dorian LPG Ltd. | 2020-02-29 | Added / first present |
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Removals
| Ticker | Issuer | Observed date | Change |
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| Invesco Government & Agency Portfolio | Invesco Government & Agency Portfolio | 2026-02-28 | Removed / first absent |
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| Invesco Government & Agency Portfolio | Invesco Government & Agency Portfolio | 2024-05-31 | Removed / first absent |
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| NexTier Oilfield Solutions Inc. | NexTier Oilfield Solutions Inc. | 2023-11-30 | Removed / first absent |
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| Invesco Government & Agency Portfolio | Invesco Government & Agency Portfolio | 2023-05-31 | Removed / first absent |
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| Civitas Resources, Inc. | Civitas Resources, Inc. | 2023-11-30 | Removed / first absent |
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| PBF Energy, Inc. | PBF Energy, Inc. | 2022-11-30 | Removed / first absent |
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| Invesco Government & Agency Portfolio | Invesco Government & Agency Portfolio | 2022-05-31 | Removed / first absent |
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| Matador Resources Co. | Matador Resources Co. | 2022-05-31 | Removed / first absent |
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| Invesco Premier U.S. Government Money Portfolio | Invesco Premier U.S. Government Money Portfolio | 2020-11-30 | Removed / first absent |
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| Laredo Petroleum, Inc. | Laredo Petroleum, Inc. | 2026-02-28 | Removed / first absent |
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| Callon Petroleum Co. | Callon Petroleum Co. | 2024-05-31 | Removed / first absent |
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| Core Laboratories N.V. | Core Laboratories N.V. | 2023-05-31 | Removed / first absent |
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| Nabors Industries Ltd. | Nabors Industries Ltd. | 2025-05-31 | Removed / first absent |
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| Southwestern Energy Co. | Southwestern Energy Co. | 2022-08-31 | Removed / first absent |
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| Oasis Petroleum, Inc. | Oasis Petroleum, Inc. | 2020-11-30 | Removed / first absent |
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| Range Resources Corp. | Range Resources Corp. | 2022-05-31 | Removed / first absent |
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| Invesco Government & Agency Portfolio | Invesco Government & Agency Portfolio | 2020-05-31 | Removed / first absent |
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| Invesco Liquid Assets Portfolio | Invesco Liquid Assets Portfolio | 2020-05-31 | Removed / first absent |
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| Dril-Quip, Inc. | Dril-Quip, Inc. | 2024-11-30 | Removed / first absent |
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| PDC Energy, Inc. | PDC Energy, Inc. | 2022-02-28 | Removed / first absent |
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| Callon Petroleum Co. | Callon Petroleum Co. | 2020-08-31 | Removed / first absent |
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| QEP Resources, Inc. | QEP Resources, Inc. | 2021-05-31 | Removed / first absent |
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| SRC Energy, Inc. | SRC Energy, Inc. | 2020-02-29 | Removed / first absent |
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| ProPetro Holding Corp. | ProPetro Holding Corp. | 2025-11-30 | Removed / first absent |
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| Whiting Petroleum Corp. | Whiting Petroleum Corp. | 2020-05-31 | Removed / first absent |
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| McDermott International, Inc. | McDermott International, Inc. | 2020-02-29 | Removed / first absent |
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| CONSOL Energy, Inc. | CONSOL Energy, Inc. | 2025-02-28 | Removed / first absent |
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| Newpark Resources, Inc. | Newpark Resources, Inc. | 2020-11-30 | Removed / first absent |
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| Matrix Service Co. | Matrix Service Co. | 2021-02-28 | Removed / first absent |
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| Gulfport Energy Corp. | Gulfport Energy Corp. | 2020-11-30 | Removed / first absent |
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| DMC Global, Inc. | DMC Global, Inc. | 2023-08-31 | Removed / first absent |
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| Invesco Premier U.S. Government Money Portfolio | Invesco Premier U.S. Government Money Portfolio | 2020-05-31 | Removed / first absent |
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| KLX Energy Services Holdings, Inc. | KLX Energy Services Holdings, Inc. | 2020-05-31 | Removed / first absent |
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| US Silica Holdings, Inc. | US Silica Holdings, Inc. | 2024-08-31 | Removed / first absent |
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| SEACOR Holdings, Inc. | SEACOR Holdings, Inc. | 2020-11-30 | Removed / first absent |
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| Oil States International, Inc. | Oil States International, Inc. | 2024-05-31 | Removed / first absent |
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| Carrizo Oil & Gas, Inc. | Carrizo Oil & Gas, Inc. | 2020-02-29 | Removed / first absent |
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| Renewable Energy Group, Inc. | Renewable Energy Group, Inc. | 2022-08-31 | Removed / first absent |
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| Denbury Resources, Inc. | Denbury Resources, Inc. | 2020-08-31 | Removed / first absent |
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| Laredo Petroleum, Inc. | Laredo Petroleum, Inc. | 2020-08-31 | Removed / first absent |
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| Jagged Peak Energy, Inc. | Jagged Peak Energy, Inc. | 2020-02-29 | Removed / first absent |
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| Bonanza Creek Energy, Inc. | Bonanza Creek Energy, Inc. | 2021-11-30 | Removed / first absent |
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| Penn Virginia Corp. | Penn Virginia Corp. | 2023-08-31 | Removed / first absent |
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| Exterran Corp. | Exterran Corp. | 2021-05-31 | Removed / first absent |
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| Green Plains, Inc. | Green Plains, Inc. | 2025-05-31 | Removed / first absent |
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| Diamond Offshore Drilling, Inc. | Diamond Offshore Drilling, Inc. | 2020-05-31 | Removed / first absent |
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| TETRA Technologies, Inc. | TETRA Technologies, Inc. | 2020-08-31 | Removed / first absent |
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| Geospace Technologies Corp. | Geospace Technologies Corp. | 2021-02-28 | Removed / first absent |
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| Era Group, Inc. | Era Group, Inc. | 2020-08-31 | Removed / first absent |
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| Unit Corp. | Unit Corp. | 2020-02-29 | Removed / first absent |
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| HighPoint Resources Corp. | HighPoint Resources Corp. | 2020-08-31 | Removed / first absent |
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| Ring Energy, Inc. | Ring Energy, Inc. | 2020-08-31 | Removed / first absent |
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| Nabors Industries Ltd. | Nabors Industries Ltd. | 2020-05-31 | Removed / first absent |
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| Noble Corp. PLC | Noble Corp. PLC | 2020-05-31 | Removed / first absent |
|---|
| Valaris PLC | Valaris PLC | 2020-08-31 | Removed / first absent |
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