PIO 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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| United Utilities Group PLC | United Utilities Group PLC | 2026-04-30 | Added / first present |
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| Geberit AG | Geberit AG | 2026-04-30 | Added / first present |
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| Veolia Environnement S.A. | Veolia Environnement S.A. | 2026-04-30 | Added / first present |
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| Halma PLC | Halma PLC | 2026-04-30 | Added / first present |
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| Manila Water Co., Inc. | Manila Water Co., Inc. | 2026-04-30 | Added / first present |
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| Severn Trent PLC | Severn Trent PLC | 2026-04-30 | Added / first present |
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| Arcadis N.V. | Arcadis N.V. | 2026-04-30 | Added / first present |
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| Ebara Jitsugyo Co., Ltd. | Ebara Jitsugyo Co., Ltd. | 2026-04-30 | Added / first present |
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| AECOM | AECOM | 2025-07-31 | Added / first present |
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| Sulzer AG | Sulzer AG | 2025-07-31 | Added / first present |
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| Cia de Saneamento Basico do Estado de Sao Paulo - SABESP | Cia de Saneamento Basico do Estado de Sao Paulo - SABESP | 2025-07-31 | Added / first present |
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| Coway Co., Ltd. | Coway Co., Ltd. | 2025-07-31 | Added / first present |
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| VA Tech Wabag Ltd. | VA Tech Wabag Ltd. | 2025-07-31 | Added / first present |
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| Astral Ltd. | Astral Ltd. | 2025-07-31 | Added / first present |
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| Toto Ltd. | Toto Ltd. | 2025-04-30 | Added / first present |
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| Ferguson Enterprises Inc. | Ferguson Enterprises Inc. | 2024-10-31 | Added / first present |
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| Core & Main, Inc. | Core & Main, Inc. | 2024-07-31 | Added / first present |
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| Invesco Government & Agency Portfolio | Invesco Government & Agency Portfolio | 2024-04-30 | Added / first present |
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| Kurita Water Industries Ltd. | Kurita Water Industries Ltd. | 2024-04-30 | Added / first present |
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| Aguas Andinas S.A. | Aguas Andinas S.A. | 2024-04-30 | Added / first present |
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| EBARA Corp. | EBARA Corp. | 2024-04-30 | Added / first present |
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| Miura Co., Ltd. | Miura Co., Ltd. | 2024-04-30 | Added / first present |
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| Organo Corp. | Organo Corp. | 2024-04-30 | Added / first present |
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| METAWATER Co., Ltd. | METAWATER Co., Ltd. | 2024-04-30 | Added / first present |
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| Veralto Corp. | Veralto Corp. | 2023-10-31 | Added / first present |
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| AECOM | AECOM | 2023-07-31 | Added / first present |
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| Advanced Drainage Systems, Inc. | Advanced Drainage Systems, Inc. | 2023-07-31 | Added / first present |
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| Consolidated Water Co. Ltd. | Consolidated Water Co. Ltd. | 2023-07-31 | Added / first present |
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| Georg Fischer AG | Georg Fischer AG | 2023-07-31 | Added / first present |
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| Invesco Government & Agency Portfolio | Invesco Government & Agency Portfolio | 2023-04-30 | Added / first present |
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| Tetra Tech, Inc. | Tetra Tech, Inc. | 2022-07-31 | Added / first present |
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| Invesco Government & Agency Portfolio | Invesco Government & Agency Portfolio | 2022-07-31 | Added / first present |
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| Essential Utilities, Inc. | Essential Utilities, Inc. | 2022-07-31 | Added / first present |
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| Aalberts N.V. | Aalberts N.V. | 2022-04-30 | Added / first present |
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| HomeServe PLC | HomeServe PLC | 2022-04-30 | Added / first present |
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| Pennon Group PLC | Pennon Group PLC | 2022-04-30 | Added / first present |
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| Belimo Holding AG | Belimo Holding AG | 2022-04-30 | Added / first present |
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| Genuit Group PLC | Genuit Group PLC | 2022-04-30 | Added / first present |
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| Advanced Drainage Systems, Inc. | Advanced Drainage Systems, Inc. | 2021-07-31 | Added / first present |
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| Invesco Government & Agency Portfolio | Invesco Government & Agency Portfolio | 2021-07-31 | Added / first present |
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| Itron, Inc. | Itron, Inc. | 2021-07-31 | Added / first present |
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| Invesco Government & Agency Portfolio | Invesco Government & Agency Portfolio | 2020-10-31 | Added / first present |
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| Toro Co. (The) | Toro Co. (The) | 2020-07-31 | Added / first present |
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| Invesco Premier U.S. Government Money Portfolio | Invesco Premier U.S. Government Money Portfolio | 2020-04-30 | Added / first present |
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| Essential Utilities, Inc. | Essential Utilities, Inc. | 2020-04-30 | Added / first present |
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Removals
| Ticker | Issuer | Observed date | Change |
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| Toto Ltd. | Toto Ltd. | 2025-07-31 | Removed / first absent |
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| AECOM | AECOM | 2024-01-31 | Removed / first absent |
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| Advanced Drainage Systems, Inc. | Advanced Drainage Systems, Inc. | 2025-07-31 | Removed / first absent |
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| Invesco Government & Agency Portfolio | Invesco Government & Agency Portfolio | 2023-07-31 | Removed / first absent |
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| Tetra Tech, Inc. | Tetra Tech, Inc. | 2023-07-31 | Removed / first absent |
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| Invesco Government & Agency Portfolio | Invesco Government & Agency Portfolio | 2022-10-31 | Removed / first absent |
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| Essential Utilities, Inc. | Essential Utilities, Inc. | 2023-07-31 | Removed / first absent |
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| Aalberts N.V. | Aalberts N.V. | 2025-07-31 | Removed / first absent |
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| HomeServe PLC | HomeServe PLC | 2022-07-31 | Removed / first absent |
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| Pennon Group PLC | Pennon Group PLC | 2023-07-31 | Removed / first absent |
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| Advanced Drainage Systems, Inc. | Advanced Drainage Systems, Inc. | 2022-07-31 | Removed / first absent |
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| Invesco Government & Agency Portfolio | Invesco Government & Agency Portfolio | 2022-04-30 | Removed / first absent |
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| Itron, Inc. | Itron, Inc. | 2022-07-31 | Removed / first absent |
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| Invesco Government & Agency Portfolio | Invesco Government & Agency Portfolio | 2021-01-31 | Removed / first absent |
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| Toro Co. (The) | Toro Co. (The) | 2021-07-31 | Removed / first absent |
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| Invesco Premier U.S. Government Money Portfolio | Invesco Premier U.S. Government Money Portfolio | 2020-07-31 | Removed / first absent |
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| Essential Utilities, Inc. | Essential Utilities, Inc. | 2021-07-31 | Removed / first absent |
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| HD Supply Holdings, Inc. | HD Supply Holdings, Inc. | 2020-07-31 | Removed / first absent |
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| Danaher Corp. | Danaher Corp. | 2024-07-31 | Removed / first absent |
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| Aqua America, Inc. | Aqua America, Inc. | 2020-04-30 | Removed / first absent |
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| A.O. Smith Corp. | A.O. Smith Corp. | 2025-07-31 | Removed / first absent |
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| Invesco Government & Agency Portfolio | Invesco Government & Agency Portfolio | 2020-04-30 | Removed / first absent |
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| ACEA S.p.A. | ACEA S.p.A. | 2023-07-31 | Removed / first absent |
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| China Water Affairs Group Ltd. | China Water Affairs Group Ltd. | 2025-07-31 | Removed / first absent |
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| Invesco Liquid Assets Portfolio | Invesco Liquid Assets Portfolio | 2020-04-30 | Removed / first absent |
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| Consolidated Water Co. Ltd. | Consolidated Water Co. Ltd. | 2022-07-31 | Removed / first absent |
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