QQA 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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| Ferrovial N.V. | Ferrovial N.V. | 2026-04-30 | Added / first present |
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| Sandisk Corp. | Sandisk Corp. | 2026-04-30 | Added / first present |
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| Walmart Inc. | Walmart Inc. | 2026-01-31 | Added / first present |
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| Western Digital Corp. | Western Digital Corp. | 2026-01-31 | Added / first present |
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| Alnylam Pharmaceuticals, Inc. | Alnylam Pharmaceuticals, Inc. | 2026-01-31 | Added / first present |
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| Monolithic Power Systems, Inc. | Monolithic Power Systems, Inc. | 2026-01-31 | Added / first present |
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| Insmed Inc. | Insmed Inc. | 2026-01-31 | Added / first present |
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| Seagate Technology Holdings PLC | Seagate Technology Holdings PLC | 2026-01-31 | Added / first present |
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| Solstice Advanced Materials Inc. | Solstice Advanced Materials Inc. | 2025-10-31 | Added / first present |
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| Shopify Inc. | Shopify Inc. | 2025-07-31 | Added / first present |
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| Thomson Reuters Corp. | Thomson Reuters Corp. | 2025-07-31 | Added / first present |
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| Invesco Premier U.S. Government Money Portfolio | Invesco Premier U.S. Government Money Portfolio | 2025-04-30 | Added / first present |
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Removals
| Ticker | Issuer | Observed date | Change |
|---|
| Solstice Advanced Materials Inc. | Solstice Advanced Materials Inc. | 2026-01-31 | Removed / first absent |
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| Biogen Inc. | Biogen Inc. | 2026-01-31 | Removed / first absent |
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| Lululemon Athletica Inc. | Lululemon Athletica Inc. | 2026-01-31 | Removed / first absent |
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| CDW Corp. | CDW Corp. | 2026-01-31 | Removed / first absent |
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| ANSYS, Inc. | ANSYS, Inc. | 2025-07-31 | Removed / first absent |
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| MongoDB, Inc. | MongoDB, Inc. | 2025-07-31 | Removed / first absent |
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| Trade Desk, Inc. (The) | Trade Desk, Inc. (The) | 2026-01-31 | Removed / first absent |
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| AstraZeneca PLC | AstraZeneca PLC | 2026-01-31 | Removed / first absent |
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| ON Semiconductor Corp. | ON Semiconductor Corp. | 2026-01-31 | Removed / first absent |
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| Invesco Government & Agency Portfolio | Invesco Government & Agency Portfolio | 2025-04-30 | Removed / first absent |
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| GLOBALFOUNDRIES Inc. | GLOBALFOUNDRIES Inc. | 2026-01-31 | Removed / first absent |
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| Atlassian Corp. | Atlassian Corp. | 2026-04-30 | Removed / first absent |
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