SPIN 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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| Boston Scientific Corp | Boston Scientific Corp | 2026-03-31 | Added / first present |
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| Waters Corp | Waters Corp | 2026-03-31 | Added / first present |
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| Freeport-McMoRan Inc | Freeport-McMoRan Inc | 2026-03-31 | Added / first present |
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| MasTec Inc | MasTec Inc | 2026-03-31 | Added / first present |
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| Lam Research Corp | Lam Research Corp | 2026-03-31 | Added / first present |
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| Micron Technology Inc | Micron Technology Inc | 2025-12-31 | Added / first present |
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| Regions Financial Corp | Regions Financial Corp | 2025-12-31 | Added / first present |
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| Dexcom Inc | Dexcom Inc | 2025-12-31 | Added / first present |
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| Robinhood Markets Inc | Robinhood Markets Inc | 2025-12-31 | Added / first present |
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| Intuitive Surgical Inc | Intuitive Surgical Inc | 2025-09-30 | Added / first present |
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| Agilent Technologies Inc | Agilent Technologies Inc | 2025-09-30 | Added / first present |
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| Procter & Gamble Co/The | Procter & Gamble Co/The | 2025-09-30 | Added / first present |
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| Westinghouse Air Brake Technologies Corp | Westinghouse Air Brake Technologies Corp | 2025-09-30 | Added / first present |
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| State Street Global Advisors | State Street Global Advisors | 2025-09-30 | Added / first present |
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| Repligen Corp | Repligen Corp | 2025-09-30 | Added / first present |
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| BJ's Wholesale Club Holdings Inc | BJ's Wholesale Club Holdings Inc | 2025-09-30 | Added / first present |
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Removals
| Ticker | Issuer | Observed date | Change |
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| UnitedHealth Group Inc | UnitedHealth Group Inc | 2026-03-31 | Removed / first absent |
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| Union Pacific Corp | Union Pacific Corp | 2025-09-30 | Removed / first absent |
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| Elevance Health Inc | Elevance Health Inc | 2025-12-31 | Removed / first absent |
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| Ross Stores Inc | Ross Stores Inc | 2025-12-31 | Removed / first absent |
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| MSCI Inc | MSCI Inc | 2025-12-31 | Removed / first absent |
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| Fidelity National Information Services Inc | Fidelity National Information Services Inc | 2025-09-30 | Removed / first absent |
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| Becton Dickinson & Co | Becton Dickinson & Co | 2026-03-31 | Removed / first absent |
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| Goldman Sachs Group Inc/The | Goldman Sachs Group Inc/The | 2026-03-31 | Removed / first absent |
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| ConocoPhillips | ConocoPhillips | 2026-03-31 | Removed / first absent |
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| IDEXX Laboratories Inc | IDEXX Laboratories Inc | 2025-09-30 | Removed / first absent |
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| BioMarin Pharmaceutical Inc | BioMarin Pharmaceutical Inc | 2025-12-31 | Removed / first absent |
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| IQVIA Holdings Inc | IQVIA Holdings Inc | 2025-12-31 | Removed / first absent |
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| AstraZeneca PLC | AstraZeneca PLC | 2026-03-31 | Removed / first absent |
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| Kenvue Inc | Kenvue Inc | 2025-09-30 | Removed / first absent |
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