SEPZ 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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| The Options Clearing Corp | The Options Clearing Corp | 2025-12-31 | Added / first present |
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| SALXX | STATE STREET INSTITUTIONAL US | 2025-12-31 | Added / first present |
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| 4SPY 250829C00563680 | THE OPTIONS CLEARING CORPORATION | 2024-09-30 | Added / first present |
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| 4SPY 250829P00507310 | THE OPTIONS CLEARING CORPORATION | 2024-09-30 | Added / first present |
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| 2SPY 240830C00450350 | THE OPTIONS CLEARING CORPORATION | 2023-09-30 | Added / first present |
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| 2SPY 240830P00405320 | THE OPTIONS CLEARING CORPORATION | 2023-09-30 | Added / first present |
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| 2SPY 230831C00395070 | THE OPTIONS CLEARING CORPORATION | 2022-09-30 | Added / first present |
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| 2SPY 230831P00355560 | THE OPTIONS CLEARING CORPORATION | 2022-09-30 | Added / first present |
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| 2SPY 220831C00451800 | THE OPTIONS CLEARING CORPORATION | 2021-09-30 | Added / first present |
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| 2SPY 220831P00406620 | THE OPTIONS CLEARING CORPORATION | 2021-09-30 | Added / first present |
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| B | United States Treasury Bills | 2021-09-30 | Added / first present |
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| TREASURY BILL | TREASURY BILL | 2021-03-31 | Added / first present |
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Removals
| Ticker | Issuer | Observed date | Change |
|---|
| 4SPY 250829C00563680 | THE OPTIONS CLEARING CORPORATION | 2025-12-31 | Removed / first absent |
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| 4SPY 250829P00507310 | THE OPTIONS CLEARING CORPORATION | 2025-12-31 | Removed / first absent |
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| 2SPY 240830C00450350 | THE OPTIONS CLEARING CORPORATION | 2024-09-30 | Removed / first absent |
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| 2SPY 240830P00405320 | THE OPTIONS CLEARING CORPORATION | 2024-09-30 | Removed / first absent |
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| 2SPY 230831C00395070 | THE OPTIONS CLEARING CORPORATION | 2023-09-30 | Removed / first absent |
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| 2SPY 230831P00355560 | THE OPTIONS CLEARING CORPORATION | 2023-09-30 | Removed / first absent |
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| 2SPY 220831C00451800 | THE OPTIONS CLEARING CORPORATION | 2022-09-30 | Removed / first absent |
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| 2SPY 220831P00406620 | THE OPTIONS CLEARING CORPORATION | 2022-09-30 | Removed / first absent |
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| TREASURY BILL | TREASURY BILL | 2021-09-30 | Removed / first absent |
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| N/A | N/A | 2021-09-30 | Removed / first absent |
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| FXFXX | First American Treasury Obliga | 2025-12-31 | Removed / first absent |
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| TREASURY BILL | TREASURY BILL | 2021-03-31 | Removed / first absent |
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