DECZ 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 251128C00602550 | THE OPTIONS CLEARING CORPORATION | 2024-12-31 | Added / first present |
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| 4SPY 251128P00542300 | THE OPTIONS CLEARING CORPORATION | 2024-12-31 | Added / first present |
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| FXFXX | First American Funds Inc. | 2024-03-31 | Added / first present |
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| 2SPY 241129C00456400 | THE OPTIONS CLEARING CORPORATION | 2023-12-31 | Added / first present |
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| 2SPY 241129P00410760 | THE OPTIONS CLEARING CORPORATION | 2023-12-31 | Added / first present |
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| 2SPY 231130C00407680 | THE OPTIONS CLEARING CORPORATION | 2022-12-31 | Added / first present |
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| 2SPY 231130P00366910 | THE OPTIONS CLEARING CORPORATION | 2022-12-31 | Added / first present |
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| FXFXX | FIRST AMERN FDS INC | 2022-03-31 | Added / first present |
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| 2SPY 221130C00450500 | THE OPTIONS CLEARING CORPORATION | 2021-12-31 | Added / first present |
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| 2SPY 221130P00405450 | THE OPTIONS CLEARING CORPORATION | 2021-12-31 | Added / first present |
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| 2SPY 211130C00365840 | THE OPTIONS CLEARING CORPORATION | 2021-09-30 | Added / first present |
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| 2SPY 211130P00329250 | 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 | 2021-06-30 | Added / first present |
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Removals
| Ticker | Issuer | Observed date | Change |
|---|
| 4SPY 251128C00602550 | THE OPTIONS CLEARING CORPORATION | 2025-12-31 | Removed / first absent |
|---|
| 4SPY 251128P00542300 | THE OPTIONS CLEARING CORPORATION | 2025-12-31 | Removed / first absent |
|---|
| FXFXX | First American Funds Inc. | 2025-12-31 | Removed / first absent |
|---|
| 2SPY 241129C00456400 | THE OPTIONS CLEARING CORPORATION | 2024-12-31 | Removed / first absent |
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| 2SPY 241129P00410760 | THE OPTIONS CLEARING CORPORATION | 2024-12-31 | Removed / first absent |
|---|
| 2SPY 231130C00407680 | THE OPTIONS CLEARING CORPORATION | 2023-12-31 | Removed / first absent |
|---|
| 2SPY 231130P00366910 | THE OPTIONS CLEARING CORPORATION | 2023-12-31 | Removed / first absent |
|---|
| FXFXX | FIRST AMERN FDS INC | 2023-12-31 | Removed / first absent |
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| 2SPY 221130C00450500 | THE OPTIONS CLEARING CORPORATION | 2022-12-31 | Removed / first absent |
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| 2SPY 221130P00405450 | THE OPTIONS CLEARING CORPORATION | 2022-12-31 | Removed / first absent |
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| 2SPY 211130C00365840 | THE OPTIONS CLEARING CORPORATION | 2021-12-31 | Removed / first absent |
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| 2SPY 211130P00329250 | THE OPTIONS CLEARING CORPORATION | 2021-12-31 | 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 | 2021-12-31 | Removed / first absent |
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| TREASURY BILL | TREASURY BILL | 2021-06-30 | Removed / first absent |
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