OCTZ 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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| FXFXX | First American Funds Inc. | 2025-03-31 | Added / first present |
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| 4SPY 250930C00573760 | THE OPTIONS CLEARING CORPORATION | 2024-12-31 | Added / first present |
|---|
| 4SPY 250930P00516380 | THE OPTIONS CLEARING CORPORATION | 2024-12-31 | Added / first present |
|---|
| 2SPY 240930C00427480 | THE OPTIONS CLEARING CORPORATION | 2023-12-31 | Added / first present |
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| 2SPY 240930P00384730 | THE OPTIONS CLEARING CORPORATION | 2023-12-31 | Added / first present |
|---|
| 2SPY 230929C00357180 | THE OPTIONS CLEARING CORPORATION | 2022-12-31 | Added / first present |
|---|
| 2SPY 230929P00321460 | THE OPTIONS CLEARING CORPORATION | 2022-12-31 | Added / first present |
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| B | United States Treasury Bills | 2022-06-30 | Added / first present |
|---|
| 2SPY 220930C00434240 | THE OPTIONS CLEARING CORPORATION | 2021-12-31 | Added / first present |
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| 2SPY 220930P00390820 | THE OPTIONS CLEARING CORPORATION | 2021-12-31 | Added / first present |
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| 2SPY 210930C00336970 | THE OPTIONS CLEARING CORPORATION | 2021-09-30 | Added / first present |
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| 2SPY 210930P00303280 | 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 |
|---|
| FXFXX | First American Funds Inc. | 2025-12-31 | Removed / first absent |
|---|
| 4SPY 250930C00573760 | THE OPTIONS CLEARING CORPORATION | 2025-12-31 | Removed / first absent |
|---|
| 4SPY 250930P00516380 | THE OPTIONS CLEARING CORPORATION | 2025-12-31 | Removed / first absent |
|---|
| 2SPY 240930C00427480 | THE OPTIONS CLEARING CORPORATION | 2024-12-31 | Removed / first absent |
|---|
| 2SPY 240930P00384730 | THE OPTIONS CLEARING CORPORATION | 2024-12-31 | Removed / first absent |
|---|
| 2SPY 230929C00357180 | THE OPTIONS CLEARING CORPORATION | 2023-12-31 | Removed / first absent |
|---|
| 2SPY 230929P00321460 | THE OPTIONS CLEARING CORPORATION | 2023-12-31 | Removed / first absent |
|---|
| 2SPY 220930C00434240 | THE OPTIONS CLEARING CORPORATION | 2022-12-31 | Removed / first absent |
|---|
| 2SPY 220930P00390820 | THE OPTIONS CLEARING CORPORATION | 2022-12-31 | Removed / first absent |
|---|
| 2SPY 210930C00336970 | THE OPTIONS CLEARING CORPORATION | 2021-12-31 | Removed / first absent |
|---|
| 2SPY 210930P00303280 | THE OPTIONS CLEARING CORPORATION | 2021-12-31 | Removed / first absent |
|---|
| B | United States Treasury Bills | 2022-03-31 | Removed / first absent |
|---|
| 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 | 2024-12-31 | Removed / first absent |
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| TREASURY BILL | TREASURY BILL | 2021-03-31 | Removed / first absent |
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