YSPY 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 |
|---|
| Treasury Bill | Treasury Bill | 2026-03-31 | Added / first present |
|---|
| Treasury Bill | Treasury Bill | 2026-03-31 | Added / first present |
|---|
| Treasury Bill | Treasury Bill | 2026-03-31 | Added / first present |
|---|
| SP15915P | The Options Clearing Corporation | 2026-03-31 | Added / first present |
|---|
| SP17729P | The Options Clearing Corporation | 2026-03-31 | Added / first present |
|---|
| SP17205P | The Options Clearing Corporation | 2026-03-31 | Added / first present |
|---|
| SP19166P | The Options Clearing Corporation | 2026-03-31 | Added / first present |
|---|
| Treasury Bill | Treasury Bill | 2025-12-31 | Added / first present |
|---|
| Treasury Bill | Treasury Bill | 2025-12-31 | Added / first present |
|---|
| SP20621P | The Options Clearing Corporation | 2025-12-31 | Added / first present |
|---|
| SP22912P | The Options Clearing Corporation | 2025-12-31 | Added / first present |
|---|
| Treasury Bill | Treasury Bill | 2025-09-30 | Added / first present |
|---|
| Treasury Bill | Treasury Bill | 2025-09-30 | Added / first present |
|---|
| Treasury Bill | Treasury Bill | 2025-09-30 | Added / first present |
|---|
| SP18719P | The Options Clearing Corporation | 2025-09-30 | Added / first present |
|---|
| SP18410P | The Options Clearing Corporation | 2025-09-30 | Added / first present |
|---|
| SP20456P | The Options Clearing Corporation | 2025-09-30 | Added / first present |
|---|
| SP20799P | The Options Clearing Corporation | 2025-09-30 | Added / first present |
|---|
Removals
| Ticker | Issuer | Observed date | Change |
|---|
| Treasury Bill | Treasury Bill | 2026-03-31 | Removed / first absent |
|---|
| Treasury Bill | Treasury Bill | 2026-03-31 | Removed / first absent |
|---|
| SP20621P | The Options Clearing Corporation | 2026-03-31 | Removed / first absent |
|---|
| SP22912P | The Options Clearing Corporation | 2026-03-31 | Removed / first absent |
|---|
| Treasury Bill | Treasury Bill | 2025-12-31 | Removed / first absent |
|---|
| Treasury Bill | Treasury Bill | 2025-12-31 | Removed / first absent |
|---|
| Treasury Bill | Treasury Bill | 2025-12-31 | Removed / first absent |
|---|
| SP18719P | The Options Clearing Corporation | 2025-12-31 | Removed / first absent |
|---|
| SP18410P | The Options Clearing Corporation | 2025-12-31 | Removed / first absent |
|---|
| SP20456P | The Options Clearing Corporation | 2025-12-31 | Removed / first absent |
|---|
| SP20799P | The Options Clearing Corporation | 2025-12-31 | Removed / first absent |
|---|
| Treasury Bill | Treasury Bill | 2025-09-30 | Removed / first absent |
|---|
| SP15384P | The Options Clearing Corporation | 2025-09-30 | Removed / first absent |
|---|
| SP17093P | The Options Clearing Corporation | 2025-09-30 | Removed / first absent |
|---|