OPER 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 | 2023-05-31 | Added / first present |
Removals
| Ticker | Issuer | Observed date | Change |
|---|---|---|---|
| TREASURY BILL | TREASURY BILL | 2023-08-31 | Removed / first absent |