HYBI 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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| United States Treasury Bill | United States Treasury Bill | 2026-03-31 | Added / first present |
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| SPXW 4 P5900 | N/A | 2026-03-31 | Added / first present |
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| SPXW 4 P5875 | N/A | 2026-03-31 | Added / first present |
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| SPXW 4 P5800 | N/A | 2026-03-31 | Added / first present |
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| SPXW 4 P6050 | N/A | 2026-03-31 | Added / first present |
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| SPXW 4 P6125 | N/A | 2026-03-31 | Added / first present |
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| SPXW 4 P6175 | N/A | 2026-03-31 | Added / first present |
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| SPXW 1 P6300 | N/A | 2025-12-31 | Added / first present |
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| SPXW 1 P6250 | N/A | 2025-12-31 | Added / first present |
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| SPXW 1 P6150 | N/A | 2025-12-31 | Added / first present |
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| SPXW 1 P6450 | N/A | 2025-12-31 | Added / first present |
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| SPXW 1 P6520 | N/A | 2025-12-31 | Added / first present |
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| SPXW 1 P6580 | N/A | 2025-12-31 | Added / first present |
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| SPXW 12 P6200 | N/A | 2025-11-30 | Added / first present |
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| SPXW 12 P6150 | N/A | 2025-11-30 | Added / first present |
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| SPXW 12 P6075 | N/A | 2025-11-30 | Added / first present |
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| SPXW 12 P6340 | N/A | 2025-11-30 | Added / first present |
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| SPXW 12 P6415 | N/A | 2025-11-30 | Added / first present |
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| SPXW 12 P6480 | N/A | 2025-11-30 | Added / first present |
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| SPXW 9 P5925 | N/A | 2025-08-31 | Added / first present |
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| SPXW 9 P5875 | N/A | 2025-08-31 | Added / first present |
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| SPXW 9 P5775 | N/A | 2025-08-31 | Added / first present |
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| SPXW 9 P6050 | N/A | 2025-08-31 | Added / first present |
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| SPXW 9 P6110 | N/A | 2025-08-31 | Added / first present |
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| SPXW 9 P6175 | N/A | 2025-08-31 | Added / first present |
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Removals
| Ticker | Issuer | Observed date | Change |
|---|
| SPXW 1 P6300 | N/A | 2026-03-31 | Removed / first absent |
|---|
| SPXW 1 P6250 | N/A | 2026-03-31 | Removed / first absent |
|---|
| SPXW 1 P6150 | N/A | 2026-03-31 | Removed / first absent |
|---|
| SPXW 1 P6450 | N/A | 2026-03-31 | Removed / first absent |
|---|
| SPXW 1 P6520 | N/A | 2026-03-31 | Removed / first absent |
|---|
| SPXW 1 P6580 | N/A | 2026-03-31 | Removed / first absent |
|---|
| SPXW 12 P6200 | N/A | 2025-12-31 | Removed / first absent |
|---|
| SPXW 12 P6150 | N/A | 2025-12-31 | Removed / first absent |
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| SPXW 12 P6075 | N/A | 2025-12-31 | Removed / first absent |
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| SPXW 12 P6340 | N/A | 2025-12-31 | Removed / first absent |
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| SPXW 12 P6415 | N/A | 2025-12-31 | Removed / first absent |
|---|
| SPXW 12 P6480 | N/A | 2025-12-31 | Removed / first absent |
|---|
| SPXW 9 P5925 | N/A | 2025-11-30 | Removed / first absent |
|---|
| SPXW 9 P5875 | N/A | 2025-11-30 | Removed / first absent |
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| SPXW 9 P5775 | N/A | 2025-11-30 | Removed / first absent |
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| SPXW 9 P6050 | N/A | 2025-11-30 | Removed / first absent |
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| SPXW 9 P6110 | N/A | 2025-11-30 | Removed / first absent |
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| SPXW 9 P6175 | N/A | 2025-11-30 | Removed / first absent |
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| HYLB | Xtrackers USD High Yield Corpo | 2026-03-31 | Removed / first absent |
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| USHY | iShares Broad USD High Yield C | 2026-03-31 | Removed / first absent |
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| SPHY | SPDR Portfolio High Yield Bond | 2026-03-31 | Removed / first absent |
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| United States Treasury Bill | United States Treasury Bill | 2025-08-31 | Removed / first absent |
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| SPXW 6 P5375 | N/A | 2025-08-31 | Removed / first absent |
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| SPXW 6 P5325 | N/A | 2025-08-31 | Removed / first absent |
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| SPXW 6 P5250 | N/A | 2025-08-31 | Removed / first absent |
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| SPXW 6 P5500 | N/A | 2025-08-31 | Removed / first absent |
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| SPXW 6 P5550 | N/A | 2025-08-31 | Removed / first absent |
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| SPXW 6 P5600 | N/A | 2025-08-31 | Removed / first absent |
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