IROC 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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| Tuscarawas (County of), OH Economic Development and Finance Alliance (Ashland University) | Tuscarawas (County of), OH Economic Development and Finance Alliance (Ashland University) | 2026-04-30 | Added / first present |
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| Clackamas (County of), OR Hospital Facility Authority (Rose Villa) | Clackamas (County of), OR Hospital Facility Authority (Rose Villa) | 2026-04-30 | Added / first present |
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| Illinois Finance Authority | Illinois Finance Authority | 2026-04-30 | Added / first present |
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| Greater Orlando Aviation Authority | Greater Orlando Aviation Authority | 2026-04-30 | Added / first present |
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| Public Finance Authority | Public Finance Authority | 2026-04-30 | Added / first present |
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| New Hampshire Business Finance Authority | New Hampshire Business Finance Authority | 2026-04-30 | Added / first present |
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| Wisconsin Health & Educational Facilities Authority | Wisconsin Health & Educational Facilities Authority | 2026-04-30 | Added / first present |
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| Westchester County Local Development Corp. | Westchester County Local Development Corp. | 2026-04-30 | Added / first present |
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| Capital Trust Authority | Capital Trust Authority | 2026-04-30 | Added / first present |
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| Downtown Daybreak Public Infrastructure District No 1 | Downtown Daybreak Public Infrastructure District No 1 | 2026-04-30 | Added / first present |
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| County of Mobile AL | County of Mobile AL | 2026-04-30 | Added / first present |
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| New Hampshire Business Finance Authority | New Hampshire Business Finance Authority | 2026-04-30 | Added / first present |
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Removals
| Ticker | Issuer | Observed date | Change |
|---|
| New York (City of), NY Transitional Finance Authority | New York (City of), NY Transitional Finance Authority | 2026-04-30 | Removed / first absent |
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| Whiting (City of), IN (BP Products North America, Inc.) | Whiting (City of), IN (BP Products North America, Inc.) | 2026-04-30 | Removed / first absent |
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| Delaware State Economic Development Authority | Delaware State Economic Development Authority | 2026-04-30 | Removed / first absent |
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| Greater Orlando Aviation Authority | Greater Orlando Aviation Authority | 2026-04-30 | Removed / first absent |
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