AMUN 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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| KENTUCKY ST ECON DEV FIN AUTH | KENTUCKY ST ECON DEV FIN AUTH | 2026-04-30 | Added / first present |
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| CALIFORNIA ST MUNI FIN AUTH SOL WST DISP REVENUE | CALIFORNIA ST MUNI FIN AUTH SOL WST DISP REVENUE | 2026-04-30 | Added / first present |
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| JP MORGAN CHASE PUTTERS/DRIVERS TRUST VARIOUS STATES | JP MORGAN CHASE PUTTERS/DRIVERS TRUST VARIOUS STATES | 2026-04-30 | Added / first present |
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| PENNSYLVANIA ST ECON DEV FING AUTH SOLID WASTE DISPOSAL REV | PENNSYLVANIA ST ECON DEV FING AUTH SOLID WASTE DISPOSAL REV | 2026-04-30 | Added / first present |
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| MAIN STREET NATURAL GAS INC GA GAS SUPPLY REVENUE | MAIN STREET NATURAL GAS INC GA GAS SUPPLY REVENUE | 2026-04-30 | Added / first present |
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| INDIANA ST FIN AUTH HLTH SYS REVENUE | INDIANA ST FIN AUTH HLTH SYS REVENUE | 2026-04-30 | Added / first present |
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| PENNSYLVANIA ST ECON DEV FING AUTH SOLID WASTE DISPOSAL REV | PENNSYLVANIA ST ECON DEV FING AUTH SOLID WASTE DISPOSAL REV | 2026-04-30 | Added / first present |
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| MOBILE AL INDL DEV BRD SOL WST DISP REVENUE | MOBILE AL INDL DEV BRD SOL WST DISP REVENUE | 2026-04-30 | Added / first present |
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| CALIFORNIA ST MUNI FIN AUTH SOL WST DISP REVENUE | CALIFORNIA ST MUNI FIN AUTH SOL WST DISP REVENUE | 2026-04-30 | Added / first present |
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| PENNSYLVANIA ST ECON DEV FING AUTH SOLID WASTE DISPOSAL REV | PENNSYLVANIA ST ECON DEV FING AUTH SOLID WASTE DISPOSAL REV | 2026-04-30 | Added / first present |
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| BURKE CNTY GA DEV AUTH POLL CONTROL REVENUE | BURKE CNTY GA DEV AUTH POLL CONTROL REVENUE | 2026-04-30 | Added / first present |
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| MISSISSIPPI BUSINESS FIN CORPMS SOL WST DISP FAC & WSTWTR F | MISSISSIPPI BUSINESS FIN CORPMS SOL WST DISP FAC & WSTWTR F | 2026-04-30 | Added / first present |
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| LOUISVILLE & JEFFERSON CNTY KY MET GOVT HLTH SYS REVENUE | LOUISVILLE & JEFFERSON CNTY KY MET GOVT HLTH SYS REVENUE | 2026-04-30 | Added / first present |
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| PORT OF PORT ARTHUR TX NAV DIST | PORT OF PORT ARTHUR TX NAV DIST | 2026-04-30 | Added / first present |
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| LANSING MI SCH DIST | LANSING MI SCH DIST | 2026-04-30 | Added / first present |
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| POUGHKEEPSIE CITY NY | POUGHKEEPSIE CITY NY | 2026-04-30 | Added / first present |
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| FLORIDA INSURANCE ASSISTANCE INTERLOCAL AGY | FLORIDA INSURANCE ASSISTANCE INTERLOCAL AGY | 2026-04-30 | Added / first present |
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| MINNESOTA MUNI GAS AGY GAS PROJ REVENUE | MINNESOTA MUNI GAS AGY GAS PROJ REVENUE | 2026-04-30 | Added / first present |
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| BLACK BELT ENERGY GAS DIST AL GAS PROJECT REVENUE | BLACK BELT ENERGY GAS DIST AL GAS PROJECT REVENUE | 2026-04-30 | Added / first present |
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| CALIFORNIA ST MUNI FIN AUTH SOL WST DISP REVENUE | CALIFORNIA ST MUNI FIN AUTH SOL WST DISP REVENUE | 2026-04-30 | Added / first present |
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| TEXAS ST MUNI GAS ACQUISITION & SPLY CORP V GAS SPLY REVENUE | TEXAS ST MUNI GAS ACQUISITION & SPLY CORP V GAS SPLY REVENUE | 2026-04-30 | Added / first present |
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| LOUISVILLE & JEFFERSON CNTY KY REGL ARPT AUTH | LOUISVILLE & JEFFERSON CNTY KY REGL ARPT AUTH | 2026-04-30 | Added / first present |
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| MISSISSIPPI ST BUSINESS FIN CORP | MISSISSIPPI ST BUSINESS FIN CORP | 2026-04-30 | Added / first present |
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| GUTHRIE CNTY HOSP IA HOSP REVENUE | GUTHRIE CNTY HOSP IA HOSP REVENUE | 2026-04-30 | Added / first present |
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| MINNESOTA MUNI GAS AGY GAS PROJ REVENUE | MINNESOTA MUNI GAS AGY GAS PROJ REVENUE | 2026-04-30 | Added / first present |
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Removals
| Ticker | Issuer | Observed date | Change |
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| PORT OF PORT ARTHUR TX NAV DIST | PORT OF PORT ARTHUR TX NAV DIST | 2026-04-30 | Removed / first absent |
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| KENTUCKY ST PUBLIC ENERGY AUTH GAS SPLY REVENUE | KENTUCKY ST PUBLIC ENERGY AUTH GAS SPLY REVENUE | 2026-04-30 | Removed / first absent |
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| NEW YORK NY | NEW YORK NY | 2026-04-30 | Removed / first absent |
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| UNIV HOSPS & CLINICS AUTH WI | UNIV HOSPS & CLINICS AUTH WI | 2026-04-30 | Removed / first absent |
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| DISTRICT OF COLUMBIA REVENUE | DISTRICT OF COLUMBIA REVENUE | 2026-04-30 | Removed / first absent |
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| PENNSYLVANIA ST ECON DEV FING AUTH SOLID WASTE DISPOSAL REV | PENNSYLVANIA ST ECON DEV FING AUTH SOLID WASTE DISPOSAL REV | 2026-04-30 | Removed / first absent |
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| SOUTH CAROLINA JOBS-ECON DEV AUTH ENVRNMNTL IMPT REVENUE | SOUTH CAROLINA JOBS-ECON DEV AUTH ENVRNMNTL IMPT REVENUE | 2026-04-30 | Removed / first absent |
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| PENNSYLVANIA ST ECON DEV FING AUTH SOLID WASTE DISPOSAL REV | PENNSYLVANIA ST ECON DEV FING AUTH SOLID WASTE DISPOSAL REV | 2026-04-30 | Removed / first absent |
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| HEARD CNTY GA DEV AUTH | HEARD CNTY GA DEV AUTH | 2026-04-30 | Removed / first absent |
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| WALKER CNTY AL ECON & INDL DEV AUTH SOL WST DISP REVENUE | WALKER CNTY AL ECON & INDL DEV AUTH SOL WST DISP REVENUE | 2026-04-30 | Removed / first absent |
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| FLOYD CNTY GA DEV AUTH | FLOYD CNTY GA DEV AUTH | 2026-04-30 | Removed / first absent |
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| MET TRANSPRTN AUTH NY REVENUE | MET TRANSPRTN AUTH NY REVENUE | 2026-04-30 | Removed / first absent |
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| MASSACHUSETTS ST DEV FIN AGY REVENUE | MASSACHUSETTS ST DEV FIN AGY REVENUE | 2026-04-30 | Removed / first absent |
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| SAN ANTONIO TX WTR REVENUE | SAN ANTONIO TX WTR REVENUE | 2026-04-30 | Removed / first absent |
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