WTMU 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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| MASSACHUSETTS ST | MASSACHUSETTS ST | 2026-02-28 | Added / first present |
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| DENVER (CO), CITY AND COUNTY OF | DENVER (CO), CITY AND COUNTY OF | 2026-02-28 | Added / first present |
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| INDIANA ST FIN AUTH | INDIANA ST FIN AUTH | 2026-02-28 | Added / first present |
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| DALLAS-FORT WORTH TEX INTL ARPT | DALLAS-FORT WORTH TEX INTL ARPT | 2026-02-28 | Added / first present |
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| SALT LAKE CITY (UT), CITY OF | SALT LAKE CITY (UT), CITY OF | 2026-02-28 | Added / first present |
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| UNIVERSITY CONN | UNIVERSITY CONN | 2026-02-28 | Added / first present |
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| NEW YORK N Y | NEW YORK N Y | 2026-02-28 | Added / first present |
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| PORT AUTH N Y & N J | PORT AUTH N Y & N J | 2026-02-28 | Added / first present |
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| CHICAGO (IL), CITY OF | CHICAGO (IL), CITY OF | 2026-02-28 | Added / first present |
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| DURHAM CNTY N C | DURHAM CNTY N C | 2026-02-28 | Added / first present |
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| PORT OF PORTLAND THE (OR) | PORT OF PORTLAND THE (OR) | 2026-02-28 | Added / first present |
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| SOUTH DAKOTA ST HEALTH & EDL FACS AUTH | SOUTH DAKOTA ST HEALTH & EDL FACS AUTH | 2026-02-28 | Added / first present |
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| NEW YORK CITY TRANSITIONAL FINANCE AUTHORITY (THE) (NY) | NEW YORK CITY TRANSITIONAL FINANCE AUTHORITY (THE) (NY) | 2026-02-28 | Added / first present |
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| NEW YORK N Y CITY TRANSITIONAL FIN AUTH | NEW YORK N Y CITY TRANSITIONAL FIN AUTH | 2026-02-28 | Added / first present |
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| NORTHAMPTON CNTY PA GEN PURP AUTH | NORTHAMPTON CNTY PA GEN PURP AUTH | 2026-02-28 | Added / first present |
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| MIDLAND TEX INDPT SCH DIST | MIDLAND TEX INDPT SCH DIST | 2026-02-28 | Added / first present |
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| NASH HEALTH CARE SYS NORTH CAROLINA | NASH HEALTH CARE SYS NORTH CAROLINA | 2026-02-28 | Added / first present |
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| TENNESSEE ENERGY ACQUISITION CORP | TENNESSEE ENERGY ACQUISITION CORP | 2026-02-28 | Added / first present |
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| CHICAGO ILL MIDWAY ARPT | CHICAGO ILL MIDWAY ARPT | 2026-02-28 | Added / first present |
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| METROPOLITAN NASHVILLE ARPT AUTH TENN | METROPOLITAN NASHVILLE ARPT AUTH TENN | 2026-02-28 | Added / first present |
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| KENTUCKY INC KY PUB ENERGY AUTH | KENTUCKY INC KY PUB ENERGY AUTH | 2026-02-28 | Added / first present |
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| METROPOLITAN NASHVILLE ARPT AUTH TENN | METROPOLITAN NASHVILLE ARPT AUTH TENN | 2026-02-28 | Added / first present |
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| BLACK BELT ENERGY GAS DIST ALA | BLACK BELT ENERGY GAS DIST ALA | 2026-02-28 | Added / first present |
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| TEXAS PUB FIN AUTH | TEXAS PUB FIN AUTH | 2026-02-28 | Added / first present |
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| METROPOLITAN WASHINGTON AIRPORTS AUTHORITY (DC) | METROPOLITAN WASHINGTON AIRPORTS AUTHORITY (DC) | 2026-02-28 | Added / first present |
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| MASSACHUSETTS ST PORT AUTH | MASSACHUSETTS ST PORT AUTH | 2026-02-28 | Added / first present |
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| GRANT COUNTY PUBLIC UTILITY DISTRICT N.2 (WA) | GRANT COUNTY PUBLIC UTILITY DISTRICT N.2 (WA) | 2026-02-28 | Added / first present |
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| NEW YORK ST DORM AUTH | NEW YORK ST DORM AUTH | 2026-02-28 | Added / first present |
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| DENVER COLO CITY & CNTY SCH DIST NO 1 | DENVER COLO CITY & CNTY SCH DIST NO 1 | 2026-02-28 | Added / first present |
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| WACO TEX EDL FIN CORP | WACO TEX EDL FIN CORP | 2026-02-28 | Added / first present |
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| MARICOPA CNTY ARIZ SCH DIST NO 4 MESA UNI | MARICOPA CNTY ARIZ SCH DIST NO 4 MESA UNI | 2026-02-28 | Added / first present |
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| CONNECTICUT ST HEALTH & EDL FACS AUTH | CONNECTICUT ST HEALTH & EDL FACS AUTH | 2026-02-28 | Added / first present |
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| LOWER COLO RIV AUTH TEX | LOWER COLO RIV AUTH TEX | 2026-02-28 | Added / first present |
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| MIAMI BEACH FLA REDEV AGY | MIAMI BEACH FLA REDEV AGY | 2026-02-28 | Added / first present |
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| PUBLIC FIN AUTH WIS | PUBLIC FIN AUTH WIS | 2026-02-28 | Added / first present |
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Removals
| Ticker | Issuer | Observed date | Change |
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| DALLAS TX | DALLAS TX | 2026-02-28 | Removed / first absent |
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| STHRN MINNESOTA ST MUNI PWR AG | STHRN MINNESOTA ST MUNI PWR AG | 2026-02-28 | Removed / first absent |
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