f/overrides/event-backup/lutax-dividend.csv
Greg Pomerantz bb8e39605e Event-history protection: backup dir, empty-download fallback, docs
Yahoo's 2026 event-feed change (capitalGain events dropped for some
funds; no events at all for terminated tickers) can wipe good event
history on re-download. Defense in depth:

- overrides/event-backup/: last-known-good copy of every dividend/
  capitalGain file (8,192 files, 58 MB); refresh with
  scripts/backup_events.py after each dump update
- data.py event_file(): frozen > data-root (while populated) > backup;
  used by panel reads, verify_official, and the double-listing scanner
- README: capital-gain files are mutual-fund-only in this dump; Yahoo
  has no LT/ST split (tax.py taxes capg at lt_rate; the per-fund split
  would come from fund-company annual tax statements or commercial feeds)
- tests: exact Timestamp .loc keys (pandas 3.x string matching returns a
  Series on large DatetimeIndex)
2026-08-31 21:59:25 -04:00

5.6 KiB

1DateDividends
22013-04-300.011000
32014-01-310.012000
42020-05-290.015000
52021-01-290.011000
62022-05-310.012000
72005-02-280.031000
82013-11-290.012000
92014-08-290.012000
102008-04-300.037000
112009-03-310.031000
122016-07-290.012000
132022-10-310.015000
142006-04-280.037000
152015-06-300.012000
162003-09-300.041000
172007-11-300.039000
182004-02-270.033000
192008-11-280.034000
202019-11-290.017000
212021-08-310.010000
222011-02-280.021000
232011-10-310.015000
242019-02-280.017000
252025-12-310.030000
262026-01-300.030000
272011-08-310.016000
282010-12-020.258000
292013-01-310.011000
302018-05-310.016000
312020-02-280.016000
322020-07-310.014000
332023-02-280.017000
342010-06-180.014000
352008-01-310.041000
362010-08-310.023000
372021-05-280.010000
382022-06-300.011000
392003-10-310.042000
402010-09-300.022000
412017-04-280.012000
422017-11-300.013000
432021-04-300.011000
442004-11-300.033000
452009-08-310.028000
462011-09-300.015000
472005-04-290.033000
482012-08-310.011000
492014-09-300.013000
502017-07-310.013000
512019-06-280.018000
522020-04-300.016000
532020-09-300.012000
542021-11-300.010000
552007-04-300.038000
562025-03-310.029000
572016-03-310.012000
582016-04-290.012000
592019-09-300.018000
602012-07-310.011000
612004-07-300.034000
622004-10-290.033000
632009-12-020.017000
642013-05-310.011000
652016-02-290.012000
662023-01-310.018000
672025-10-310.030000
682003-06-300.043000
692020-03-310.017000
702024-11-290.027000
712025-06-300.028000
722007-10-310.040000
732022-01-310.010000
742024-03-280.026000
752026-06-300.030000
762011-07-290.017000
772004-05-280.035000
782009-09-300.027000
792015-10-300.012000
802016-09-300.011000
812016-10-310.012000
822018-11-300.017000
832004-01-300.034000
842008-07-310.036000
852012-09-280.010000
862017-08-310.013000
872023-11-300.023000
882007-01-310.039000
892018-12-310.018000
902019-03-290.019000
912019-04-300.019000
922021-12-310.010000
932018-04-300.016000
942015-01-300.013000
952017-05-310.013000
962022-07-290.012000
972022-09-300.013000
982024-02-290.024000
992024-05-310.027000
1002009-02-270.030000
1012025-11-280.029000
1022009-11-300.026000
1032013-09-300.011000
1042013-12-310.023000
1052010-05-280.024000
1062009-10-300.028000
1072009-12-310.026000
1082014-12-020.009000
1092026-03-310.030000
1102005-11-300.035000
1112016-05-310.012000
1122012-10-310.010000
1132016-06-300.011000
1142004-08-310.034000
1152007-09-280.038000
1162010-07-300.023000
1172010-10-290.023000
1182016-11-300.044000
1192021-09-300.009000
1202024-12-310.028000
1212006-06-300.037000
1222008-08-290.035000
1232012-06-290.208000
1242014-10-310.013000
1252017-12-290.014000
1262006-03-310.038000
1272010-11-300.022000
1282013-07-310.011000
1292014-05-300.011000
1302023-03-310.020000
1312024-09-300.027000
1322006-10-310.038000
1332018-01-310.014000
1342010-01-290.025000
1352013-10-310.012000
1362003-08-290.043000
1372006-11-300.037000
1382011-12-300.024000
1392025-04-300.028000
1402004-03-310.036000
1412007-03-300.039000
1422011-01-310.022000
1432011-05-310.017000
1442014-12-310.014000
1452020-11-300.012000
1462003-05-300.044000
1472024-01-310.025000
1482013-08-300.011000
1492015-03-310.012000
1502023-12-290.025000
1512007-02-280.035000
1522017-03-310.013000
1532018-09-280.017000
1542019-07-310.018000
1552012-11-300.144000
1562022-03-310.011000
1572010-03-310.024000
1582013-03-280.011000
1592021-06-300.010000
1602023-08-310.022000
1612005-01-310.034000
1622020-12-010.069000
1632021-10-290.010000
1642025-05-300.029000
1652019-08-300.018000
1662005-10-310.035000
1672011-11-300.122000
1682012-02-290.012000
1692012-03-300.013000
1702013-02-280.010000
1712015-04-300.012000
1722005-08-310.035000
1732009-07-310.029000
1742011-04-290.017000
1752014-06-300.011000
1762014-07-310.012000
1772020-06-300.014000
1782022-02-280.009000
1792023-06-300.020000
1802008-09-300.034000
1812018-06-290.016000
1822021-12-020.023000
1832023-07-310.021000
1842004-06-300.034000
1852008-02-290.035000
1862009-05-290.030000
1872019-10-310.018000
1882025-02-280.026000
1892007-12-310.041000
1902017-09-290.013000
1912018-07-310.017000
1922018-08-310.017000
1932015-05-290.012000
1942007-08-310.039000
1952005-07-290.034000
1962010-02-260.022000
1972012-04-300.012000
1982015-02-270.011000
1992017-02-280.011000
2002009-04-300.029000
2012005-06-300.034000
2022011-06-300.041000
2032012-05-310.012000
2042021-02-260.010000
2052025-07-310.029000
2062004-04-300.035000
2072006-05-310.038000
2082015-08-310.012000
2092015-09-300.012000
2102018-03-290.016000
2112021-07-300.010000
2122022-04-290.011000
2132023-10-310.023000
2142006-01-310.037000
2152006-08-310.038000
2162003-07-310.044000
2172013-06-280.011000
2182019-05-310.019000
2192020-12-310.011000
2202026-05-290.031000
2212003-12-310.036000
2222008-06-300.035000
2232009-01-300.034000
2242013-12-030.121000
2252015-11-300.070000
2262023-09-290.022000
2272024-10-310.028000
2282003-11-280.040000
2292006-12-290.049000
2302008-05-300.037000
2312019-01-310.019000
2322020-08-310.013000
2332006-07-310.038000
2342019-12-310.018000
2352004-09-300.033000
2362015-07-310.012000
2372020-01-310.018000
2382024-08-300.028000
2392005-05-310.035000
2402006-02-280.034000
2412014-04-300.011000
2422015-12-310.016000
2432016-08-310.012000
2442017-06-300.013000
2452018-02-280.013000
2462021-03-310.011000
2472005-12-300.037000
2482023-05-310.020000
2492024-06-280.026000
2502026-07-310.031000
2512022-11-300.016000
2522007-07-310.039000
2532009-06-300.030000
2542010-06-300.023000
2552012-01-310.013000
2562005-03-310.034000
2572012-12-310.010000
2582008-12-310.034000
2592006-09-290.037000
2602011-03-310.023000
2612014-11-280.013000
2622016-01-290.013000
2632023-04-280.019000
2642025-08-290.030000
2652004-12-310.034000
2662014-03-310.011000
2672025-09-300.029000
2682026-02-270.027000
2692010-12-310.022000
2702017-01-310.012000
2712025-01-310.029000
2722003-04-300.039000
2732008-10-310.036000
2742016-12-300.012000
2752018-10-310.018000
2762020-10-300.012000
2772008-03-310.040000
2782022-08-310.013000
2792024-07-310.028000
2802007-06-290.038000
2812017-10-310.014000
2822005-09-300.034000
2832007-05-310.039000
2842014-02-280.011000
2852022-12-300.018000
2862024-04-300.025000
2872026-04-300.029000
2882003-03-310.037000