f/overrides/event-backup/notax-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

6.5 KiB

1DateDividends
22013-09-300.049000
32015-02-270.043000
42024-01-310.036000
52025-09-300.039000
62002-12-310.059000
72004-10-250.058000
82010-06-300.051000
92019-11-220.031000
102001-06-220.056000
112003-06-240.053000
122020-04-300.036000
132025-03-120.022000
142018-10-310.037000
152002-06-280.056000
162006-01-250.054000
172016-04-250.043000
182018-08-270.038000
192015-07-270.050000
202023-03-310.033000
212024-02-290.037000
222000-08-310.058000
232001-04-300.058000
242004-01-260.047000
252014-10-310.046000
262026-05-290.041000
272008-05-270.052000
282011-02-280.051000
292024-06-280.036000
302026-01-300.040000
312015-01-260.046000
322017-05-240.036000
332019-05-240.038000
342002-09-300.056000
352015-08-250.043000
362019-08-260.036000
372014-08-290.046000
382021-06-300.036000
392022-09-300.034000
402022-11-300.034000
412026-04-300.041000
422001-03-300.060000
432003-11-210.047000
442011-03-310.052000
452021-04-300.035000
462011-01-310.052000
472025-02-280.039000
482015-12-030.007000
492021-07-300.035000
502006-10-250.048000
512009-10-260.054000
522015-05-220.040000
532015-09-240.045000
542007-08-270.050000
552011-07-290.051000
562020-12-030.005000
572011-12-300.050000
582013-02-280.045000
592014-04-300.049000
602018-10-250.037000
612001-08-310.058000
622004-06-250.058000
632006-08-250.049000
642006-09-250.051000
652004-04-260.058000
662016-12-270.039000
672018-12-310.008000
682025-03-310.038000
692014-12-240.045000
702017-04-240.035000
712020-07-310.035000
722021-01-290.035000
732000-06-300.055000
742005-03-240.052000
752007-03-260.051000
762014-09-300.046000
772026-07-310.040000
782018-03-230.035000
792018-05-240.035000
802018-12-060.033000
812023-08-310.034000
822006-03-270.055000
832007-11-260.051000
842011-05-310.053000
852015-11-230.043000
862023-01-310.032000
872023-04-280.034000
882008-10-270.055000
892009-02-230.053000
902010-11-300.051000
912021-11-300.033000
922010-05-280.050000
932011-11-300.050000
942014-11-210.041000
952024-10-310.037000
962001-01-310.060000
972004-02-260.056000
982004-11-230.053000
992010-01-290.050000
1002025-05-300.039000
1012025-11-280.039000
1022024-08-300.037000
1032001-09-280.056000
1042010-10-290.049000
1052013-06-280.048000
1062024-05-310.036000
1072011-09-300.052000
1082013-11-290.050000
1092012-09-280.046000
1102015-02-230.043000
1112015-06-240.047000
1122002-01-310.059000
1132005-01-250.050000
1142008-04-240.052000
1152011-08-310.051000
1162015-04-240.049000
1172018-01-250.036000
1182022-05-310.033000
1192001-11-300.056000
1202004-07-260.054000
1212005-02-220.053000
1222012-01-310.049000
1232001-12-310.058000
1242006-12-220.044000
1252017-12-260.035000
1262026-06-300.039000
1272020-06-300.035000
1282023-11-300.036000
1292006-02-220.052000
1302015-03-250.044000
1312015-10-260.048000
1322018-04-240.036000
1332022-03-310.031000
1342022-04-290.032000
1352025-08-290.039000
1362006-04-240.047000
1372010-03-310.050000
1382014-02-280.051000
1392017-07-250.034000
1402024-12-310.037000
1412025-01-310.038000
1422000-10-310.057000
1432006-06-260.054000
1442016-02-230.045000
1452024-04-300.034000
1462018-07-250.034000
1472021-10-290.032000
1482022-01-310.030000
1492001-05-310.059000
1502004-03-250.050000
1512004-12-270.060000
1522016-08-250.042000
1532003-05-230.054000
1542003-09-240.057000
1552016-12-050.008000
1562017-10-250.035000
1572023-07-310.034000
1582023-12-290.036000
1592005-12-120.002000
1602008-03-250.047000
1612009-05-220.049000
1622020-02-280.038000
1632019-09-240.036000
1642022-10-310.034000
1652023-05-310.036000
1662024-11-290.037000
1672001-07-250.061000
1682003-01-310.058000
1692014-03-310.050000
1702023-09-290.034000
1712025-04-300.037000
1722025-07-310.039000
1732000-11-300.057000
1742000-12-290.059000
1752014-06-300.048000
1762020-10-300.035000
1772011-12-050.002000
1782019-04-240.039000
1792026-03-310.039000
1802003-12-150.006000
1812004-12-140.006000
1822005-10-240.046000
1832006-11-240.048000
1842000-09-290.056000
1852012-05-310.046000
1862012-07-310.044000
1872000-07-310.058000
1882003-04-240.056000
1892003-10-270.062000
1902009-06-240.059000
1912003-02-280.052000
1922007-04-240.046000
1932016-05-240.042000
1942013-08-300.048000
1952013-12-310.050000
1962002-04-230.072000
1972011-10-310.050000
1982012-06-290.046000
1992012-08-310.044000
2002010-07-300.048000
2012013-05-310.043000
2022003-07-250.056000
2032005-06-240.051000
2042006-05-240.046000
2052008-08-250.049000
2062001-10-250.058000
2072002-02-280.053000
2082009-09-240.053000
2092002-05-230.072000
2102007-09-250.043000
2112017-08-250.035000
2122017-12-050.022000
2132009-07-270.059000
2142009-12-240.052000
2152012-03-300.047000
2162020-05-290.036000
2172001-02-280.054000
2182003-03-250.054000
2192008-06-300.051000
2202009-01-260.058000
2212019-12-040.007000
2222021-08-310.032000
2232025-06-300.039000
2242008-09-240.052000
2252008-11-210.046000
2262015-12-240.047000
2272016-10-250.037000
2282004-08-250.052000
2292005-07-250.053000
2302020-03-310.037000
2312023-12-050.003000
2322024-07-310.037000
2332005-11-230.050000
2342012-12-310.045000
2352016-03-240.044000
2362021-12-030.001000
2372011-04-290.053000
2382012-04-300.048000
2392022-08-310.032000
2402025-10-310.038000
2412000-05-310.059000
2422002-08-300.058000
2432003-08-250.053000
2442004-05-240.051000
2452017-09-250.034000
2462023-02-280.034000
2472002-07-310.058000
2482006-07-250.048000
2492007-06-250.050000
2502010-02-260.050000
2512009-08-250.050000
2522012-10-310.045000
2532017-01-250.035000
2542019-02-220.040000
2552025-12-310.039000
2562007-10-250.047000
2572009-11-230.049000
2582018-11-260.041000
2592020-09-300.035000
2602009-03-250.052000
2612013-10-310.050000
2622019-01-250.042000
2632002-11-290.056000
2642005-04-250.056000
2652007-05-250.047000
2662007-12-240.046000
2672023-06-300.034000
2682023-10-310.035000
2692002-03-280.059000
2702004-09-240.056000
2712016-06-240.044000
2722022-12-300.032000
2732022-02-280.031000
2742024-09-300.037000
2752007-01-220.048000
2762007-02-230.054000
2772010-12-310.052000
2782013-03-280.044000
2792016-07-250.040000
2802022-12-050.015000
2812020-12-310.035000
2822026-02-270.039000
2832008-11-260.002000
2842017-03-270.040000
2852018-06-250.038000
2862019-12-310.036000
2872022-06-300.033000
2882005-09-260.053000
2892011-06-300.051000
2902019-10-250.037000
2912020-08-310.034000
2922007-07-250.047000
2932014-05-300.047000
2942017-06-260.042000
2952017-02-220.037000
2962018-12-240.039000
2972022-07-290.032000
2982024-03-280.036000
2992013-04-300.046000
3002013-07-310.048000
3012014-07-310.047000
3022016-11-230.038000
3032021-05-280.035000
3042003-12-240.060000
3052014-01-310.051000
3062020-11-300.035000
3072021-03-310.034000
3082016-09-260.042000
3092018-02-220.036000
3102021-02-260.036000
3112021-09-300.031000
3122005-08-250.049000
3132005-12-230.049000
3142008-02-290.051000
3152016-01-250.043000
3162015-01-280.046000
3172019-07-250.038000
3182020-01-310.038000
3192021-12-310.031000
3202005-05-240.049000
3212008-01-310.050000
3222010-09-300.050000
3232012-11-300.045000
3242002-10-310.058000
3252008-12-240.060000
3262010-08-310.049000
3272019-06-240.036000
3282017-11-240.036000
3292009-04-240.053000
3302013-01-310.044000
3312019-03-250.038000
3322008-07-250.056000
3332012-02-290.048000