f/overrides/event-backup/ivfax-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

3.5 KiB

1DateDividends
22016-11-290.007000
32017-12-260.023000
42008-06-270.017000
52015-04-290.013000
62021-05-270.022000
72022-07-280.004000
82012-04-270.014000
92013-02-270.011000
102013-04-290.019000
112019-06-270.010000
122020-10-290.002000
132012-12-260.020000
142015-02-260.009000
152023-09-280.014000
162025-01-300.005000
172013-05-300.028000
182017-04-270.019000
192024-06-270.018000
202022-04-280.023000
212023-02-270.002000
222024-07-300.004000
232012-03-260.027000
242016-12-270.018000
252018-04-270.021000
262020-05-280.021000
272020-09-290.010000
282024-01-300.005000
292026-03-230.019000
302012-10-310.001000
312017-03-300.016000
322020-04-290.012000
332021-11-290.006000
342023-06-290.014000
352012-09-270.013000
362021-04-290.015000
372024-09-270.011000
382009-12-290.022000
392011-09-270.028000
402016-06-290.014000
412022-01-280.002000
422024-04-290.020000
432018-12-260.021000
442019-10-300.001000
452022-09-290.011000
462024-05-300.032000
472020-12-280.022000
482022-08-300.003000
492011-03-280.025000
502015-01-290.007000
512017-07-280.006000
522017-09-280.008000
532018-09-270.010000
542015-05-280.013000
552016-05-270.008000
562016-09-290.006000
572011-06-270.070000
582014-02-270.051000
592014-07-300.003000
602014-09-290.008000
612014-11-260.011000
622025-11-260.007000
632022-10-280.003000
642023-05-300.032000
652016-03-300.011000
662018-02-270.013000
672018-06-280.019000
682019-12-260.016000
692022-05-270.022000
702024-12-270.018000
712010-06-280.066000
722012-05-300.026000
732014-03-280.020000
742019-08-290.003000
752023-04-270.017000
762019-03-280.016000
772019-09-270.011000
782021-01-280.001000
792012-08-300.013000
802013-01-300.007000
812013-09-270.007000
822017-05-300.027000
832018-11-290.013000
842024-03-270.022000
852026-04-220.030000
862026-07-220.010000
872015-07-300.007000
882021-06-290.018000
892025-04-290.014000
902025-05-290.032000
912026-05-220.036000
922021-12-280.019000
932023-10-300.003000
942026-02-230.006000
952016-02-260.016000
962017-02-270.007000
972017-11-290.011000
982020-07-300.011000
992020-08-280.005000
1002025-08-280.006000
1012026-01-220.003000
1022014-01-300.005000
1032015-06-290.013000
1042015-09-300.019000
1052018-01-300.003000
1062022-12-280.020000
1072022-06-290.011000
1082024-10-300.005000
1092013-03-270.012000
1102015-03-300.018000
1112018-07-300.007000
1122023-01-300.004000
1132018-05-300.020000
1142026-06-220.006000
1152013-08-290.014000
1162014-05-290.028000
1172014-12-260.029000
1182017-08-300.010000
1192018-03-280.018000
1202010-09-270.031000
1212020-11-270.006000
1222016-08-300.011000
1232019-04-290.016000
1242024-02-280.003000
1252023-12-270.020000
1262024-08-290.007000
1272024-11-270.007000
1282009-06-290.084000
1292010-12-270.034000
1302012-11-290.011000
1312019-01-300.005000
1322023-07-280.004000
1332025-07-300.012000
1342025-12-290.020000
1352014-08-280.016000
1362016-07-280.002000
1372019-11-270.012000
1382020-02-270.007000
1392022-03-300.023000
1402021-07-290.008000
1412023-08-300.002000
1422025-06-270.012000
1432008-12-290.082000
1442012-06-280.004000
1452013-06-270.006000
1462019-02-270.008000
1472019-05-300.031000
1482021-03-300.012000
1492022-11-290.009000
1502023-03-300.019000
1512011-12-270.019000
1522013-12-260.025000
1532014-04-290.017000
1542017-01-300.001000
1552020-01-300.003000
1562013-11-270.012000
1572016-04-280.016000
1582021-08-300.003000
1592025-10-300.011000
1602020-06-290.010000
1612012-07-300.005000
1622015-12-280.016000
1632018-08-300.004000
1642019-07-300.008000
1652020-03-300.008000
1662015-11-270.015000
1672021-09-290.015000
1682021-10-280.005000
1692025-02-270.005000
1702025-09-290.012000
1712014-06-270.013000
1722021-02-250.003000
1732025-03-280.022000
1742010-03-290.022000
1752013-07-300.003000
1762017-06-290.019000
1772023-11-290.010000