f/overrides/event-backup/hyifx-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

3.2 KiB

1DateDividends
22013-07-310.022000
32019-04-300.020000
42019-08-300.021000
52025-11-280.020000
62025-12-310.020000
72014-06-300.022000
82016-04-290.020000
92018-07-310.019000
102018-09-280.019000
112023-11-300.020000
122023-05-310.018000
132024-01-310.020000
142024-06-280.020000
152019-11-290.021000
162020-05-290.021000
172020-12-310.021000
182021-04-300.016000
192022-10-310.016000
202024-09-300.020000
212025-08-290.020000
222012-11-300.022000
232020-10-300.021000
242025-09-300.020000
252026-06-300.020000
262019-09-300.021000
272022-01-310.016000
282022-06-300.016000
292026-04-300.020000
302017-02-280.019000
312022-04-290.016000
322022-12-300.016000
332018-04-300.019000
342018-10-310.019000
352022-11-300.016000
362024-05-310.020000
372024-08-300.020000
382018-05-310.019000
392023-01-310.017000
402013-05-310.022000
412022-02-280.016000
422023-06-300.018000
432015-08-310.021000
442015-12-310.021000
452019-02-280.020000
462013-11-290.023000
472016-06-300.020000
482025-03-310.020000
492020-04-300.021000
502020-09-300.021000
512021-09-300.016000
522021-10-290.016000
532024-10-310.020000
542018-01-310.019000
552019-01-310.020000
562021-07-300.016000
572021-11-300.016000
582024-12-310.024000
592020-01-310.021000
602023-02-280.017000
612013-08-300.022000
622014-12-310.023000
632015-02-270.021000
642015-10-300.021000
652019-07-310.021000
662025-05-300.020000
672015-11-300.021000
682016-08-310.020000
692016-12-300.020000
702022-03-310.016000
712024-02-290.020000
722018-06-290.019000
732019-06-280.021000
742019-10-310.021000
752023-04-280.017000
762024-11-290.020000
772017-03-310.019000
782025-02-280.020000
792026-03-310.020000
802013-12-310.023000
812016-02-290.020000
822025-06-300.020000
832025-10-310.020000
842026-01-300.020000
852025-04-300.020000
862013-02-280.022000
872015-09-300.021000
882018-12-310.019000
892019-12-310.021000
902020-06-300.021000
912014-07-310.022000
922016-07-290.020000
932017-01-310.019000
942017-07-310.019000
952016-09-300.020000
962017-06-300.019000
972018-02-280.019000
982013-03-280.022000
992013-09-300.022000
1002014-01-310.023000
1012014-10-310.023000
1022015-07-310.021000
1032019-05-310.020000
1042025-01-310.020000
1052026-05-290.020000
1062022-09-300.016000
1072014-04-300.023000
1082014-05-300.022000
1092017-08-310.019000
1102017-10-310.019000
1112021-12-310.016000
1122021-03-310.016000
1132022-05-310.016000
1142022-08-310.016000
1152013-01-310.022000
1162014-02-280.023000
1172015-01-300.023000
1182018-08-310.019000
1192019-03-290.020000
1202023-07-310.019000
1212017-11-300.019000
1222020-07-310.021000
1232023-12-290.030000
1242022-07-290.016000
1252014-08-290.023000
1262015-06-300.021000
1272016-05-310.020000
1282016-11-300.019000
1292017-12-290.019000
1302013-10-310.023000
1312017-09-290.019000
1322020-11-300.021000
1332021-02-260.018000
1342021-08-310.016000
1352023-09-290.019000
1362013-06-280.022000
1372014-03-310.023000
1382014-09-300.023000
1392016-01-290.021000
1402016-03-310.020000
1412018-11-300.019000
1422021-06-300.016000
1432023-08-310.019000
1442024-07-310.020000
1452026-07-310.020000
1462013-04-300.022000
1472015-03-310.021000
1482021-05-280.016000
1492024-03-280.020000
1502023-10-310.019000
1512012-12-310.022000
1522014-11-280.023000
1532015-05-290.021000
1542020-08-310.021000
1552023-03-310.017000
1562024-04-300.020000
1572026-02-270.020000
1582012-10-310.022000
1592016-10-310.019000
1602017-04-280.019000
1612017-05-310.019000
1622020-03-310.021000
1632015-04-300.021000
1642018-03-290.019000
1652020-02-280.021000
1662021-01-290.018000