f/overrides/event-backup/asihx-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

2.8 KiB

1DateDividends
22021-11-300.021000
32024-01-310.031000
42016-08-310.018000
52017-09-290.016000
62020-05-290.013000
72016-09-300.020000
82018-02-280.019000
92021-06-300.022000
102026-01-300.031000
112019-03-290.022000
122020-10-300.020000
132019-06-280.015000
142025-06-300.033000
152026-05-290.031000
162015-09-300.020000
172017-06-300.017000
182020-01-310.006000
192021-08-310.020000
202023-11-300.033000
212025-01-310.037000
222018-01-310.019000
232018-12-310.027000
242017-10-310.016000
252017-11-300.016000
262023-05-310.031000
272026-04-300.032000
282016-03-310.025000
292017-04-280.021000
302021-03-310.021000
312022-12-300.040000
322025-03-310.035000
332016-06-300.021000
342020-07-310.018000
352017-05-310.018000
362022-04-290.013000
372022-08-310.019000
382023-07-310.029000
392025-11-280.031000
402015-06-300.022000
412015-11-300.020000
422020-11-300.020000
432021-05-280.019000
442021-09-300.022000
452022-06-300.018000
462023-12-290.034000
472014-12-310.068000
482020-09-300.020000
492018-06-290.025000
502020-08-310.017000
512023-01-310.025000
522025-09-300.032000
532026-02-270.031000
542015-01-300.021000
552016-05-310.021000
562022-11-300.026000
572025-05-300.036000
582015-04-300.022000
592015-08-310.019000
602015-10-300.018000
612018-08-310.025000
622019-02-280.024000
632023-10-310.033000
642014-09-300.021000
652015-07-310.022000
662025-04-300.035000
672018-03-290.026000
682019-10-310.016000
692022-05-310.016000
702022-07-290.018000
712026-03-310.030000
722014-10-310.023000
732016-04-290.022000
742024-02-290.035000
752018-05-310.020000
762023-03-310.034000
772017-12-290.019000
782020-12-310.024000
792024-11-290.037000
802016-02-290.024000
812016-07-290.017000
822023-06-300.032000
832024-12-310.037000
842025-02-280.037000
852017-03-310.019000
862017-08-310.019000
872023-02-280.028000
882025-12-310.033000
892016-12-300.018000
902022-10-310.023000
912024-05-310.036000
922016-10-310.018000
932021-01-290.017000
942017-01-310.022000
952019-05-310.016000
962021-12-070.215000
972024-06-280.034000
982015-03-310.024000
992016-01-290.020000
1002021-07-300.021000
1012025-07-310.032000
1022017-07-310.016000
1032022-03-310.011000
1042025-08-290.035000
1052015-02-270.022000
1062016-11-300.021000
1072018-11-300.025000
1082019-01-310.024000
1092020-06-300.016000
1102022-02-280.018000
1112024-09-300.034000
1122017-02-280.016000
1132018-07-310.022000
1142015-12-310.067000
1152019-08-300.017000
1162023-09-290.033000
1172024-10-310.035000
1182014-11-280.020000
1192018-10-310.025000
1202021-10-290.020000
1212020-02-280.012000
1222024-08-300.039000
1232020-04-300.015000
1242021-02-260.021000
1252026-06-300.032000
1262015-05-290.022000
1272020-03-310.012000
1282020-12-080.083000
1292021-04-300.024000
1302023-04-280.029000
1312024-07-310.037000
1322025-10-310.035000
1332018-09-280.023000
1342019-11-290.012000
1352024-03-280.032000
1362026-07-310.034000
1372019-12-310.013000
1382022-01-310.019000
1392019-07-310.015000
1402019-09-300.014000
1412021-12-310.023000
1422022-09-300.023000
1432023-08-310.032000
1442024-04-300.035000
1452018-04-300.019000
1462019-04-300.021000