f/overrides/event-backup/aifrx-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

1.3 KiB

1DateDividends
22012-06-290.160000
32020-12-220.190000
42011-03-300.080000
52022-06-170.190000
62022-12-210.460000
72017-06-300.190000
82017-09-290.190000
92023-12-210.229000
102024-03-150.190000
112012-09-280.160000
122020-09-180.190000
132015-03-310.180000
142019-03-150.190000
152020-03-130.190000
162024-12-201.215000
172025-12-191.443000
182013-12-060.348000
192016-09-300.190000
202020-06-190.190000
212021-09-170.190000
222023-06-160.190000
232019-09-130.190000
242011-09-290.160000
252012-12-310.160000
262017-03-310.190000
272017-12-150.072000
282017-12-290.190000
292011-06-290.160000
302013-06-280.170000
312019-06-140.190000
322022-03-180.190000
332025-06-200.190000
342025-09-190.190000
352012-03-300.160000
362014-12-050.190000
372016-12-300.190000
382021-03-190.190000
392022-09-160.190000
402013-12-310.183000
412025-03-210.190000
422013-09-300.170000
432019-12-200.333000
442021-12-220.451000
452010-12-301.145000
462013-03-280.160000
472016-06-300.190000
482018-06-290.190000
492014-03-310.170000
502015-09-300.190000
512015-12-310.190000
522018-03-290.190000
532018-12-200.153000
542021-06-180.190000
552014-06-300.180000
562014-09-300.180000
572014-12-310.180000
582015-06-300.190000
592016-03-310.190000
602023-03-170.190000
612023-09-150.190000
622024-06-210.190000
632024-09-200.190000
642009-12-230.202000
652011-12-290.160000
662018-09-140.190000
672026-03-200.190000
682026-06-180.190000