f/overrides/event-backup/aor-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

1.4 KiB

1DateDividends
22008-12-260.169000
32012-06-260.235000
42014-04-020.141000
52012-09-260.135000
62018-04-030.160000
72020-10-020.162000
82025-10-020.268000
92009-12-280.191000
102017-12-281.391000
112025-12-230.669000
122012-03-270.085000
132013-07-020.260000
142019-12-240.403000
152023-07-050.386000
162022-04-040.150000
172023-10-030.222000
182013-04-020.135000
192016-10-040.140000
202018-10-020.186000
212021-07-020.275000
222024-04-020.221000
232024-10-020.270000
242023-12-220.524000
252017-07-060.320000
262019-07-020.423000
272020-04-020.186000
282009-09-240.125000
292013-10-020.140000
302014-12-260.231000
312015-12-290.010000
322009-03-260.062000
332019-10-020.198000
342026-04-020.309000
352014-07-020.318000
362015-07-020.330000
372021-12-230.407000
382023-04-040.199000
392025-04-020.248000
402026-07-020.522000
412017-04-040.153000
422017-10-030.161000
432020-12-240.334000
442021-10-040.138000
452010-09-270.108000
462015-12-280.209000
472024-07-020.424000
482013-12-270.206000
492016-07-060.312000
502022-07-050.353000
512022-12-230.318000
522024-12-200.608000
532025-07-020.470000
542009-06-250.221000
552010-12-270.199000
562015-10-020.130000
572018-12-280.311000
582020-07-020.304000
592021-04-050.114000
602022-10-040.180000
612010-03-260.077000
622012-12-260.252000
632015-04-020.144000
642019-04-020.201000
652011-12-270.223000
662014-10-020.156000
672016-12-280.274000
682018-07-030.371000
692010-06-250.197000
702011-03-280.110000
712011-06-270.260000
722011-09-270.159000