f/overrides/event-backup/fiw-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
22026-06-250.189000
32010-06-220.095000
42011-06-210.125000
52012-06-210.174000
62017-09-210.060000
72017-12-210.086000
82023-12-220.203000
92025-12-120.227000
102011-12-210.064000
112013-12-180.038000
122015-09-230.056000
132018-03-220.064000
142021-09-230.083000
152023-09-220.144000
162007-12-210.045000
172008-06-230.030000
182015-12-230.059000
192020-09-240.095000
202021-03-250.060000
212014-06-240.105000
222016-12-210.046000
232019-09-250.051000
242021-06-240.099000
252024-03-210.080000
262020-12-240.123000
272025-06-260.231000
282008-12-230.088000
292016-06-220.066000
302018-12-180.107000
312019-03-210.088000
322020-03-260.072000
332020-06-250.112000
342023-03-240.083000
352012-09-210.027000
362016-03-230.040000
372017-06-220.113000
382023-06-270.216000
392014-09-230.055000
402013-03-210.024000
412021-12-230.112000
422022-09-230.105000
432009-06-230.120000
442010-12-210.047000
452012-12-210.048000
462013-06-210.109000
472013-09-200.041000
482017-03-230.293000
492019-06-140.130000
502019-12-130.062000
512016-09-210.050000
522018-09-140.064000
532014-12-230.055000
542022-12-230.159000
552024-09-260.153000
562024-12-130.271000
572026-03-260.191000
582009-12-220.074000
592024-06-270.206000
602014-03-250.037000
612015-06-240.066000
622025-03-270.118000
632025-09-250.171000
642015-03-250.047000
652018-06-210.086000
662022-03-250.087000
672022-06-240.180000