f/overrides/event-backup/ddiv-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

995 B

1DateDividends
22015-12-230.144000
32020-09-240.130000
42025-06-260.183000
52026-03-260.094000
62026-06-250.184000
72020-03-260.097000
82022-12-230.460000
92024-12-130.289000
102015-06-240.183000
112016-03-230.115000
122017-03-230.108000
132023-09-220.191000
142024-03-210.136000
152014-12-230.146000
162015-09-230.137000
172017-09-210.119000
182018-03-220.114000
192020-06-250.206000
202021-12-230.336000
212023-12-220.347000
222025-09-250.155000
232017-12-210.197000
242020-12-240.221000
252021-06-240.178000
262022-06-240.227000
272023-03-240.240000
282023-06-270.189000
292015-03-250.061000
302016-12-210.206000
312017-06-220.176000
322018-06-210.180000
332019-09-250.167000
342021-09-230.250000
352022-09-230.228000
362025-12-120.285000
372014-09-230.133000
382018-09-140.138000
392019-03-210.072000
402019-06-140.236000
412019-12-130.303000
422022-03-250.115000
432025-03-270.182000
442014-06-240.193000
452016-06-220.139000
462016-09-210.101000
472018-12-180.245000
482021-03-250.059000
492024-06-270.231000
502024-09-260.182000