f/overrides/event-backup/edog-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

975 B

1DateDividends
22015-06-240.422000
32017-09-210.240000
42018-06-210.263000
52021-06-170.394000
62022-03-240.147000
72024-09-190.090000
82017-03-220.095000
92018-12-200.323000
102019-09-190.273000
112020-03-190.098000
122020-12-220.775000
132023-03-230.089000
142026-06-180.390000
152022-12-220.202000
162014-06-250.494000
172017-12-210.088000
182018-03-220.140000
192020-06-180.304000
202020-09-170.112000
212021-03-180.133000
222021-12-220.143000
232023-06-220.606000
242015-03-250.120000
252016-12-210.091000
262024-03-210.079000
272024-06-200.623000
282025-12-180.202000
292026-03-190.320000
302015-09-230.220000
312018-09-200.359000
322019-03-210.261000
332022-09-220.308000
342025-06-200.375000
352014-09-240.168000
362015-12-230.118000
372023-09-210.513000
382025-09-180.293000
392014-12-240.139000
402019-06-200.366000
412019-12-190.172000
422022-06-230.393000
432023-12-210.206000
442016-06-220.241000
452016-09-210.197000
462017-06-210.312000
472021-09-230.331000
482024-12-190.560000
492025-03-200.216000