f/overrides/event-backup/fyc-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

675 B

1DateDividends
22011-12-210.001000
32016-12-210.066000
42023-06-270.072000
52024-09-260.344000
62018-12-180.013000
72023-03-240.059000
82025-09-250.078000
92016-06-220.015000
102017-12-210.045000
112020-09-240.012000
122020-12-240.061000
132021-09-230.029000
142015-12-230.047000
152016-03-230.004000
162016-09-210.023000
172018-03-220.021000
182023-09-220.077000
192013-12-180.006000
202015-09-230.006000
212021-12-230.442000
222024-12-130.147000
232012-12-210.075000
242014-12-230.008000
252019-09-250.040000
262024-06-270.070000
272015-06-240.005000
282019-12-130.143000
292022-06-240.002000
302023-12-220.156000
312012-06-210.024000
322015-03-250.008000
332018-06-210.004000
342026-06-250.130000