f/overrides/event-backup/afiax-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

1.1 KiB

1DateDividendsctime
22015-03-300.0512017-10-11 10:53:02
32015-06-290.0152017-10-11 10:53:02
42013-03-270.0942017-10-11 10:53:02
52011-03-310.0442017-10-11 10:53:02
62015-12-210.0662017-10-11 10:53:02
72015-09-290.0132017-10-11 10:53:02
82009-12-310.0372017-10-11 10:53:02
92011-06-300.0632017-10-11 10:53:02
102013-06-270.0362017-10-11 10:53:02
112011-12-300.8142017-10-11 10:53:02
122013-12-190.4492017-10-11 10:53:02
132011-09-300.0562017-10-11 10:53:02
142013-09-270.0132017-10-11 10:53:02
152016-03-300.0162017-10-11 10:53:02
162010-03-310.0352017-10-11 10:53:02
172012-03-300.0312017-10-11 10:53:02
182014-03-280.0612017-10-11 10:53:02
192014-12-220.4572017-10-11 10:53:02
202014-09-290.0412017-10-11 10:53:02
212010-06-300.052017-10-11 10:53:02
222012-06-280.0522017-10-11 10:53:02
232010-12-310.272017-10-11 10:53:02
242014-06-270.0392017-10-11 10:53:02
252012-12-190.0112017-10-11 10:53:02
262010-09-300.0512017-10-11 10:53:02
272012-09-270.0542017-10-11 10:53:02
282014-12-190.4572017-10-11 10:53:02
292016-12-190.1672017-10-11 10:53:02