f/overrides/event-backup/arfex-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

395 B

1DateDividends
22018-12-310.352000
32019-03-290.038000
42019-12-301.232000
52021-12-281.257000
62024-12-200.773000
72019-02-280.038000
82013-12-300.208000
92015-12-300.470000
102017-10-190.191000
112017-12-280.195000
122019-01-310.039000
132014-12-300.340000
142018-12-271.044000
152022-12-280.866000
162025-12-192.175000
172016-12-290.373000
182019-04-300.038000
192020-12-291.034000
202023-12-210.320000