f/overrides/event-backup/baffx-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

455 B

1DateDividends
22020-12-150.843000
32020-12-230.089000
42021-12-141.272000
52025-12-152.399000
62025-12-290.107000
72015-12-290.112000
82016-11-280.100000
92018-12-170.743000
102017-12-270.118000
112022-12-130.924000
122012-12-310.061000
132013-12-270.054000
142014-12-230.090000
152024-12-131.870000
162021-12-270.055000
172023-12-130.851000
182023-12-260.122000
192022-12-270.129000
202024-12-270.164000
212018-12-210.084000
222019-12-161.021000
232019-12-200.146000