f/overrides/event-backup/burkx-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

424 B

1DateDividendsctime
22008-12-170.6732017-08-22
32010-04-300.0322017-08-22
42010-12-160.0872017-08-22
52000-12-280.0632017-08-22
62011-12-160.012017-08-22
72005-12-151.4332017-08-22
82006-12-152.182017-08-22
92007-12-141.6822017-08-22
102015-12-071.2722017-08-22
112009-12-150.1552017-08-22
121999-12-200.022017-08-22
132003-12-290.0292017-08-22
142004-12-285.132017-08-22
152014-12-180.7442017-08-22