f/overrides/event-backup/hewu-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

295 B

1DateDividends
22023-10-100.071140
32020-12-240.236200
42018-12-280.454642
52020-07-020.339606
62019-12-240.421184
72021-12-230.000001
82017-12-280.014816
92019-07-020.608662
102017-07-060.052951
112018-07-030.048480
122022-07-050.000656
132023-07-030.527851
142016-07-060.581008
152016-12-280.288337