f/overrides/event-backup/cgdv-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

375 B

1DateDividends
22025-09-300.136000
32026-06-300.147000
42022-03-300.029000
52022-06-290.055000
62023-12-270.167000
72024-03-280.100000
82024-06-280.129000
92024-12-260.185000
102022-12-230.139000
112023-09-280.117000
122025-03-310.107000
132025-06-300.130000
142025-12-260.193000
152022-09-290.097000
162024-09-300.150000
172026-03-310.110000
182023-03-300.091000
192023-06-290.119000