f/overrides/event-backup/cgus-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

355 B

1DateDividends
22026-03-310.089000
32022-03-300.029000
42024-06-280.079000
52024-12-260.107000
62025-06-300.097000
72023-06-290.083000
82023-09-280.082000
92022-12-230.091000
102024-03-280.075000
112025-03-310.085000
122026-06-300.083000
132025-09-300.093000
142025-12-260.106000
152022-06-290.048000
162023-03-300.079000
172023-12-270.102000
182024-09-300.094000