f/overrides/event-backup/cgfyx-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

335 B

1DateDividends
22012-12-070.181000
32020-12-076.811000
42023-12-132.513000
52024-12-064.051000
62025-12-057.269000
72018-12-063.367000
82011-12-060.122000
92013-12-051.836000
102014-12-044.245000
112017-12-062.624000
122010-12-060.120000
132015-12-043.506000
142016-12-070.667000
152019-12-053.675000
162021-12-075.589000
172009-12-040.165000