f/overrides/event-backup/cgw-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

395 B

1DateDividends
22020-12-210.660000
32025-12-220.996000
42007-12-260.108000
52009-12-240.200000
62011-12-230.411000
72012-12-240.451000
82018-12-240.667000
92010-12-270.417000
102016-12-230.470000
112015-12-240.454000
122019-12-230.607000
132021-12-200.964000
142022-12-190.677000
152024-12-231.229000
162008-12-241.242000
172013-12-240.420000
182014-12-240.498000
192017-12-260.609000
202023-12-180.822000