f/overrides/event-backup/aaatx-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
22012-12-280.369000
32013-12-300.539000
42015-12-300.448000
52018-12-280.387000
62020-12-280.437000
72021-12-270.467000
82007-12-270.185000
92008-12-290.432000
102009-12-290.239000
112011-12-290.436000
122014-12-300.475000
132016-12-290.271000
142017-12-280.274000
152019-12-300.391000
162022-12-230.368000
172023-12-220.398000
182024-12-260.598000
192025-12-240.837000
202010-12-290.339000