f/overrides/event-backup/aaftx-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
22007-12-270.140000
32009-12-290.190000
42010-12-290.230000
52015-12-300.682000
62020-12-280.629000
72022-12-230.839000
82024-12-260.805000
92012-12-280.275000
102013-12-300.249000
112014-12-300.464000
122017-12-280.353000
132023-12-220.459000
142008-12-290.334000
152018-12-280.642000
162025-12-241.249000
172011-12-290.201000
182016-12-290.443000
192019-12-300.665000
202021-12-271.025000