f/overrides/event-backup/ewt-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

495 B

1DateDividends
22009-12-220.416000
32010-12-210.580000
42011-12-200.946000
52016-12-210.701000
62019-12-161.023000
72000-08-241.716000
82003-12-220.044000
92008-12-231.204000
102022-12-137.558000
112023-12-205.527000
122025-12-162.816000
132021-12-131.760000
142004-12-230.160000
152012-12-180.542000
162018-12-180.998000
172014-12-170.582000
182020-12-140.973000
192013-12-180.524000
202015-12-210.798000
212017-12-191.019000
222024-12-171.718000
232005-12-230.272000
242006-12-200.604000
252007-12-240.780000