f/overrides/event-backup/asiax-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

475 B

1DateDividends
22006-12-150.906000
32013-12-131.974000
42015-12-110.888000
52018-12-142.099000
62023-12-150.770000
72007-12-143.620000
82008-12-120.353000
92012-12-070.854000
102014-12-121.373000
112019-12-132.195000
122021-12-162.563000
132022-12-162.002000
142000-12-140.036000
152005-12-160.118000
162009-12-110.286000
172010-12-100.486000
182016-12-130.615000
192017-12-132.798000
202024-12-162.376000
211998-12-160.040000
222011-12-092.367000
232020-12-152.809000
242025-12-185.972000