f/overrides/event-backup/mrimx-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

375 B

1DateDividends
22018-12-260.233000
32022-12-140.956000
42023-12-210.173000
52015-12-290.204000
62017-12-260.191000
72023-12-130.584000
82024-12-180.393000
92019-12-230.140000
102020-12-220.521000
112021-12-161.157000
122021-12-220.050000
132022-12-210.359000
142024-12-133.549000
152016-12-280.059000
162017-12-200.622000
172018-12-190.985000
182025-12-120.825000
192025-12-180.235000