f/overrides/event-backup/mmgpx-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

296 B

1DateDividends
22021-07-0710.995000
32025-07-080.031000
42016-06-300.440000
52019-07-052.040000
62020-07-072.338000
72006-07-050.779000
82012-07-031.403000
92015-07-022.119000
102014-07-021.939000
112007-07-030.676000
122011-07-070.046000
132013-07-020.332000
142008-07-023.211000
152018-07-053.001000