f/overrides/event-backup/lmchx-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

455 B

1DateDividends
22022-12-202.038000
32023-07-270.105000
42015-12-180.263000
52019-07-310.002000
62019-12-180.989000
72020-12-180.418000
82025-12-181.137000
92016-12-160.246000
102017-12-150.875000
112022-07-280.411000
122023-12-190.372000
132015-07-310.004000
142016-07-290.002000
152018-07-310.003000
162025-07-291.325000
172024-07-250.033000
182024-12-173.367000
192026-07-280.591000
202017-07-280.009000
212018-12-181.652000
222019-03-290.047000
232021-12-173.020000