f/overrides/event-backup/oakex-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

615 B

1DateDividends
22021-12-160.318000
32025-12-111.150000
41998-11-230.205000
52004-12-090.648000
62006-12-143.998000
72009-12-170.164000
82013-12-190.553000
92015-12-170.717000
101996-12-110.436000
112000-11-170.825000
122001-11-150.303000
132023-12-140.357000
141999-11-190.704000
152018-12-131.112000
162020-12-100.316000
172007-12-135.843000
182011-12-150.018000
192019-12-120.034000
202002-11-210.364000
212005-12-154.244000
222008-12-181.061000
232014-12-181.155000
242022-12-150.315000
252024-12-121.139000
261997-11-181.393000
272012-12-130.210000
282003-11-200.117000
292010-12-160.078000
302016-11-280.451000
312017-12-140.645000