f/overrides/event-backup/auldx-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
22024-12-173.344000
32025-12-1610.892000
42013-12-171.547000
52016-12-201.829000
62019-03-190.047000
72022-12-214.095000
82023-12-194.536000
92020-12-082.125000
102021-12-075.941000
112014-12-162.781000
122015-12-222.034000
132017-12-192.775000
142018-12-183.333000
152019-12-172.229000