f/overrides/event-backup/driv-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

335 B

1DateDividends
22026-06-290.074000
32021-06-290.057000
42023-12-280.224000
52022-12-290.139000
62024-06-270.183000
72025-06-270.171000
82019-06-270.112000
92020-06-290.050000
102025-12-300.145000
112021-12-300.042000
122024-12-300.291000
132020-12-300.020000
142022-06-290.108000
152023-06-290.175000
162018-12-280.325000
172019-12-300.070000