f/overrides/event-backup/fnsbx-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

375 B

1DateDividends
22023-05-120.055000
32024-12-300.271000
42018-05-110.319000
52019-12-300.325000
62021-05-140.665000
72021-12-301.000000
82022-12-290.383000
92024-05-100.020000
102025-05-090.332000
112025-12-300.339000
122017-12-280.348000
132018-12-280.486000
142019-05-100.470000
152020-05-080.302000
162020-12-300.374000
172026-05-080.598000
182022-05-060.847000
192023-12-280.179000