f/overrides/event-backup/fnsfx-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
22026-05-080.621000
32017-12-280.299000
42020-12-300.284000
52022-05-060.811000
62023-05-120.087000
72023-12-280.190000
82018-12-280.373000
92020-05-080.263000
102022-12-290.363000
112025-05-090.330000
122025-12-300.308000
132018-05-110.253000
142021-05-140.596000
152021-12-300.924000
162019-05-100.408000
172019-12-300.336000
182024-05-100.059000
192024-12-300.277000