f/overrides/event-backup/fsnpx-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
22017-12-280.418000
32019-12-300.473000
42024-12-300.427000
52020-05-080.331000
62022-12-290.424000
72023-05-120.012000
82023-12-280.281000
92025-05-090.311000
102019-05-100.409000
112020-12-300.569000
122021-05-140.605000
132021-12-300.994000
142026-05-080.415000
152018-05-110.330000
162018-12-280.505000
172022-05-060.715000
182024-05-100.109000
192025-12-300.654000