f/overrides/event-backup/fnsdx-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
22021-05-140.738000
32023-05-120.085000
42024-05-100.025000
52019-12-300.360000
62019-05-100.512000
72025-05-090.380000
82025-12-300.347000
92018-05-110.328000
102018-12-280.469000
112021-12-301.095000
122022-05-060.950000
132022-12-290.421000
142026-05-080.681000
152017-12-280.373000
162020-12-300.346000
172023-12-280.207000
182024-12-300.311000
192020-05-080.317000