f/overrides/event-backup/nanr-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

435 B

1DateDividends
22016-06-170.247000
32016-12-161.430000
42021-12-170.708000
52025-06-020.503000
62025-12-180.700000
72017-06-160.205000
82018-12-210.359000
92019-12-200.399000
102026-06-010.713000
112018-06-010.205000
122019-06-030.283000
132020-12-180.565000
142022-06-010.507000
152022-12-160.958000
162023-12-150.717000
172024-06-030.478000
182017-12-150.445000
192020-06-010.340000
202021-06-010.439000
212023-06-010.701000
222024-12-180.646000