f/overrides/event-backup/nacp-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

635 B

1DateDividends
22020-12-280.261000
32021-09-270.070000
42022-09-270.095000
52026-03-300.124000
62020-03-260.063000
72020-09-250.059000
82021-06-250.068000
92024-03-260.111000
102018-12-240.089000
112021-03-260.074000
122022-06-270.088000
132024-09-260.113000
142020-06-250.045000
152022-12-270.658000
162025-09-290.102000
172026-06-290.106000
182019-06-240.072000
192019-12-230.060000
202024-12-260.889000
212025-06-270.104000
222023-06-270.100000
232023-09-260.121000
242023-12-260.108000
252019-03-250.076000
262019-09-250.072000
272021-12-280.882000
282023-03-280.107000
292018-09-250.049000
302022-03-280.083000
312024-06-280.100000
322025-03-280.102000