f/overrides/event-backup/nbarx-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

875 B

1DateDividends
22016-09-270.058000
32018-12-270.222000
42026-03-270.075000
52017-09-270.059000
62021-03-300.056000
72021-06-290.055000
82026-06-260.102000
92016-06-280.056000
102019-12-270.253000
112024-12-270.167000
122017-12-270.114000
132018-09-260.065000
142020-06-260.068000
152021-09-290.061000
162025-06-260.095000
172024-09-260.084000
182025-09-260.087000
192016-03-290.049000
202017-06-280.058000
212018-03-270.060000
222020-12-230.285000
232022-03-300.061000
242023-09-280.077000
252016-12-280.105000
262017-03-290.053000
272019-03-270.064000
282019-06-260.069000
292025-03-270.071000
302023-12-280.190000
312025-12-290.522000
322015-12-290.074000
332020-03-270.065000
342020-09-280.062000
352022-06-290.070000
362022-09-290.070000
372022-12-290.363000
382024-06-260.093000
392018-06-270.063000
402019-09-260.068000
412021-12-300.282000
422023-03-300.069000
432023-06-290.072000
442024-03-260.061000