f/overrides/event-backup/jrbyx-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

995 B

1DateDividends
22019-12-160.106000
32020-03-310.092000
42021-03-310.082000
52021-06-300.138000
62013-06-280.058000
72015-03-310.061000
82018-03-290.081000
92018-12-310.179000
102017-09-290.097000
112020-09-300.109000
122015-06-300.123000
132015-09-300.076000
142015-12-310.164000
152017-03-310.065000
162023-12-290.680000
172024-12-310.804000
182014-06-300.138000
192018-09-280.107000
202018-12-140.694000
212021-09-300.089000
222019-03-290.090000
232019-12-310.180000
242020-12-150.264000
252021-12-310.287000
262012-09-280.113000
272013-12-180.011000
282018-06-290.176000
292017-12-290.198000
302025-12-310.962000
312013-12-310.141000
322014-12-170.077000
332016-06-300.128000
342016-09-300.083000
352016-03-310.067000
362016-12-300.174000
372017-06-300.136000
382019-09-300.115000
392013-09-300.062000
402014-09-300.075000
412014-12-310.140000
422015-12-180.007000
432020-06-300.090000
442020-12-310.136000
452021-12-150.818000
462022-12-300.537000
472012-12-310.126000
482013-03-280.056000
492014-03-310.062000
502019-06-280.187000