f/overrides/event-backup/bgisx-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

1.3 KiB

1DateDividends
22024-01-310.063000
32025-03-310.061000
42022-12-300.054000
52023-05-310.058000
62024-10-310.062000
72026-07-310.053000
82022-01-310.040000
92022-06-170.037000
102022-10-310.052000
112025-11-280.051000
122023-08-310.059000
132025-04-300.060000
142026-02-270.048000
152022-04-290.042000
162022-09-300.047000
172022-06-300.044000
182023-07-310.059000
192025-02-280.054000
202025-12-310.056000
212021-07-290.128000
222021-08-310.042000
232026-03-310.054000
242022-08-310.047000
252024-02-290.057000
262025-01-310.061000
272026-01-300.054000
282026-05-290.053000
292022-03-310.042000
302024-09-300.060000
312023-04-280.056000
322025-11-250.006000
332026-04-300.053000
342021-10-290.044000
352023-03-310.056000
362023-10-310.060000
372025-05-300.060000
382021-11-300.043000
392022-02-280.037000
402021-12-030.249000
412023-02-280.049000
422024-11-260.013000
432021-06-290.046000
442024-07-310.063000
452024-12-310.062000
462025-06-300.057000
472025-09-300.054000
482025-10-310.057000
492021-12-310.043000
502023-11-300.066000
512024-04-300.060000
522024-05-310.063000
532024-06-280.060000
542025-08-290.057000
552026-06-300.052000
562022-07-290.046000
572023-06-300.057000
582024-11-290.073000
592025-07-310.058000
602022-05-310.044000
612023-12-290.062000
622022-11-300.081000
632024-03-280.062000
642023-09-290.057000
652024-08-300.063000
662021-09-300.041000
672023-01-310.049000