f/overrides/event-backup/ablox-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
21991-03-280.039000
31990-08-310.057000
41991-08-300.036000
51992-03-310.024000
61992-06-300.021000
72015-12-160.304000
81991-07-310.037000
92018-12-182.975000
101997-05-300.278000
111989-12-290.058000
121990-05-310.058000
131990-06-290.055000
141991-02-280.040000
151992-05-290.021000
161992-07-310.018000
171995-05-310.216000
181990-07-310.058000
191991-01-310.048000
202021-12-150.715000
212025-12-173.095000
222008-05-140.325000
232012-12-180.001000
241990-01-310.058000
251990-03-300.058000
261990-12-310.051000
271991-04-170.002000
282007-05-160.314000
292009-05-130.309000
301989-10-310.061000
311991-05-310.041000
322012-05-080.162000
332013-12-180.157000
342024-12-120.041000
351989-09-290.047000
361989-11-300.058000
371990-04-300.059000
381990-11-300.053000
391991-11-290.029000
401991-12-310.029000
411992-04-300.023000
421991-10-310.033000
431992-09-300.016000
442001-05-310.439000
451990-09-280.049000
461991-04-300.043000
471992-02-280.020000
482004-05-280.196000
492017-12-150.486000
502020-12-160.264000
511992-08-310.017000
521994-05-310.277000
532005-05-310.227000
541998-05-290.985000
551990-02-280.053000
561991-06-280.038000
571993-04-300.026000
581999-05-281.008000
592003-05-300.257000
602019-12-180.622000
611990-10-310.056000
621992-01-310.025000
632006-05-310.952000
642022-12-150.983000
652023-12-140.326000
662000-05-311.391000
672014-12-180.283000
682016-12-140.295000