f/overrides/event-backup/cborx-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

2.1 KiB

1DateDividends
22020-06-300.030000
32021-05-280.033000
42021-10-290.029000
52023-09-290.053000
62025-10-310.057000
72020-05-290.034000
82021-04-300.031000
92024-04-300.057000
102020-08-310.036000
112024-03-280.057000
122019-10-310.036000
132022-11-300.044000
142023-08-310.054000
152018-05-290.038000
162018-12-210.043000
172019-02-280.037000
182019-11-290.036000
192020-04-300.038000
202021-02-260.031000
212019-05-310.042000
222023-02-280.048000
232024-06-280.058000
242018-04-260.036000
252023-11-300.055000
262025-01-310.056000
272025-11-280.055000
282026-07-310.055000
292019-07-310.039000
302020-01-310.035000
312021-08-310.032000
322021-12-310.029000
332024-01-310.055000
342021-06-300.030000
352022-02-280.030000
362022-09-300.039000
372024-08-300.059000
382026-02-270.053000
392022-12-300.045000
402025-02-280.055000
412025-07-310.058000
422018-01-290.029000
432021-03-310.030000
442022-05-310.035000
452026-04-300.054000
462018-06-260.034000
472018-10-290.037000
482019-01-290.039000
492023-10-310.054000
502026-01-300.055000
512019-03-290.041000
522021-07-300.030000
532023-03-310.049000
542025-04-300.056000
552020-12-030.214000
562024-02-290.057000
572018-02-260.030000
582019-04-300.042000
592020-03-310.038000
602020-11-300.034000
612022-08-310.040000
622023-04-280.049000
632022-04-290.031000
642022-06-300.035000
652025-08-290.057000
662020-02-280.036000
672020-09-300.034000
682024-11-290.057000
692019-12-310.037000
702021-09-300.029000
712022-07-290.037000
722025-03-310.058000
732018-03-260.036000
742018-08-290.040000
752022-10-310.041000
762023-01-310.047000
772024-10-310.059000
782024-05-310.058000
792020-10-300.033000
802021-11-300.031000
812021-12-030.200000
822022-03-310.031000
832020-07-310.033000
842022-01-310.030000
852025-06-300.057000
862019-09-300.034000
872026-06-300.055000
882018-07-270.039000
892017-10-260.028000
902017-11-290.037000
912018-09-250.032000
922018-11-280.037000
932019-06-280.041000
942023-07-310.052000
952024-12-310.058000
962020-12-310.031000
972023-06-300.049000
982025-05-300.058000
992026-03-310.054000
1002017-12-270.037000
1012019-12-040.149000
1022023-05-310.051000
1032025-09-300.057000
1042019-08-300.037000
1052021-01-290.029000
1062023-12-290.055000
1072024-07-310.059000
1082026-05-290.054000
1092024-09-300.059000
1102025-12-310.057000