f/overrides/event-backup/ibds-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
22026-03-020.085000
32018-03-010.069000
42018-05-010.068000
52024-07-010.088000
62026-07-010.085000
72021-02-010.052000
82025-02-030.088000
92018-02-010.068000
102019-02-010.076000
112019-03-010.076000
122022-11-010.064000
132026-06-010.086000
142024-11-010.088000
152025-12-010.086000
162023-06-010.075000
172025-03-030.089000
182019-07-010.075000
192019-12-020.070000
202022-12-150.068000
212023-12-140.076000
222022-08-010.057000
232023-03-010.073000
242024-03-010.084000
252018-04-020.070000
262020-12-010.054000
272018-11-010.075000
282020-04-010.064000
292024-02-010.086000
302019-04-010.074000
312020-06-010.060000
322023-07-030.080000
332023-09-010.075000
342022-12-010.065000
352023-10-020.074000
362024-12-020.088000
372018-06-010.075000
382018-12-030.075000
392023-02-010.072000
402025-05-010.088000
412026-02-020.085000
422019-09-030.070000
432021-10-010.048000
442021-12-160.046000
452025-12-190.091000
462020-02-030.070000
472021-03-010.052000
482021-07-010.048000
492017-11-010.105000
502017-12-210.038000
512018-08-010.071000
522020-09-010.059000
532025-09-020.087000
542021-04-010.050000
552023-04-030.073000
562025-07-010.088000
572017-12-010.098000
582020-07-010.063000
592020-08-030.062000
602022-07-010.058000
612024-04-010.086000
622024-10-010.089000
632019-11-010.072000
642021-11-010.047000
652018-12-180.069000
662022-02-010.047000
672022-03-010.049000
682022-04-010.043000
692022-09-010.057000
702022-10-030.066000
712025-04-010.089000
722019-06-030.075000
732020-10-010.058000
742021-08-020.048000
752024-08-010.089000
762026-04-010.086000
772024-12-180.090000
782025-06-020.088000
792018-09-040.073000
802021-12-010.045000
812019-05-010.074000
822022-06-010.052000
832024-06-030.087000
842023-12-010.081000
852024-05-010.085000
862018-07-020.072000
872020-11-020.056000
882025-08-010.088000
892019-08-010.070000
902019-12-190.064000
912023-08-010.079000
922024-09-030.088000
932025-10-010.088000
942018-10-010.070000
952019-10-010.066000
962021-09-010.047000
972023-05-010.075000
982023-11-010.079000
992025-11-030.088000
1002020-12-170.052000
1012021-05-030.050000
1022020-03-020.068000
1032022-05-020.045000
1042026-05-010.086000
1052026-08-030.085000
1062020-05-010.067000
1072021-06-010.048000