f/overrides/event-backup/esblx-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

2.2 KiB

1DateDividends
22020-12-170.005000
32019-12-190.016000
42020-03-310.029000
52020-08-310.026000
62022-01-310.024000
72024-01-310.063000
82017-12-290.030000
92021-06-300.024000
102023-06-300.058000
112024-10-310.056000
122025-12-310.058000
132019-01-310.038000
142021-05-280.024000
152023-02-280.051000
162018-03-290.031000
172025-02-280.048000
182020-09-300.025000
192024-12-310.054000
202018-09-280.032000
212021-02-260.023000
222021-11-300.023000
232017-11-300.029000
242022-05-310.028000
252025-04-300.054000
262021-01-290.025000
272021-10-290.024000
282024-11-290.054000
292026-01-300.046000
302020-04-300.026000
312020-11-300.026000
322023-03-310.056000
332018-02-280.029000
342024-04-300.059000
352026-03-310.043000
362020-06-300.025000
372020-05-290.026000
382018-05-310.033000
392019-12-310.033000
402022-08-310.040000
412025-06-300.051000
422018-12-310.035000
432021-07-300.024000
442021-12-310.028000
452022-02-280.022000
462024-05-310.061000
472018-01-310.031000
482024-07-310.061000
492025-07-310.052000
502025-10-310.049000
512026-05-290.042000
522022-11-300.051000
532022-12-300.051000
542023-05-310.057000
552023-12-290.090000
562025-09-300.047000
572022-04-290.026000
582018-10-310.035000
592019-05-310.037000
602019-08-300.036000
612019-10-310.032000
622023-08-310.064000
632017-10-310.031000
642018-04-300.031000
652023-10-310.061000
662024-03-280.061000
672017-08-310.030000
682019-03-290.040000
692020-07-310.026000
702023-04-280.056000
712021-03-310.025000
722021-09-300.023000
732017-09-290.029000
742019-11-290.031000
752021-04-300.026000
762023-09-290.057000
772019-06-280.036000
782020-02-280.029000
792022-06-300.030000
802023-07-310.061000
812018-11-300.034000
822024-09-300.057000
832025-11-280.046000
842026-06-300.040000
852018-07-310.033000
862025-03-310.054000
872022-09-300.039000
882023-01-310.054000
892026-02-270.040000
902019-04-300.036000
912026-04-300.040000
922024-06-280.059000
932020-01-310.032000
942022-07-290.035000
952024-02-290.058000
962024-08-300.059000
972025-05-300.052000
982025-08-290.051000
992018-08-310.033000
1002019-07-310.045000
1012019-09-300.034000
1022020-10-300.026000
1032020-12-310.026000
1042022-03-310.025000
1052022-10-310.045000
1062018-06-290.032000
1072023-11-300.063000
1082021-08-310.025000
1092025-01-310.054000
1102026-07-310.043000
1112019-02-280.034000