f/overrides/event-backup/mbdlx-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

2.7 KiB

1DateDividends
22020-09-280.017000
32021-01-270.017000
42022-03-290.014000
52024-02-270.024000
62015-08-260.016000
72016-10-260.018000
82020-02-260.021000
92021-02-240.015000
102020-08-270.016000
112024-06-260.026000
122025-04-280.028000
132025-10-290.031000
142016-12-270.018000
152018-09-260.020000
162016-03-280.018000
172021-10-270.012000
182022-07-270.018000
192023-02-240.020000
202024-11-260.027000
212025-11-250.027000
222017-04-250.018000
232022-04-270.014000
242019-09-260.021000
252023-06-280.022000
262017-12-270.021000
272019-04-260.021000
282020-10-280.017000
292021-07-280.013000
302023-03-290.022000
312024-05-290.027000
322024-08-280.027000
332019-01-290.020000
342019-10-290.022000
352019-12-160.025000
362023-04-260.021000
372016-08-260.018000
382017-07-260.018000
392023-07-270.023000
402024-04-260.026000
412026-01-280.029000
422016-09-270.018000
432019-02-260.021000
442017-09-260.018000
452018-07-270.019000
462018-10-290.020000
472020-11-250.016000
482022-06-280.016000
492025-05-280.029000
502015-06-250.015000
512017-01-260.017000
522026-07-290.031000
532025-06-260.028000
542016-04-260.018000
552023-11-280.025000
562019-08-280.021000
572019-06-260.021000
582021-06-280.013000
592023-09-270.023000
602015-10-270.019000
612018-11-280.021000
622025-02-260.027000
632025-09-260.028000
642021-09-280.012000
652024-09-260.027000
662025-08-270.029000
672020-03-270.020000
682020-06-260.017000
692022-08-290.019000
702022-11-280.020000
712017-11-270.018000
722019-07-290.022000
732020-05-270.019000
742022-01-270.006000
752015-12-280.255000
762017-10-260.018000
772020-12-160.016000
782021-08-270.013000
792025-01-290.028000
802026-02-250.028000
812026-05-270.031000
822017-03-280.020000
832017-06-270.018000
842019-05-290.023000
852019-11-260.023000
862023-08-290.023000
872024-03-260.026000
882015-05-260.015000
892016-07-260.019000
902018-01-290.017000
912018-05-290.020000
922022-10-270.020000
932024-01-290.024000
942016-05-250.018000
952017-08-280.018000
962022-12-150.023000
972023-05-260.022000
982026-06-260.030000
992019-03-270.022000
1002022-09-280.019000
1012020-07-290.017000
1022022-05-260.016000
1032018-03-270.019000
1042018-04-260.017000
1052018-06-270.019000
1062021-11-260.013000
1072024-07-290.027000
1082015-09-250.019000
1092016-01-260.016000
1102016-06-270.018000
1112018-08-290.020000
1122022-02-240.012000
1132023-01-270.020000
1142024-10-290.027000
1152025-12-160.030000
1162015-07-280.016000
1172015-11-240.019000
1182017-05-250.018000
1192025-07-290.029000
1202021-04-280.011000
1212021-12-150.270000
1222020-01-290.019000
1232020-04-280.019000
1242021-03-290.015000
1252023-12-140.026000
1262024-12-160.027000
1272025-03-270.028000
1282018-02-260.019000
1292018-12-270.025000
1302026-03-270.032000
1312026-04-280.031000
1322017-02-230.018000
1332016-02-240.016000
1342016-11-250.018000
1352021-05-260.012000
1362023-10-270.024000