f/overrides/event-backup/btmix-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

2.6 KiB

1DateDividends
22016-12-270.019000
32017-04-250.014000
42020-03-260.015000
52021-02-250.014000
62024-04-250.025000
72016-06-270.014000
82022-05-240.012000
92022-10-250.019000
102023-09-250.023000
112024-12-270.026000
122025-11-250.028000
132026-02-250.028000
142017-10-250.016000
152022-08-230.015000
162023-08-240.022000
172024-11-270.029000
182025-02-260.031000
192025-08-260.027000
202018-01-250.011000
212017-01-250.010000
222019-12-260.019000
232016-01-250.008000
242021-05-250.011000
252023-02-240.021000
262024-05-280.027000
272018-10-250.016000
282024-08-260.026000
292025-10-270.028000
302018-04-250.017000
312022-06-230.011000
322021-03-250.009000
332018-07-250.016000
342020-10-260.012000
352022-04-250.010000
362017-05-250.014000
372016-08-250.013000
382018-03-260.013000
392023-07-250.024000
402023-12-280.028000
412024-09-240.027000
422025-05-270.027000
432016-07-250.012000
442018-05-250.016000
452018-11-260.017000
462020-08-250.014000
472021-12-280.010000
482022-01-250.007000
492016-10-250.012000
502024-03-260.028000
512024-06-250.026000
522025-04-250.026000
532017-07-250.015000
542022-07-250.013000
552019-04-250.020000
562022-12-280.022000
572024-01-260.021000
582024-07-250.027000
592025-06-240.028000
602015-09-250.006000
612023-11-270.025000
622025-07-280.028000
632025-12-290.030000
642020-12-280.011000
652020-09-250.014000
662021-11-240.008000
672024-10-250.028000
682020-01-270.012000
692016-03-280.010000
702017-06-260.013000
712019-08-260.015000
722021-07-270.010000
732021-10-260.009000
742021-12-160.001000
752022-11-230.015000
762015-10-260.015000
772019-05-280.018000
782023-06-260.022000
792026-06-260.027000
802018-02-260.016000
812022-02-240.010000
822025-01-280.025000
832025-09-250.027000
842026-03-270.030000
852020-06-260.014000
862019-03-250.016000
872018-06-250.016000
882021-01-260.009000
892021-09-240.008000
902026-05-270.030000
912019-07-250.017000
922016-11-250.012000
932019-02-250.016000
942019-06-250.018000
952023-05-250.022000
962025-03-270.028000
972026-07-280.030000
982016-02-250.012000
992020-02-250.013000
1002020-11-240.012000
1012021-06-250.010000
1022022-09-230.015000
1032023-01-250.016000
1042016-05-250.011000
1052017-11-270.014000
1062019-10-250.014000
1072017-08-250.015000
1082023-03-270.022000
1092020-05-270.016000
1102019-01-250.013000
1112024-02-260.026000
1122017-02-270.014000
1132020-04-270.014000
1142017-09-250.014000
1152017-12-260.020000
1162018-08-270.018000
1172016-09-260.009000
1182026-01-280.024000
1192021-08-250.008000
1202016-04-250.012000
1212017-03-270.012000
1222018-09-250.018000
1232019-09-250.014000
1242026-04-270.026000
1252015-11-250.012000
1262021-04-260.010000
1272023-04-250.021000
1282019-11-250.014000
1292020-07-270.014000
1302022-03-250.009000
1312023-10-240.026000
1322015-12-280.020000