f/overrides/event-backup/bafzx-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

2.8 KiB

1DateDividends
22018-03-290.022000
32021-08-310.010000
42023-01-310.021000
52024-02-290.030000
62025-07-310.038000
72018-12-210.024000
82022-03-310.019000
92023-05-310.031000
102024-08-300.033000
112026-07-310.036000
122020-08-310.010000
132021-11-300.014000
142022-08-310.023000
152024-09-300.031000
162018-01-310.018000
172019-07-310.018000
182022-05-310.014000
192025-01-310.027000
202023-03-310.027000
212023-06-300.026000
222015-01-300.026000
232016-05-310.020000
242016-09-300.020000
252018-04-300.021000
262021-10-290.008000
272025-12-290.040000
282014-11-280.024000
292018-09-280.023000
302024-03-280.033000
312024-06-280.030000
322022-09-300.021000
332022-10-310.021000
342023-04-280.027000
352025-10-310.036000
362016-08-310.020000
372020-03-310.011000
382017-01-310.015000
392018-06-290.022000
402024-11-290.030000
412015-08-310.021000
422017-10-310.019000
432019-05-310.019000
442021-12-270.016000
452024-05-310.034000
462025-02-280.030000
472016-06-300.021000
482019-02-280.019000
492019-09-300.017000
502023-10-310.032000
512023-11-300.029000
522025-06-300.033000
532026-05-290.033000
542017-09-290.017000
552020-05-290.008000
562022-04-290.018000
572026-01-300.031000
582015-09-300.022000
592016-10-310.017000
602020-02-280.007000
612020-12-230.008000
622014-07-310.026000
632015-04-300.022000
642017-04-280.015000
652020-06-300.014000
662023-08-310.032000
672024-12-270.042000
682016-04-290.019000
692018-02-280.018000
702019-08-300.016000
712022-02-280.010000
722015-03-310.027000
732016-03-310.024000
742016-11-300.020000
752017-11-300.018000
762019-10-310.015000
772024-10-310.035000
782017-08-310.019000
792024-07-310.037000
802026-02-270.030000
812014-09-300.024000
822018-11-300.023000
832015-05-290.021000
842019-01-310.020000
852019-06-280.016000
862022-06-300.020000
872023-09-290.028000
882025-03-310.033000
892014-08-290.023000
902015-06-300.024000
912016-12-190.070000
922017-05-310.017000
932017-06-300.018000
942018-10-310.026000
952026-03-310.037000
962014-10-310.025000
972015-11-300.019000
982018-05-310.025000
992019-03-290.023000
1002020-07-310.004000
1012022-11-300.025000
1022025-08-290.034000
1032025-11-280.033000
1042016-07-290.016000
1052017-07-310.016000
1062017-12-270.021000
1072019-12-200.017000
1082020-09-300.012000
1092022-12-270.029000
1102023-02-280.023000
1112026-06-300.035000
1122015-07-310.022000
1132015-12-290.022000
1142019-11-290.015000
1152023-07-310.030000
1162024-01-310.031000
1172016-12-280.018000
1182017-02-280.014000
1192020-01-310.010000
1202020-11-300.006000
1212024-04-300.033000
1222014-12-230.107000
1232016-02-290.020000
1242018-07-310.025000
1252018-08-310.025000
1262015-02-270.024000
1272015-10-300.021000
1282015-12-210.038000
1292019-04-300.024000
1302021-06-300.012000
1312022-01-310.001000
1322022-07-290.017000
1332025-05-300.034000
1342026-04-300.032000
1352016-01-290.020000
1362017-03-310.017000
1372020-04-300.017000
1382023-12-260.033000
1392025-04-300.035000
1402025-09-300.038000
1412021-05-280.007000
1422021-07-300.005000
1432021-09-300.012000