f/overrides/event-backup/aggy-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
22016-12-050.219000
32025-10-280.160000
42025-08-260.165000
52026-04-270.160000
62022-12-230.130000
72025-02-250.155000
82019-04-230.135000
92022-04-250.080000
102017-03-270.115000
112017-04-240.120000
122024-12-260.185000
132026-02-240.140000
142017-10-240.125000
152023-03-270.130000
162016-07-250.115000
172025-06-250.150000
182020-08-250.098000
192020-09-220.100000
202023-01-250.125000
212024-08-270.155000
222025-09-250.155000
232026-06-250.150000
242018-06-250.143000
252020-04-210.125000
262026-07-280.170000
272023-04-240.130000
282023-06-260.130000
292019-03-260.125000
302022-02-220.078000
312021-12-270.083000
322024-09-250.160000
332019-08-270.135000
342021-03-250.090000
352019-01-220.128000
362022-10-250.115000
372023-08-250.138000
382025-11-240.170000
392026-01-270.160000
402026-05-260.170000
412016-01-250.120000
422017-01-230.112000
432022-11-230.120000
442024-03-220.150000
452016-05-230.110000
462017-06-260.115000
472017-09-260.128000
482021-02-220.098000
492022-03-250.078000
502023-11-240.150000
512016-08-220.115000
522016-11-210.115000
532018-12-240.159000
542019-09-240.129000
552020-05-260.110000
562021-05-240.090000
572021-11-230.083000
582024-11-250.160000
592017-11-210.120000
602018-11-200.140000
612026-03-260.175000
622024-10-280.160000
632015-08-240.120000
642018-05-220.135000
652024-01-250.150000
662025-07-280.165000
672022-05-240.085000
682023-07-250.135000
692020-01-210.128000
702022-09-260.115000
712018-03-200.120000
722019-02-190.117000
732019-11-250.129000
742021-10-250.083000
752024-06-250.155000
762025-03-260.180000
772015-09-210.120000
782016-10-240.110000
792025-12-260.179000
802022-01-250.078000
812016-02-220.115000
822020-07-280.095000
832021-01-250.098000
842021-09-240.085000
852023-09-250.140000
862024-05-240.150000
872025-01-280.160000
882025-05-270.175000
892017-05-220.115000
902020-12-080.272000
912018-10-230.140000
922023-10-250.140000
932017-07-240.115000
942018-04-240.125000
952018-02-200.115000
962018-08-210.145000
972015-10-260.120000
982016-06-200.115000
992019-10-220.129000
1002019-12-230.137000
1012021-08-250.085000
1022022-06-240.095000
1032016-04-250.110000
1042019-05-280.135000
1052017-12-260.110000
1062020-11-230.100000
1072021-04-260.090000
1082021-06-240.090000
1092023-02-220.125000
1102023-12-220.190000
1112017-02-170.115000
1122019-07-230.140000
1132024-02-230.150000
1142015-11-230.130000
1152020-12-210.108000
1162025-04-250.160000
1172015-12-210.130000
1182018-01-230.115000
1192021-12-070.021000
1202023-05-240.130000
1212018-07-240.145000
1222019-06-240.140000
1232021-07-260.090000
1242024-04-240.150000
1252020-06-230.103000
1262020-10-270.098000
1272022-08-250.105000
1282018-09-250.140000
1292020-02-250.125000
1302024-07-260.155000
1312016-12-230.112000
1322022-07-250.105000
1332017-08-210.120000
1342016-03-210.110000
1352016-09-260.115000
1362020-03-240.130000