f/overrides/event-backup/abimx-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

2.1 KiB

1DateDividends
22019-12-310.027000
32026-01-300.036000
42021-01-290.026000
52021-05-280.022000
62021-06-300.022000
72017-11-300.019000
82018-02-280.023000
92024-05-310.032000
102021-07-300.023000
112022-11-300.027000
122018-03-290.026000
132019-04-300.029000
142020-11-300.024000
152023-11-300.027000
162023-12-290.029000
172025-04-300.033000
182018-01-310.026000
192021-09-300.021000
202018-06-290.025000
212023-09-290.028000
222025-08-290.036000
232019-11-290.028000
242020-02-280.025000
252024-07-310.030000
262018-05-310.025000
272019-06-280.027000
282020-05-290.026000
292024-10-310.032000
302019-03-290.030000
312021-04-300.025000
322024-03-280.030000
332025-06-300.032000
342025-11-280.032000
352019-01-310.029000
362022-03-310.025000
372020-03-310.026000
382020-04-300.026000
392021-10-290.023000
402022-07-290.027000
412026-03-310.034000
422021-12-310.023000
432023-01-310.029000
442024-11-290.031000
452025-02-280.030000
462025-09-300.032000
472018-04-300.024000
482019-09-300.026000
492021-03-310.025000
502023-06-300.029000
512017-10-310.020000
522022-01-310.024000
532022-02-280.022000
542026-05-290.036000
552023-02-280.027000
562022-06-300.025000
572018-12-310.028000
582019-05-310.032000
592024-09-300.028000
602025-12-310.035000
612026-06-300.035000
622018-07-310.025000
632021-08-310.021000
642021-11-300.023000
652022-10-310.025000
662023-08-310.029000
672024-06-280.027000
682017-09-290.006000
692020-09-300.026000
702022-05-310.025000
712019-08-300.031000
722020-10-300.027000
732024-02-290.028000
742018-09-280.023000
752018-11-300.028000
762023-07-310.027000
772021-02-260.023000
782022-12-300.028000
792019-07-310.029000
802019-10-310.029000
812025-01-310.035000
822025-10-310.037000
832026-04-300.039000
842018-08-310.029000
852022-04-290.026000
862022-08-310.027000
872023-05-310.030000
882023-10-310.027000
892018-10-310.027000
902020-12-310.027000
912024-01-310.030000
922024-04-300.029000
932025-07-310.032000
942020-06-300.026000
952020-07-310.028000
962025-05-300.035000
972024-12-310.032000
982020-08-310.025000
992017-12-290.023000
1002020-01-310.030000
1012025-03-310.032000
1022026-02-270.032000
1032019-02-280.028000
1042022-09-300.027000
1052023-03-310.032000
1062023-04-280.028000
1072024-08-300.032000