f/overrides/event-backup/asddx-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
22025-12-310.040000
32022-11-300.027000
42024-03-280.039000
52025-05-300.042000
62024-11-290.040000
72020-11-300.011000
82023-07-310.033000
92024-01-310.037000
102021-10-290.013000
112023-11-300.038000
122023-01-310.026000
132023-04-280.030000
142024-12-310.041000
152021-05-280.017000
162022-09-300.023000
172022-10-310.023000
182026-01-300.037000
192018-07-310.022000
202025-08-290.041000
212018-12-310.024000
222020-04-300.018000
232021-12-070.039000
242025-02-280.040000
252020-06-300.014000
262017-10-310.019000
272017-12-290.020000
282021-01-290.008000
292023-02-280.028000
302024-08-300.043000
312017-08-310.019000
322020-08-310.015000
332022-12-300.032000
342023-10-310.037000
352018-06-290.023000
362018-09-280.022000
372019-12-310.019000
382021-07-300.014000
392025-03-310.038000
402019-04-300.026000
412019-06-280.023000
422021-03-310.016000
432023-05-310.033000
442024-06-280.037000
452019-09-300.022000
462021-11-300.013000
472022-03-310.012000
482022-02-280.014000
492024-05-310.041000
502026-02-270.037000
512023-06-300.037000
522024-02-290.036000
532025-04-300.041000
542026-06-300.035000
552019-11-290.020000
562020-09-300.017000
572021-12-310.018000
582025-07-310.039000
592025-09-300.037000
602018-10-310.025000
612019-08-300.026000
622020-01-310.018000
632021-02-260.012000
642022-04-290.014000
652023-12-290.040000
662024-10-310.039000
672025-01-310.042000
682019-07-310.024000
692020-03-310.015000
702020-12-310.014000
712026-05-290.036000
722024-07-310.040000
732018-08-310.024000
742019-05-310.027000
752020-10-300.017000
762022-07-290.021000
772017-11-300.019000
782018-02-280.020000
792018-05-310.022000
802023-08-310.036000
812019-10-310.023000
822020-02-280.017000
832021-06-300.018000
842025-11-280.034000
852017-09-290.019000
862019-01-310.026000
872021-08-310.015000
882022-06-300.018000
892023-03-310.035000
902018-11-300.028000
912022-08-310.020000
922024-09-300.036000
932023-09-290.037000
942018-03-290.028000
952021-04-300.017000
962025-10-310.040000
972020-07-310.014000
982022-01-310.014000
992026-07-310.038000
1002018-01-310.020000
1012025-06-300.038000
1022026-03-310.036000
1032019-03-290.027000
1042021-09-300.014000
1052022-05-310.018000
1062018-04-300.021000
1072026-04-300.037000
1082019-02-280.026000
1092020-05-290.015000
1102024-04-300.039000