f/overrides/event-backup/gaidx-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

1.5 KiB

1DateDividends
22011-06-210.036000
32012-12-210.217000
42018-09-120.029000
52019-03-120.013000
62022-12-230.288000
72005-09-260.033000
82009-06-230.047000
92014-06-170.039000
102015-12-210.741000
112008-03-250.052000
122015-09-150.033000
132026-06-240.036000
142006-06-260.045000
152007-12-260.113000
162010-12-290.077000
172012-09-110.031000
182020-09-100.315000
192026-03-250.017000
202006-12-280.263000
212007-01-030.106000
222013-06-250.031000
232013-12-200.282000
242015-03-170.024000
252009-12-220.262000
262014-03-180.024000
272017-09-140.033000
282019-09-120.032000
292023-12-220.555000
302024-06-130.027000
312025-12-230.980000
322006-09-260.043000
332008-06-240.047000
342008-12-220.065000
352011-03-220.014000
362017-03-140.016000
372018-12-201.080000
382009-09-220.020000
392016-03-150.017000
402019-12-231.058000
412020-12-230.264000
422025-03-130.009000
432010-09-240.024000
442011-12-210.093000
452017-12-201.447000
462024-09-120.025000
472025-09-110.025000
482007-06-260.108000
492007-09-250.049000
502016-06-140.059000
512016-09-150.028000
522022-06-090.030000
532023-06-150.034000
542010-06-220.039000
552014-12-220.654000
562018-06-120.056000
572022-09-150.017000
582018-03-130.015000
592005-03-280.036000
602012-06-190.052000
612013-09-260.027000
622025-06-120.032000
632021-12-230.712000
642024-12-231.658000
652005-06-270.048000
662005-12-290.286000
672008-09-230.048000
682009-03-240.020000
692014-09-180.039000
702015-06-160.058000
712021-09-090.020000
722006-03-270.039000
732011-09-200.032000
742013-03-190.025000
752016-12-190.957000
762017-06-130.053000
772019-06-110.047000