f/overrides/event-backup/gmiax-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

1.6 KiB

1DateDividends
22009-03-240.029000
32013-09-260.031000
42025-12-230.867000
52007-03-270.014000
62009-12-220.232000
72019-09-120.038000
82020-12-230.275000
92026-03-250.012000
102009-09-220.028000
112006-03-270.048000
122010-09-240.032000
132011-09-200.039000
142012-09-110.037000
152021-06-100.012000
162023-12-220.588000
172005-06-270.056000
182010-04-290.041000
192015-09-150.036000
202015-12-210.789000
212018-06-120.061000
222021-12-230.626000
232026-06-240.032000
242006-09-260.054000
252007-09-250.063000
262011-06-210.042000
272013-03-190.029000
282013-12-200.373000
292014-12-190.590000
302017-03-140.020000
312020-09-100.298000
322006-12-280.262000
332014-09-180.042000
342017-06-130.057000
352023-09-140.006000
362024-06-130.019000
372014-03-180.020000
382010-03-230.013000
392014-06-170.042000
402017-09-140.041000
412017-12-201.214000
422019-03-120.016000
432005-03-280.044000
442007-12-260.111000
452008-06-240.060000
462011-03-220.019000
472011-12-210.136000
482019-12-231.026000
492022-09-150.017000
502007-01-030.096000
512018-09-120.036000
522008-12-220.071000
532012-12-210.177000
542015-03-170.025000
552024-12-231.461000
562008-09-230.057000
572016-09-150.034000
582016-12-190.873000
592019-06-110.050000
602020-06-110.018000
612005-09-260.044000
622016-06-140.061000
632010-06-220.048000
642009-06-230.054000
652015-06-160.059000
662021-09-090.018000
672005-12-290.230000
682022-12-230.312000
692025-09-110.023000
702010-12-290.084000
712007-06-260.122000
722018-03-130.017000
732018-12-201.151000
742023-06-150.030000
752025-06-120.028000
762006-06-260.055000
772012-06-190.065000
782013-06-250.036000
792014-02-180.007000
802016-03-150.022000
812022-06-090.031000
822024-09-120.023000
832008-03-250.062000