f/overrides/event-backup/iez-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
22014-06-240.228000
32022-06-090.037000
42023-12-200.064000
52008-12-230.047000
62011-09-230.044000
72013-03-250.080000
82014-12-240.234000
92016-09-260.093000
102017-12-190.088000
112022-03-240.026000
122009-09-220.055000
132009-12-230.135000
142017-09-260.976000
152019-12-160.124000
162020-09-230.058000
172021-09-240.023000
182024-03-210.087000
192011-03-250.031000
202012-09-250.075000
212016-12-210.080000
222017-06-270.080000
232023-03-230.065000
242023-06-070.012000
252014-09-240.202000
262016-06-210.099000
272013-06-260.124000
282019-03-200.109000
292020-03-250.116000
302007-09-250.006000
312010-12-220.129000
322015-06-240.201000
332020-06-150.034000
342024-06-110.092000
352025-09-160.111000
362008-09-240.003000
372012-06-190.083000
382016-03-230.141000
392018-06-260.085000
402019-06-170.112000
412021-06-100.018000
422021-12-130.033000
432006-09-260.004000
442009-03-250.067000
452020-12-140.026000
462021-03-250.080000
472010-06-240.054000
482019-09-240.117000
492017-03-240.082000
502018-12-170.089000
512010-03-250.063000
522015-09-250.202000
532006-12-200.013000
542010-09-230.034000
552018-03-220.107000
562025-03-180.090000
572007-03-230.063000
582009-06-240.054000
592013-12-230.136000
602015-12-240.182000
612022-09-260.036000
622006-06-220.014000
632011-12-220.039000
642013-09-240.146000
652015-03-250.272000
662023-09-260.071000
672024-09-250.093000
682024-12-170.077000
692008-03-250.002000
702012-12-190.107000
712022-12-130.039000
722025-06-160.104000
732025-12-160.084000
742011-06-240.051000
752012-03-260.059000
762014-03-250.175000
772018-09-260.088000
782026-03-170.064000
792026-06-150.085000
802007-06-280.020000
812008-06-250.027000