f/overrides/event-backup/dnl-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

1.4 KiB

1DateDividends
22024-12-260.136000
32014-03-240.115500
42015-03-230.040000
52016-03-210.047500
62016-06-200.242500
72018-03-200.039000
82021-12-270.002000
92022-03-250.370000
102013-09-230.137000
112014-09-220.149500
122017-09-260.240000
132018-09-250.135000
142008-12-220.519500
152010-06-280.187000
162019-03-260.037500
172026-03-260.020000
182026-06-250.170000
192010-03-290.240000
202011-09-260.201500
212013-03-220.070000
222013-06-240.323000
232017-03-270.075000
242023-12-220.105000
252025-09-250.170000
262013-12-240.054500
272014-12-190.070000
282015-06-220.239500
292017-06-260.167500
302025-12-260.234000
312009-09-210.333000
322014-06-230.252500
332022-09-260.405000
342025-03-260.115000
352006-12-210.170000
362009-06-220.252500
372012-09-240.222500
382015-09-210.155500
392020-09-220.235000
402022-06-240.655000
412024-03-220.165000
422009-12-210.100500
432024-09-250.155000
442015-12-210.013500
452016-09-260.197500
462021-06-240.200000
472023-03-270.160000
482023-06-260.290000
492012-06-250.286000
502019-09-240.140000
512007-12-170.490500
522010-09-200.146000
532020-03-240.122500
542021-03-250.157000
552010-12-220.129500
562011-06-220.257000
572011-12-210.095000
582019-06-240.277500
592021-09-240.240000
602023-09-250.115000
612012-03-260.102500
622020-06-230.150000
632025-06-250.330000
642018-12-240.133500
652019-12-230.179000
662020-12-210.162500
672024-06-250.285000
682024-12-310.086000
692011-03-210.187000
702012-12-240.105000
712016-12-230.091000
722017-12-260.067000
732018-06-250.321500
742022-12-230.124000