f/overrides/event-backup/ilcb-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

1.8 KiB

1DateDividends
22015-03-250.120250
32016-09-260.167500
42019-06-170.421500
52024-12-170.272000
62018-09-260.204500
72005-09-260.063750
82006-09-270.070000
92006-12-210.083500
102009-06-230.064750
112011-03-250.076250
122016-12-210.213000
132006-03-270.057000
142009-09-230.076750
152009-12-240.091750
162011-06-230.092000
172012-06-190.097750
182015-12-290.136500
192018-06-260.186000
202020-09-230.166250
212022-03-240.193000
222025-03-180.244000
232025-09-160.255000
242004-09-270.045250
252007-12-270.104750
262022-09-260.265000
272023-03-230.214000
282021-06-100.152000
292023-06-070.172000
302008-09-250.091000
312013-06-260.116750
322014-03-250.131250
332014-09-240.143250
342017-03-240.156750
352018-03-220.164000
362024-09-250.280000
372025-06-160.241000
382026-06-150.246000
392017-06-270.180750
402008-03-250.082250
412009-03-250.095250
422010-03-250.071500
432013-03-250.114000
442013-09-240.129250
452014-12-240.164000
462005-06-210.045000
472016-03-230.133250
482021-09-240.218000
492022-06-090.158000
502008-06-240.087500
512011-09-260.094250
522012-03-260.084250
532013-12-230.150500
542020-06-150.139500
552015-09-250.152000
562016-06-210.140000
572026-03-170.211000
582008-12-240.088250
592012-09-250.118000
602015-06-240.149750
612020-03-250.193250
622020-12-140.184000
632022-12-130.252000
642010-09-240.080250
652010-12-230.091500
662017-09-260.186500
672023-12-200.283000
682004-12-270.051500
692005-03-280.054500
702005-12-230.077500
712006-06-230.050500
722015-12-240.168250
732023-09-260.273000
742025-12-160.305000
752011-12-220.116500
762014-06-240.134500
772019-03-200.198000
782019-09-240.198500
792024-03-210.210000
802024-06-110.203000
812019-12-160.217750
822021-03-250.162750
832007-03-260.073250
842007-06-290.076500
852007-09-260.079000
862012-12-190.141250
872017-12-190.196250
882018-12-170.219500
892010-06-230.074750
902021-12-130.236000