f/overrides/event-backup/gsk-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

2.6 KiB

1DateDividends
21990-09-240.317000
32013-02-200.689000
42017-11-090.504000
52021-05-200.527000
62024-05-160.376000
71989-04-070.094500
82001-08-010.283000
92003-10-290.300000
102008-07-300.519000
112009-11-040.490000
122010-07-280.457000
132014-11-050.613000
142026-08-140.452000
151993-09-240.058000
162014-08-060.648000
172015-08-120.593000
182016-05-110.554000
192017-08-090.496000
202022-11-170.317000
212023-05-180.348000
221996-03-220.580000
232010-05-050.460000
241993-03-050.305000
251994-09-230.695000
261999-03-030.595000
272005-11-020.355000
282006-11-010.451000
292019-05-160.495000
302021-02-180.628000
312021-11-180.523000
321990-03-300.151000
332023-11-160.340000
342011-05-040.526000
352019-11-140.489000
362023-08-170.361000
371991-09-160.383500
382004-08-040.366000
392007-05-020.481000
402007-08-010.495000
412025-05-160.429000
422003-02-190.465000
432006-02-150.488000
442011-02-090.615000
452013-11-130.616000
462017-02-220.576000
471995-09-220.774000
482016-11-020.464000
491994-03-140.332000
502007-02-140.552000
512018-05-100.530000
522005-05-110.380000
532000-12-270.742000
542006-08-020.406000
552020-11-120.496000
561992-09-210.580000
572002-02-200.715000
582007-10-310.533000
591988-04-180.073500
602002-10-300.308000
612004-05-120.353000
622018-08-090.501000
632024-08-160.386000
641999-08-110.539000
652000-03-010.785000
662012-02-150.821000
672015-02-180.695000
682015-05-130.577000
691996-08-160.584000
702017-05-100.488000
712003-07-300.286000
722005-02-160.444000
732008-02-130.627000
742021-08-190.530000
752023-02-230.340000
762026-02-200.486000
771997-03-190.727000
782002-07-310.311000
792009-02-110.495000
802012-11-140.579000
812014-05-140.640000
822016-08-100.499000
832020-08-130.491000
842022-05-190.350000
852001-10-310.284000
862002-05-010.555000
872010-02-100.574000
882014-02-190.750000
891989-10-050.223500
902016-02-171.252000
911991-03-150.182500
922006-05-100.393000
932009-07-290.461000
942011-11-020.543000
951987-05-150.042000
961997-08-130.491000
971988-11-180.061000
982025-08-150.428000
992018-02-220.638000
1002020-05-140.472000
1012022-08-180.391000
1022024-02-220.406000
1032025-11-140.417000
1042013-08-070.553000
1052003-05-070.317000
1062012-08-080.528000
1072019-08-080.464000
1082025-02-210.401000
1091992-02-280.281000
1102001-05-020.287000
1112008-10-290.475000
1122010-10-270.507000
1132015-11-100.582000
1141998-08-120.496000
1152022-02-240.622000
1162011-08-030.521000
1172009-04-290.409000
1182013-05-080.550000
1191998-03-040.652000
1202005-08-030.348000
1212024-11-150.389000
1221995-02-240.385000
1232018-11-150.491000
1242019-02-210.597000
1252020-02-200.599000
1262026-05-150.461000
1271987-11-200.142000
1282004-11-030.365000
1292004-02-180.520000
1302008-04-300.519000
1312012-05-090.549000
1322000-08-090.502000