f/overrides/event-backup/asa-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

2.7 KiB

1DateDividends
22001-08-150.050000
32002-08-140.050000
42007-11-200.666667
51985-08-120.166667
61997-02-190.100000
71996-02-140.166667
82002-11-130.050000
92005-05-170.066667
102005-11-220.233333
112015-05-110.020000
122018-05-100.020000
131986-08-140.166667
141990-11-090.416667
152003-05-210.050000
161997-11-120.100000
171998-11-100.066667
181999-08-180.050000
192000-08-150.050000
202003-11-120.050000
212008-05-210.100000
221985-11-130.250000
231986-11-130.500000
242020-11-130.010000
252017-11-100.020000
262018-11-090.010000
272019-05-090.010000
281995-05-150.166667
291996-05-150.100000
302003-02-110.050000
311983-05-090.250000
321991-05-130.250000
331997-08-130.100000
341994-05-160.166667
352001-05-160.050000
362007-05-160.100000
371988-05-130.250000
381989-11-100.416667
392004-05-190.050000
402010-11-170.320000
412023-05-050.010000
421992-05-210.166667
431996-11-130.100000
441991-11-150.250000
451997-05-140.100000
462000-11-150.050000
472009-05-200.033333
482026-05-010.040000
491984-11-140.250000
501989-08-140.250000
512004-11-170.033333
522016-05-110.020000
531987-11-120.833333
542004-02-180.050000
551983-11-100.583333
561991-02-150.250000
572012-11-150.350000
581986-02-130.166667
591989-02-100.250000
601992-08-140.166667
611993-05-210.166667
622019-11-080.010000
631984-02-060.250000
641988-11-230.291667
652001-11-200.116667
662003-11-140.066667
672015-11-120.020000
682024-11-130.020000
691991-08-160.250000
701993-02-120.166667
711998-02-180.066667
721998-05-200.066667
732002-05-150.050000
741987-05-140.166667
751993-08-160.166667
762002-02-130.050000
772003-08-130.050000
782004-08-180.050000
792008-11-250.566667
802012-05-160.030000
811985-02-130.166667
821992-11-120.166667
831985-05-130.166667
841988-11-090.291667
851995-02-130.166667
862006-11-210.233333
872016-11-100.020000
882022-11-100.010000
891982-02-100.333333
901984-05-070.250000
911982-08-090.250000
922010-05-190.020000
932013-05-140.030000
942017-05-100.020000
952021-11-120.010000
961989-05-150.250000
971996-08-140.100000
981983-08-110.250000
991993-11-190.166667
1002006-05-240.066667
1011987-02-120.166667
1021992-02-140.166667
1032014-05-130.020000
1042024-05-030.020000
1051988-08-150.250000
1061995-08-150.166667
1071990-08-130.250000
1081994-02-110.166667
1092000-02-160.050000
1102011-11-160.340000
1111982-11-090.333333
1121990-05-140.250000
1131999-05-190.050000
1141987-08-130.333333
1151994-08-150.166667
1161999-02-170.050000
1172000-05-170.050000
1181990-02-120.250000
1191998-08-190.066667
1202020-05-070.010000
1212023-11-140.010000
1222025-05-050.030000
1231994-11-180.166667
1242014-11-120.020000
1251995-11-140.166667
1262009-11-180.433333
1272011-05-190.020000
1281982-05-100.250000
1291983-02-110.250000
1302025-11-120.030000
1312001-02-280.050000
1322021-05-190.010000
1331988-02-120.250000
1341999-11-170.050000
1352013-11-150.150000
1362022-05-060.010000
1371984-08-090.250000
1381986-05-150.166667