f/overrides/event-backup/hiadx-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
22003-12-290.230000
32023-08-252.033000
41996-02-290.410000
51996-10-310.300000
61997-12-311.950000
72000-12-284.280000
82013-08-130.562000
92013-12-200.640000
102021-12-220.606000
111994-08-310.410000
122015-08-193.639000
131996-08-300.350000
141996-09-300.270000
151997-02-284.810000
161999-02-268.020000
172009-08-270.024000
182011-12-280.401000
191994-05-310.400000
201996-03-290.200000
211995-04-280.190000
221995-07-310.100000
231997-03-310.190000
242005-12-190.348000
252015-12-220.484000
262023-12-220.344000
272024-12-200.734000
282008-06-230.022000
292020-12-210.369000
302024-08-231.393000
311995-02-280.210000
321995-08-310.460000
332007-12-170.397000
342014-08-273.391000
352016-12-210.409000
362018-12-210.405000
371995-10-300.140000
382000-06-2819.510000
392003-06-260.016000
401994-11-300.430000
411995-06-300.230000
421996-01-303.050000
431996-07-310.210000
442012-08-170.018000
452016-08-252.685000
462017-12-200.511000
472021-08-271.024000
481994-04-280.200000
491994-12-300.330000
501995-03-310.190000
511996-04-300.200000
522004-06-290.006000
532006-12-130.398000
541994-03-310.070000
551994-09-300.160000
561996-06-280.240000
571996-12-310.230000
582005-06-220.049000
592007-06-190.011000
602009-12-170.334000
612011-08-260.015000
622014-12-220.628000
632017-08-241.532000
642018-08-232.610000
652019-08-272.774000
662022-12-210.425000
671994-07-290.100000
681994-10-310.230000
691995-05-310.440000
701996-05-310.400000
711997-01-310.300000
721997-04-300.270000
731998-12-313.160000
742008-12-160.419000
752019-12-230.378000
761995-11-290.470000
771996-11-290.370000
781998-02-277.350000
792001-12-282.850000
802004-12-150.264000
812012-12-270.484000
822020-08-271.108000
832025-12-190.731000
841994-06-300.220000
851995-01-310.480000
861995-09-290.230000
871995-12-290.190000
881999-12-283.970000
892006-06-220.008000
902022-08-262.666000
912025-08-253.550000