f/overrides/event-backup/csrsx-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

2.8 KiB

1DateDividends
22007-12-3112.268000
32015-03-310.378000
42004-12-235.230000
52018-06-291.271000
61998-03-230.470000
71998-12-011.870000
82015-09-300.448000
91992-09-220.400000
102014-09-300.411000
112000-12-150.830000
122001-03-220.470000
132010-04-300.002000
142020-03-310.387000
152021-09-300.335000
161994-06-210.400000
171996-09-230.470000
182011-12-150.430000
191997-09-230.470000
202011-03-310.249000
212007-06-290.534000
222020-09-300.344000
232023-06-300.490000
242025-03-310.434000
251997-12-232.770000
262002-09-170.560000
272008-03-310.430000
282008-12-190.658000
292010-03-310.296000
302012-09-280.310000
312017-06-301.261000
322019-03-290.499000
331993-06-280.400000
342006-06-230.560000
352022-12-082.240000
362026-03-310.461000
372011-09-300.292000
382024-06-280.510000
391999-06-240.470000
402000-03-230.470000
411994-09-200.400000
422002-06-210.190000
432012-12-134.606000
442019-09-300.412000
451992-01-020.430000
461992-04-010.400000
472022-06-301.345000
482023-09-290.404000
492012-03-300.334000
502021-12-092.348000
512003-12-181.040000
522003-12-232.130000
532024-03-280.438000
541993-03-220.400000
551996-06-240.470000
562016-12-085.862000
571993-12-281.990000
582009-12-170.352000
592008-09-300.481000
602016-03-310.407000
612025-12-080.471000
622001-06-210.520000
632007-09-280.455000
641999-12-160.570000
652007-03-300.463000
662008-06-300.452000
672010-09-300.289000
681994-12-270.460000
692001-12-210.760000
702005-06-240.560000
712019-11-054.871000
722019-12-180.421000
732022-03-310.358000
741996-12-271.020000
752000-06-230.470000
762024-12-040.499000
772002-03-220.560000
782022-09-300.454000
792005-03-180.560000
802005-12-235.615000
812013-06-280.462000
822017-12-063.559000
832020-12-100.509000
841995-06-200.430000
851995-09-190.430000
862011-06-300.221000
872018-03-290.404000
882009-06-300.323000
892015-12-102.813000
902017-03-310.509000
911992-06-220.400000
921993-09-210.400000
931998-09-240.470000
942009-09-300.297000
952016-06-302.145000
962016-09-300.438000
972021-06-300.278000
981999-09-240.470000
992015-06-305.786000
1002002-12-200.700000
1012004-03-190.560000
1022014-12-113.022000
1031997-06-240.470000
1042000-09-220.470000
1052013-09-300.384000
1062023-03-310.424000
1071997-03-250.470000
1082004-09-170.560000
1092001-09-210.520000
1102004-06-180.560000
1112005-09-270.560000
1122013-12-122.517000
1132014-03-310.382000
1142020-06-301.648000
1151992-12-210.400000
1161995-03-200.400000
1172006-09-280.560000
1182010-12-160.356000
1192017-09-290.393000
1201995-12-270.570000
1212003-06-200.560000
1222003-03-210.560000
1232006-12-227.900000
1242013-03-280.346000
1252025-09-300.457000
1262026-06-300.548000
1271999-03-240.470000
1282002-09-200.560000
1292014-06-300.854000
1302018-09-280.687000
1312023-12-070.906000
1322024-09-300.379000
1331991-10-010.400000
1342010-06-300.282000
1351998-06-240.470000
1362003-09-190.560000
1372009-03-310.426000
1382012-06-290.405000
1391994-03-210.400000
1401996-03-250.470000
1412021-03-310.272000
1422006-03-240.560000
1432018-12-061.415000
1442019-06-284.397000
1452025-06-300.610000