f/overrides/event-backup/disvx-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

3.1 KiB

1DateDividends
22026-06-290.417000
32005-11-300.027000
42005-12-300.028000
52008-01-310.033000
62008-08-290.028000
72008-10-310.036000
82008-12-100.059000
92009-02-270.022000
102005-03-310.020000
112011-06-080.199000
122013-12-110.500000
132008-06-300.029000
142026-03-300.041000
152004-02-270.014000
162004-07-300.017000
172008-03-310.032000
182009-08-310.022000
192018-12-170.884000
202021-12-130.618000
212025-03-280.031000
222003-10-310.013000
232004-12-290.018000
242007-10-310.041000
252021-09-290.069000
262025-09-290.266000
272019-09-270.081000
282003-04-300.020000
292003-08-290.010000
302006-02-280.026000
312009-03-310.027000
322009-06-300.023000
332015-06-080.081000
342017-06-290.058000
352020-06-290.037000
362023-09-280.124000
372006-07-310.038000
382007-08-310.039000
392008-02-290.032000
402012-12-120.337000
412005-09-080.054000
422005-12-190.950000
432008-12-310.033000
442009-07-310.021000
452023-03-300.018000
462010-09-080.002000
472014-12-150.579000
482015-09-090.051000
492016-09-290.030000
502022-06-290.129000
512022-12-120.177000
522007-07-310.039000
532003-11-260.013000
542004-06-080.110000
552004-09-080.050000
562005-06-080.181000
572005-08-310.021000
582006-01-310.027000
592006-10-310.038000
602008-11-280.028000
612016-12-140.778000
622022-09-290.129000
632004-06-300.018000
642003-12-300.019000
652005-10-310.022000
662008-09-300.029000
672013-03-080.004000
682019-12-160.551000
692020-09-290.023000
701999-12-200.203000
712011-09-080.051000
722025-06-270.450000
731995-11-270.049000
742004-10-290.016000
752006-08-310.035000
762006-09-290.035000
772006-12-181.248000
782018-09-270.100000
792020-12-140.293000
802005-03-080.004000
812009-04-300.025000
822016-06-290.225000
831995-12-270.005000
842004-12-200.527000
852006-04-280.029000
862008-04-300.020000
872004-08-310.019000
882006-06-300.035000
892007-03-300.038000
902009-11-300.021000
912009-12-310.021000
922023-06-290.282000
932021-06-290.048000
942003-05-300.018000
952007-11-300.035000
962009-01-300.022000
972013-06-100.228000
982017-09-280.070000
992017-12-141.194000
1002019-06-270.137000
1012024-06-270.250000
1022003-06-300.015000
1032005-04-290.018000
1042023-12-110.398000
1052005-01-310.020000
1062005-07-290.020000
1072007-05-310.041000
1082010-06-080.139000
1092014-09-090.074000
1102025-12-101.473000
1112022-03-300.017000
1122014-06-090.081000
1132024-09-270.242000
1142005-09-300.020000
1152008-07-310.030000
1162003-03-310.023000
1172003-07-310.015000
1182003-12-220.274000
1192004-03-310.016000
1202004-04-300.014000
1212004-05-270.013000
1222006-05-310.036000
1232012-09-100.042000
1242021-03-300.017000
1252024-03-270.019000
1261997-12-220.397000
1272000-12-180.447000
1282005-06-300.019000
1292006-03-310.034000
1302006-12-290.036000
1312012-06-080.186000
1322024-12-100.489000
1332007-02-280.036000
1342007-04-300.040000
1352007-06-290.037000
1362007-09-280.036000
1372008-05-300.026000
1382009-05-290.024000
1392009-09-300.021000
1402002-12-160.147000
1412003-09-300.015000
1422005-02-280.016000
1432005-05-310.020000
1442015-12-150.524000
1451996-12-270.421000
1462001-12-170.178000
1472004-01-300.014000
1482004-11-300.019000
1492007-01-310.036000
1502009-10-300.021000
1512010-12-090.415000
1522004-09-300.017000
1532007-12-191.573000
1542006-11-300.035000
1552007-12-310.037000
1562011-12-120.405000
1572016-03-300.079000
1581998-12-210.308000