f/overrides/event-backup/mfbkx-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

3.4 KiB

1DateDividends
22025-03-310.050000
32018-03-290.037000
42018-10-310.039000
52019-04-300.042000
62021-06-300.036000
72022-11-300.037000
82016-03-310.041000
92018-01-310.038000
102022-04-290.034000
112025-09-300.051000
122015-12-310.042000
132016-01-290.042000
142020-02-280.039000
152024-02-290.048000
162023-11-300.046000
172024-07-310.049000
182025-06-300.051000
192013-06-280.042000
202013-12-310.044000
212020-03-310.039000
222020-12-310.035000
232023-10-310.045000
242022-01-310.032000
252023-07-310.042000
262024-04-300.049000
272013-05-310.042000
282015-03-310.045000
292016-05-310.041000
302017-12-290.038000
312019-01-310.041000
322014-03-310.047000
332018-08-310.039000
342021-09-300.036000
352025-05-300.050000
362026-01-300.051000
372014-08-290.045000
382019-06-280.042000
392020-04-300.039000
402020-09-300.037000
412024-11-290.049000
422013-11-290.080000
432015-10-300.043000
442018-05-310.038000
452018-09-280.039000
462022-12-060.011000
472014-02-280.047000
482015-06-300.044000
492021-07-300.036000
502025-01-310.049000
512013-10-310.043000
522017-04-280.040000
532024-09-300.050000
542022-07-290.035000
552025-11-280.051000
562014-01-310.045000
572015-05-290.044000
582017-07-310.041000
592020-10-300.036000
602022-06-300.036000
612018-02-280.038000
622019-08-300.042000
632024-10-310.050000
642024-12-310.049000
652015-02-270.047000
662016-02-290.042000
672018-12-310.042000
682019-07-310.042000
692023-05-310.042000
702026-02-270.050000
712017-01-310.042000
722018-07-310.039000
732020-01-310.038000
742021-02-260.036000
752021-05-280.035000
762012-09-280.052000
772013-03-280.043000
782016-10-310.042000
792016-11-300.042000
802026-04-300.047000
812013-08-300.042000
822014-04-300.047000
832014-06-300.046000
842017-11-300.039000
852020-08-310.038000
862016-12-300.042000
872017-05-310.039000
882023-01-310.040000
892025-07-310.051000
902025-10-310.051000
912024-06-280.049000
922014-10-310.045000
932021-04-300.036000
942022-08-310.037000
952022-09-300.037000
962023-04-280.042000
972013-09-300.042000
982014-07-310.045000
992017-08-310.041000
1002021-08-310.036000
1012023-02-280.040000
1022018-06-290.039000
1032019-03-290.042000
1042020-06-300.039000
1052021-03-310.036000
1062025-12-310.051000
1072026-03-310.047000
1082013-02-280.045000
1092018-11-300.040000
1102019-02-280.041000
1112023-03-310.041000
1122024-05-310.049000
1132012-11-300.048000
1142013-07-310.042000
1152016-08-310.041000
1162019-09-300.042000
1172023-12-290.046000
1182015-09-300.044000
1192016-07-290.041000
1202017-03-310.041000
1212017-06-300.039000
1222024-03-280.048000
1232026-07-310.050000
1242015-01-300.047000
1252015-07-310.044000
1262021-11-300.033000
1272021-12-310.032000
1282022-02-280.033000
1292016-06-300.041000
1302019-11-290.039000
1312022-10-310.036000
1322022-05-310.035000
1332026-06-300.049000
1342014-05-300.046000
1352017-02-280.042000
1362018-04-300.038000
1372020-07-310.039000
1382021-10-290.036000
1392021-01-290.036000
1402022-12-300.038000
1412024-01-310.048000
1422024-08-300.049000
1432026-05-290.049000
1442015-04-300.045000
1452019-05-310.042000
1462019-12-310.038000
1472020-11-300.035000
1482023-08-310.044000
1492017-10-310.039000
1502020-05-290.039000
1512023-09-290.045000
1522012-08-310.052000
1532012-12-310.047000
1542014-12-310.047000
1552016-04-290.041000
1562016-09-300.041000
1572025-02-280.050000
1582014-09-300.045000
1592017-09-290.041000
1602021-12-070.454000
1612022-03-310.033000
1622025-04-300.050000
1632025-08-290.051000
1642013-01-310.047000
1652013-04-300.044000
1662015-08-310.044000
1672019-10-310.040000
1682020-12-080.144000
1692023-06-300.042000
1702012-07-310.054000
1712012-10-310.051000
1722014-11-280.047000
1732015-11-300.043000
1742015-12-100.036000