f/overrides/event-backup/jemvx-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

3.2 KiB

1DateDividends
22013-07-310.035000
32015-12-290.047000
42016-01-270.027000
52017-04-260.035000
62020-11-250.025000
72022-05-260.027000
82023-08-290.037000
92015-09-280.036000
102021-11-260.029000
112017-09-270.036000
122019-10-290.034000
132021-05-260.028000
142015-01-290.013000
152015-04-280.097000
162016-07-270.021000
172019-02-260.032000
182023-05-260.031000
192024-07-290.034000
202026-04-280.052000
212014-02-280.031000
222015-10-280.014000
232016-12-280.090000
242018-11-280.036000
252016-04-270.046000
262018-01-310.018000
272018-04-260.051000
282019-03-270.034000
292019-05-290.028000
302021-07-280.029000
312025-05-280.035000
322012-12-310.092000
332016-03-290.033000
342020-08-270.013000
352024-08-280.030000
362026-03-270.035000
372025-06-260.036000
382014-12-300.106000
392017-05-260.036000
402017-06-280.038000
412017-08-290.036000
422018-10-290.043000
432019-01-290.026000
442019-11-260.033000
452013-11-290.039000
462015-07-290.035000
472021-02-240.025000
482021-12-290.032000
492025-01-290.042000
502025-10-290.037000
512013-08-300.028000
522013-09-300.033000
532022-06-280.031000
542025-03-270.037000
552016-09-280.025000
562021-01-270.024000
572023-07-270.030000
582024-10-290.033000
592026-02-250.032000
602014-03-310.032000
612014-06-300.013000
622017-01-270.021000
632019-08-280.032000
642022-07-270.033000
652014-10-310.066000
662016-10-270.027000
672018-03-270.028000
682018-07-270.037000
692018-09-260.033000
702024-02-270.029000
712026-07-290.039000
722013-12-310.064000
732019-07-290.038000
742020-01-290.031000
752020-03-270.035000
762020-04-280.033000
772024-01-290.033000
782026-06-260.037000
792013-02-280.029000
802016-02-250.028000
812020-02-260.037000
822020-06-260.007000
832020-07-290.030000
842017-10-270.032000
852019-06-260.028000
862019-12-270.039000
872023-04-260.016000
882012-11-300.036000
892013-06-280.035000
902025-11-250.037000
912021-03-290.027000
922022-01-270.027000
932022-10-270.037000
942024-03-260.031000
952024-05-290.034000
962024-06-260.033000
972013-10-310.042000
982021-04-280.035000
992022-04-270.035000
1002022-08-290.029000
1012023-02-240.031000
1022023-09-270.029000
1032023-12-270.032000
1042013-03-280.036000
1052014-07-310.050000
1062014-08-290.016000
1072017-03-290.026000
1082015-08-270.052000
1092022-03-290.026000
1102022-12-280.051000
1112025-09-260.015000
1122026-01-280.037000
1132019-09-260.036000
1142021-10-270.029000
1152022-02-240.025000
1162023-10-270.028000
1172012-08-310.035000
1182012-10-310.035000
1192018-05-290.025000
1202020-12-290.024000
1212025-04-280.023000
1222015-06-260.024000
1232023-06-280.029000
1242024-11-260.034000
1252024-12-270.039000
1262025-07-290.039000
1272013-05-310.033000
1282017-07-270.023000
1292018-12-270.023000
1302022-11-280.027000
1312023-01-270.026000
1322023-11-280.026000
1332022-09-280.024000
1342014-05-300.009000
1352016-08-290.025000
1362016-11-280.043000
1372020-05-270.031000
1382021-06-280.029000
1392021-08-270.033000
1402021-09-280.029000
1412025-12-290.042000
1422026-05-270.033000
1432015-05-270.024000
1442015-11-250.041000
1452017-12-270.044000
1462018-02-260.035000
1472019-04-260.031000
1482023-03-290.030000
1492024-09-260.027000
1502016-05-260.033000
1512024-04-260.032000
1522025-08-270.039000
1532020-10-280.031000
1542013-04-300.070000
1552014-04-300.023000
1562016-06-280.025000
1572017-02-240.036000
1582017-11-280.029000
1592018-08-290.039000
1602020-09-280.028000
1612012-09-280.038000
1622018-06-270.002000
1632025-02-260.037000