f/overrides/event-backup/addvx-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
22016-01-280.023000
32016-04-290.023000
42017-09-290.022000
52021-08-310.015000
62025-03-310.034000
72013-12-060.086000
82014-03-310.026000
92017-03-310.022000
102018-03-290.026000
112020-11-300.018000
122022-06-300.021000
132022-07-290.023000
142023-08-310.032000
152015-12-310.073000
162018-01-310.019000
172020-03-310.018000
182020-04-300.017000
192022-05-310.021000
202026-03-310.034000
212018-09-280.026000
222019-01-310.027000
232024-10-310.036000
242026-02-270.035000
252014-06-300.025000
262015-03-310.022000
272017-10-310.022000
282024-07-310.037000
292021-05-280.017000
302022-10-310.024000
312025-04-300.037000
322025-08-290.037000
332026-01-300.037000
342013-10-310.024000
352016-08-310.023000
362018-06-290.026000
372018-12-310.013000
382023-06-300.032000
392025-09-300.034000
402014-01-310.025000
412014-12-310.024000
422017-08-310.023000
432020-06-300.015000
442025-07-310.035000
452013-09-300.023000
462015-07-310.022000
472017-06-300.020000
482023-10-310.033000
492016-03-310.023000
502019-06-280.025000
512019-11-290.024000
522022-08-310.021000
532024-11-290.037000
542025-02-280.036000
552015-10-300.021000
562023-04-280.029000
572025-10-310.037000
582024-05-310.036000
592024-09-300.033000
602018-05-310.026000
612019-04-300.027000
622019-12-310.023000
632023-07-310.029000
642024-02-290.034000
652014-02-280.025000
662014-08-290.025000
672021-04-300.019000
682023-03-310.033000
692013-11-290.024000
702018-11-300.027000
712021-09-300.015000
722021-11-300.016000
732023-12-290.036000
742014-10-310.024000
752015-02-270.021000
762016-09-300.022000
772017-12-290.022000
782016-12-300.028000
792018-10-310.030000
802020-02-280.021000
812013-12-310.025000
822015-06-300.022000
832016-01-290.023000
842016-06-300.023000
852016-11-300.022000
862023-01-310.027000
872024-08-300.039000
882025-01-310.037000
892019-05-310.029000
902021-12-070.107000
912022-02-280.017000
922015-11-300.022000
932016-02-290.023000
942019-10-310.025000
952020-01-310.023000
962021-02-260.015000
972024-03-280.034000
982016-05-310.023000
992019-08-300.028000
1002020-12-310.019000
1012022-04-290.019000
1022023-02-280.028000
1032015-01-300.022000
1042017-11-300.023000
1052022-03-310.016000
1062023-05-310.031000
1072025-12-310.038000
1082021-06-300.017000
1092022-11-300.027000
1102024-01-310.033000
1112015-04-300.022000
1122019-02-280.019000
1132020-09-300.016000
1142020-10-300.019000
1152023-11-300.034000
1162024-06-280.034000
1172024-12-310.037000
1182014-05-300.026000
1192014-09-300.025000
1202015-05-290.022000
1212020-07-310.017000
1222021-10-290.015000
1232014-07-310.025000
1242017-02-280.022000
1252017-04-280.022000
1262018-02-280.022000
1272026-06-300.034000
1282025-11-280.033000
1292017-01-310.022000
1302020-05-290.015000
1312020-08-310.015000
1322020-12-080.311000
1332021-12-310.019000
1342022-01-310.016000
1352023-09-290.033000
1362024-04-300.034000
1372025-06-300.035000
1382016-10-310.021000
1392018-04-300.025000
1402018-07-310.027000
1412019-07-310.026000
1422022-09-300.024000
1432026-05-290.034000
1442019-09-300.024000
1452021-03-310.016000
1462022-12-300.033000
1472014-04-300.026000
1482015-08-310.022000
1492017-05-310.021000
1502017-07-310.021000
1512018-08-310.030000
1522026-07-310.037000
1532014-11-280.023000
1542016-12-130.013000
1552021-07-300.017000
1562026-04-300.033000
1572015-09-300.023000
1582016-07-290.022000
1592021-01-290.013000
1602025-05-300.037000