f/overrides/event-backup/ahydx-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
22020-07-310.023000
32023-06-300.024000
42024-02-290.024000
52014-11-280.028000
62016-06-300.027000
72019-07-310.023000
82019-08-300.024000
92020-02-280.022000
102021-08-310.020000
112025-09-300.027000
122026-03-310.028000
132013-12-060.057000
142016-08-310.026000
152016-11-300.026000
162020-04-300.021000
172020-12-310.024000
182025-01-310.024000
192018-10-310.027000
202022-10-310.021000
212013-09-300.032000
222014-12-090.052000
232015-01-300.028000
242018-03-290.026000
252016-05-310.026000
262021-11-300.020000
272023-03-310.025000
282023-10-310.023000
292024-01-310.021000
302025-10-310.030000
312017-09-290.026000
322017-10-310.026000
332020-05-290.022000
342021-01-290.018000
352025-11-280.026000
362026-06-300.029000
372026-07-310.029000
382014-06-300.029000
392016-01-290.026000
402016-09-300.026000
412019-03-290.023000
422020-06-300.021000
432025-05-300.026000
442015-05-290.027000
452022-12-300.025000
462023-07-310.022000
472024-07-310.024000
482024-05-310.024000
492015-03-310.027000
502017-11-300.027000
512019-09-300.021000
522021-05-280.019000
532023-04-280.022000
542023-09-290.024000
552015-11-300.027000
562015-09-300.027000
572018-05-310.027000
582019-12-310.023000
592022-09-300.023000
602025-12-310.029000
612022-03-310.019000
622014-04-300.030000
632014-12-310.029000
642015-02-270.026000
652016-10-310.026000
662018-04-300.025000
672019-04-300.024000
682017-07-310.025000
692023-01-310.020000
702018-12-310.024000
712021-09-300.020000
722016-12-300.026000
732018-06-290.026000
742020-03-310.021000
752021-10-290.020000
762023-11-300.024000
772014-05-300.029000
782014-08-290.030000
792020-10-300.021000
802024-10-310.025000
812025-07-310.027000
822025-08-290.029000
832014-10-310.029000
842015-07-310.027000
852016-04-290.025000
862017-01-310.025000
872024-11-290.025000
882024-03-280.024000
892026-04-300.029000
902017-03-310.025000
912022-01-310.017000
922022-05-310.020000
932014-02-280.031000
942016-02-290.027000
952017-08-310.026000
962026-01-300.028000
972015-10-300.027000
982017-12-290.026000
992021-07-300.021000
1002022-08-310.021000
1012023-12-290.027000
1022024-09-300.023000
1032017-06-300.025000
1042018-07-310.025000
1052019-01-310.024000
1062021-02-260.021000
1072024-08-300.026000
1082025-02-280.025000
1092016-01-280.026000
1102019-05-310.025000
1112013-10-310.032000
1122019-06-280.021000
1132025-04-300.025000
1142026-02-270.028000
1152023-08-310.024000
1162014-03-310.030000
1172015-08-310.027000
1182016-03-310.026000
1192018-08-310.030000
1202020-11-300.020000
1212021-12-310.023000
1222020-08-310.020000
1232024-12-310.027000
1242014-01-310.031000
1252014-07-310.029000
1262015-04-300.027000
1272015-06-300.027000
1282017-02-280.025000
1292018-11-300.027000
1302025-06-300.024000
1312017-05-310.027000
1322022-06-300.020000
1332022-07-290.021000
1342023-02-280.023000
1352024-06-280.023000
1362013-12-310.031000
1372015-12-310.028000
1382018-09-280.026000
1392019-10-310.022000
1402014-09-300.029000
1412016-07-290.026000
1422019-02-280.025000
1432022-02-280.020000
1442026-05-290.029000
1452022-11-300.022000
1462024-04-300.025000
1472018-01-310.025000
1482018-02-280.027000
1492020-01-310.023000
1502021-04-300.021000
1512021-06-300.020000
1522022-04-290.021000
1532025-03-310.024000
1542013-11-290.032000
1552017-04-280.025000
1562019-11-290.023000
1572020-09-300.021000
1582021-03-310.020000
1592023-05-310.023000