f/overrides/event-backup/fof-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

3.5 KiB

1DateDividends
22016-06-200.260000
32023-11-140.087000
42008-11-120.118000
52014-09-170.260000
62019-01-150.087000
72019-06-180.087000
82017-04-180.087000
92018-06-190.087000
102020-11-170.087000
112021-05-110.087000
122012-09-180.260000
132018-04-170.087000
142018-11-130.087000
152023-03-140.087000
162024-07-160.087000
172014-03-190.260000
182015-03-180.260000
192021-10-120.087000
202022-08-160.087000
212021-06-150.087000
222025-03-110.087000
232025-09-090.087000
242007-02-130.118000
252007-11-130.118000
262012-12-190.260000
272015-12-170.260000
282024-11-120.087000
292016-12-090.087000
302018-01-160.087000
312021-12-140.087000
322023-02-140.087000
332011-06-210.260000
342011-12-210.260000
352014-12-190.260000
362024-09-100.087000
372006-12-220.160000
382007-08-130.118000
392008-03-120.118000
402008-08-130.118000
412019-11-120.087000
422019-12-170.087000
432025-08-120.087000
442008-06-110.118000
452016-09-200.260000
462017-06-200.087000
472018-05-150.087000
482010-09-220.260000
492017-01-170.087000
502024-01-160.087000
512008-05-130.118000
522010-12-220.260000
532022-01-110.087000
542022-02-150.087000
552022-09-130.087000
562007-12-120.118000
572012-03-150.260000
582019-08-200.087000
592020-08-180.087000
602018-03-200.087000
612021-08-170.087000
622025-04-080.087000
632007-06-130.118000
642007-09-120.118000
652008-09-110.118000
662013-06-180.260000
672022-06-140.087000
682023-09-120.087000
692025-05-130.087000
702025-10-140.087000
712009-03-110.270000
722014-06-190.260000
732017-12-190.087000
742021-04-130.087000
752026-05-120.087000
762020-02-110.087000
772021-09-140.087000
782007-05-110.118000
792016-03-180.260000
802017-09-190.087000
812017-10-170.087000
822009-06-180.270000
832017-08-150.087000
842023-04-110.087000
852010-03-220.230000
862018-12-180.087000
872019-09-170.087000
882025-11-120.087000
892024-06-110.087000
902024-08-130.087000
912013-12-190.260000
922022-05-100.087000
932024-03-120.087000
942024-04-090.087000
952024-05-140.087000
962025-01-140.087000
972025-02-110.087000
982026-03-100.087000
992007-12-210.260000
1002008-01-110.118000
1012012-06-190.260000
1022023-06-130.087000
1032016-11-160.087000
1042018-09-180.087000
1052019-03-190.087000
1062019-05-140.087000
1072020-09-150.087000
1082026-01-130.087000
1092017-07-180.087000
1102018-10-160.087000
1112020-06-160.087000
1122020-07-140.087000
1132018-08-210.087000
1142019-07-160.087000
1152020-01-140.087000
1162020-12-150.087000
1172008-04-110.118000
1182015-06-180.260000
1192017-02-140.087000
1202018-07-170.087000
1212023-07-110.087000
1222023-12-120.087000
1232026-06-090.087000
1242017-11-140.087000
1252019-04-160.087000
1262022-04-120.087000
1272022-11-150.087000
1282022-12-130.087000
1292023-01-170.087000
1302024-02-130.087000
1312024-10-150.087000
1322008-10-100.118000
1332009-09-210.230000
1342017-03-210.087000
1352021-01-120.087000
1362025-12-090.087000
1372026-04-140.087000
1382020-04-140.087000
1392007-10-110.118000
1402013-03-180.260000
1412013-09-190.260000
1422015-09-180.260000
1432018-02-130.087000
1442020-10-130.087000
1452022-07-120.087000
1462023-10-100.087000
1472007-07-110.118000
1482008-02-130.118000
1492010-06-210.230000
1502017-05-160.087000
1512026-02-100.087000
1522008-07-110.118000
1532022-03-150.087000
1542022-10-110.087000
1552025-07-150.087000
1562021-07-130.087000
1572026-07-140.087000
1582007-04-110.118000
1592008-12-110.118000
1602011-09-200.260000
1612019-10-150.087000
1622025-06-100.087000
1632020-03-170.087000
1642021-03-160.087000
1652021-11-160.087000
1662023-05-090.087000
1672021-02-090.087000
1682023-08-150.087000
1692024-12-100.087000
1702026-08-110.087000
1712009-12-210.230000
1722011-03-220.260000
1732016-10-180.087000
1742019-02-120.087000
1752007-01-110.117000
1762007-03-130.118000
1772020-05-120.087000