f/overrides/event-backup/ifutx-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
22023-01-190.047000
32025-07-170.037000
42015-07-160.041000
52016-02-180.041000
62017-05-180.042000
72017-10-190.048000
82019-01-170.058000
92015-01-220.041000
102015-02-190.041000
112019-04-180.059000
122022-09-220.042000
132023-12-130.936000
142026-02-190.038000
152013-09-190.045000
162015-05-210.042000
172016-11-170.042000
182017-07-200.045000
192023-06-220.046000
202021-08-190.047000
212023-05-180.046000
222024-04-180.047000
232013-12-130.277000
242014-03-200.039000
252014-07-170.040000
262017-06-150.046000
272021-03-250.047000
282025-09-250.037000
292024-01-180.047000
302018-03-220.047000
312018-04-190.051000
322018-07-190.056000
332019-12-130.263000
342020-03-190.050000
352014-01-160.043000
362017-08-170.046000
372022-02-170.046000
382024-02-150.047000
392013-05-160.045000
402017-01-190.042000
412017-09-140.048000
422019-06-200.059000
432023-09-280.052000
442023-10-190.052000
452016-10-210.041000
462018-02-150.047000
472019-08-150.056000
482020-01-160.051000
492021-09-230.047000
502013-03-210.136000
512013-08-150.046000
522015-11-190.041000
532021-05-200.047000
542014-09-180.040000
552015-03-190.041000
562022-04-210.047000
572021-10-210.046000
582024-03-280.047000
592024-08-150.043000
602014-02-200.043000
612015-08-200.041000
622015-12-110.510000
632020-04-160.050000
642020-12-110.047000
652026-01-150.038000
662026-05-210.037000
672019-05-160.059000
682019-11-210.051000
692021-11-180.047000
702023-07-200.052000
712025-02-200.041000
722013-06-200.045000
732015-09-170.041000
742021-07-150.047000
752026-07-160.037000
762014-10-160.041000
772016-12-130.202000
782017-12-130.651000
792020-11-190.046000
802025-04-170.020000
812026-06-250.037000
822013-04-180.045000
832021-01-210.047000
842021-06-240.048000
852022-11-170.042000
862025-01-160.041000
872016-05-190.041000
882016-09-150.041000
892023-08-170.052000
902014-06-190.040000
912014-08-210.040000
922018-11-150.059000
932019-10-170.056000
942020-09-170.047000
952020-08-200.046000
962015-04-160.041000
972016-06-160.042000
982018-01-180.047000
992021-02-180.047000
1002021-04-150.047000
1012012-12-070.146000
1022018-09-130.059000
1032023-11-160.052000
1042024-06-270.043000
1052025-05-150.037000
1062021-12-141.258000
1072022-12-141.018000
1082025-10-160.039000
1092013-02-271.101000
1102016-07-210.041000
1112017-04-200.042000
1122018-05-170.051000
1132019-09-190.056000
1142026-04-160.038000
1152022-06-230.042000
1162022-08-180.042000
1172024-12-121.492000
1182018-08-160.059000
1192025-11-200.039000
1202025-12-112.861000
1212013-07-180.045000
1222014-12-120.252000
1232016-03-170.041000
1242016-08-180.041000
1252018-06-210.056000
1262018-12-141.765000
1272022-05-190.042000
1282023-02-160.047000
1292015-06-180.042000
1302015-10-150.041000
1312016-01-210.041000
1322016-04-210.042000
1332017-03-160.042000
1342023-04-200.046000
1352024-05-160.047000
1362017-11-160.096000
1372019-02-210.058000
1382022-03-240.046000
1392025-03-270.041000
1402013-10-170.045000
1412018-10-180.059000
1422022-01-200.047000
1432022-10-200.042000
1442024-11-210.042000
1452014-04-170.039000
1462019-07-180.059000
1472022-07-210.042000
1482024-10-170.042000
1492025-06-260.037000
1502020-10-150.046000
1512024-09-260.042000
1522026-03-260.038000
1532013-11-210.046000
1542014-11-200.041000
1552017-02-160.042000
1562019-03-210.058000
1572020-05-210.051000
1582024-07-180.043000
1592025-08-210.037000
1602014-05-150.039000
1612020-02-200.051000
1622020-06-180.051000
1632020-07-160.051000
1642023-03-230.046000