f/overrides/event-backup/ivw-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

2.1 KiB

1DateDividends
22005-09-260.049750
32018-03-220.116750
42024-06-110.074000
52009-03-250.044250
62019-12-160.298000
72003-12-150.051250
82005-12-230.043750
92006-12-210.055750
102008-12-240.050250
112012-12-190.115000
122024-03-210.084000
132009-09-230.049250
142009-12-240.057000
152017-12-190.131500
162020-03-250.125750
172003-03-100.030250
182007-12-270.051000
192012-09-250.088750
202002-03-110.024000
212016-06-210.123000
222024-09-250.145000
232025-09-160.138000
242009-06-230.049250
252007-03-260.052750
262016-12-210.128750
272025-12-160.130000
282010-12-230.060000
292013-06-260.082000
302000-06-210.006000
312014-06-240.093500
322021-12-130.093000
332022-12-130.137000
342023-03-230.188000
352007-09-260.049750
362011-09-260.063750
372020-12-140.143000
382010-09-240.060000
392006-06-230.045500
402020-06-150.117000
412022-03-240.127000
422026-06-150.126000
432001-12-170.027750
442021-03-250.097000
452021-09-240.113000
462022-06-090.105000
472001-10-020.035750
482001-03-120.022000
492013-03-250.081500
502018-09-260.117750
512023-06-070.148000
522013-12-230.103750
532002-12-160.038250
542006-09-270.049750
552013-09-240.090000
562014-09-240.092500
572001-06-110.014750
582006-03-270.040500
592014-03-250.081000
602015-03-250.097750
612017-06-270.122250
622003-06-160.034750
632010-12-290.004750
642002-09-160.031500
652005-03-280.063000
662018-06-260.120000
672002-06-170.026500
682015-09-250.115000
692015-12-240.125250
702018-12-170.126500
712004-06-280.037250
722011-06-230.063250
732007-06-290.049750
742011-03-250.059250
752016-03-230.107250
762017-09-260.134250
772019-03-200.146750
782004-09-270.042750
792003-09-150.035500
802021-06-100.084000
812017-03-240.109750
822020-09-230.136500
832022-09-260.153000
842012-06-190.074000
852019-09-240.155250
862025-06-160.118000
872026-03-170.101000
882005-06-210.031500
892025-03-180.108000
902004-03-290.033250
912008-03-250.046000
922008-06-240.043000
932019-06-170.187250
942004-12-270.130750
952008-09-250.048250
962012-03-260.066750
972014-12-240.114000
982000-12-130.044750
992023-12-200.213000
1002024-12-170.133000
1012011-12-220.086000
1022015-06-240.100250
1032010-06-230.052750
1042010-03-250.049000
1052016-09-260.102250
1062023-09-260.223000
1072000-09-200.016000