f/overrides/event-backup/iwp-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

2.0 KiB

1DateDividends
22021-09-240.133000
32025-03-180.099000
42005-06-200.014250
52007-09-250.040500
62018-09-260.213500
72019-03-200.116000
82011-09-230.052000
92017-03-240.107000
102017-09-260.129500
112022-03-240.114000
122001-12-140.002250
132002-12-130.008250
142008-03-240.041000
152010-09-230.052500
162022-06-090.111000
172021-12-300.017000
182022-09-260.182000
192004-03-260.011250
202006-03-240.044500
212009-07-020.046000
222013-03-250.063000
232007-12-270.055750
242024-09-250.165000
252025-09-160.119000
262017-07-060.122000
272022-12-130.236000
282002-03-080.000500
292003-09-120.008000
302010-07-020.055000
312013-09-240.092500
322014-12-240.161500
332003-06-130.006000
342006-06-220.074500
352009-09-220.044500
362014-07-020.126500
372009-03-240.043000
382016-07-060.123000
392016-12-220.198000
402018-12-170.105000
412004-06-250.011500
422006-12-200.025250
432007-06-280.032000
442008-07-020.054500
452019-09-240.094500
462019-12-160.132000
472021-06-100.057000
482023-06-070.085000
492023-03-230.141000
502023-09-260.180000
512003-12-120.014750
522013-12-230.101500
532015-09-250.097000
542018-07-030.126500
552020-12-140.078000
562025-06-160.133000
572002-09-130.004000
582011-12-220.084000
592017-12-210.112000
602018-03-220.137000
612021-12-130.091000
622023-12-200.153000
632003-03-070.004750
642013-07-020.078000
652015-07-020.113000
662020-09-230.103500
672011-07-050.069000
682012-03-230.058500
692014-03-250.102500
702015-12-240.145500
712001-10-010.002250
722002-06-140.003250
732005-09-230.029000
742010-03-240.042500
752026-06-150.162000
762024-12-170.119000
772005-03-240.025500
782010-12-220.089500
792015-03-250.096000
802016-09-260.099000
812024-03-210.118000
822004-09-240.016500
832005-12-220.041250
842007-03-230.052250
852012-12-190.203000
862021-03-250.052000
872026-03-170.054000
882003-12-160.008250
892009-12-230.065000
902011-03-240.052000
912019-06-170.111500
922004-12-230.019250
932008-12-230.060000
942012-06-260.065500
952024-06-110.105000
962020-03-250.105500
972020-06-150.101500
982025-12-160.158000
992006-09-260.035250
1002008-09-240.042500
1012012-09-240.086000
1022014-09-240.088000