f/overrides/event-backup/iak-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

1.6 KiB

1DateDividends
22016-06-210.216000
32019-12-160.314000
42025-03-180.775000
52008-09-240.137000
62012-09-250.108000
72015-09-250.219000
82018-03-220.459000
92020-09-230.360000
102007-03-230.078000
112007-12-270.191000
122014-09-240.171000
132012-06-190.076000
142013-12-230.158000
152016-03-230.263000
162018-12-170.325000
172007-09-250.217000
182009-09-220.082000
192010-03-250.080000
202014-03-250.223000
212017-09-260.281000
222020-03-250.506000
232006-09-260.112000
242007-06-280.106000
252013-06-260.121000
262016-09-260.237000
272017-12-190.323000
282021-03-250.582000
292021-09-240.499000
302024-03-210.411000
312009-03-250.089000
322013-09-240.136000
332015-12-240.254000
342020-06-150.219000
352023-06-070.239000
362024-06-110.224000
372018-09-260.258000
382019-03-200.361000
392019-06-170.283000
402012-12-190.299000
412015-06-240.159000
422017-06-270.241000
432018-06-260.300000
442023-09-260.491000
452006-06-220.076000
462008-06-250.124000
472009-12-230.189000
482024-09-250.522000
492022-03-240.324000
502009-06-240.067000
512010-12-220.419000
522017-03-240.231000
532016-12-210.279000
542006-12-200.156000
552010-09-230.092000
562011-12-220.281000
572020-12-140.309000
582025-12-160.667000
592010-06-240.060000
602013-03-250.123000
612014-06-240.162000
622022-12-130.500000
632023-12-200.433000
642024-12-170.731000
652026-03-171.996000
662026-06-150.394000
672011-06-240.074000
682021-12-130.395000
692022-09-260.465000
702008-03-250.125000
712011-09-230.076000
722025-09-160.512000
732019-09-240.354000
742021-06-100.297000
752012-03-260.091000
762014-12-240.230000
772015-03-250.198000
782023-03-230.277000
792025-06-160.351000
802008-12-230.200000
812021-12-300.118000
822022-06-090.260000