f/overrides/event-backup/iwy-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

1.3 KiB

1DateDividends
22025-06-160.242000
32026-06-150.272000
42011-03-240.104000
52013-03-250.151000
62017-07-060.248000
72021-09-240.259000
82024-06-110.194000
92016-03-230.192000
102019-09-240.267000
112011-07-050.139000
122011-09-230.099000
132012-12-190.215000
142014-03-250.162000
152015-03-250.202000
162017-03-240.191000
172020-06-150.196000
182011-12-220.145000
192012-06-260.136000
202014-12-240.188000
212015-12-240.220000
222018-07-030.258000
232014-07-020.210000
242018-12-280.015000
252019-06-170.272000
262025-09-160.260000
272019-12-160.255000
282021-03-250.216000
292026-03-170.201000
302009-12-230.109000
312013-09-240.158000
322015-07-020.235000
332017-12-210.280000
342025-12-160.266000
352022-09-260.334000
362023-12-200.387000
372010-03-240.076000
382010-09-230.091000
392012-03-230.120000
402014-09-240.167000
412018-03-220.203000
422024-09-250.303000
432018-09-260.216000
442019-03-200.228000
452021-06-100.173000
462022-03-240.229000
472023-03-230.267000
482012-09-240.153000
492018-12-170.252000
502022-12-130.299000
512024-12-170.250000
522013-07-020.197000
532016-12-220.226000
542021-12-130.226000
552023-06-070.235000
562010-12-220.098000
572015-09-250.189000
582016-09-260.187000
592017-09-260.203000
602020-03-250.250000
612016-07-060.247000
622020-12-140.254000
632022-06-090.197000
642010-07-020.114000
652023-09-260.297000
662013-12-230.200000
672020-09-230.247000
682024-03-210.249000
692025-03-180.237000