f/overrides/event-backup/igaax-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

1.4 KiB

1DateDividends
22015-12-210.145000
32016-09-220.150000
42021-06-250.350000
52009-03-170.095000
62015-03-130.168000
72016-12-200.132000
82020-06-190.095000
92021-03-260.152000
102024-09-230.220000
112010-03-160.125000
122024-03-220.182000
132013-12-201.522000
142011-03-150.135000
152012-09-110.167000
162016-06-230.276000
172022-03-250.107000
182024-12-200.412000
192025-06-200.477000
202025-09-220.210000
212008-12-160.030000
222026-03-200.173000
232014-06-240.350000
242015-09-160.274000
252017-06-230.288000
262020-12-210.131000
272010-09-140.178000
282014-12-191.142000
292018-03-230.135000
302018-12-240.061000
312019-09-200.183000
322023-12-190.116000
332011-12-230.634000
342017-12-190.110000
352026-06-180.229000
362012-12-210.157000
372009-09-150.177000
382011-06-140.480000
392014-09-170.187000
402017-03-240.109000
412019-03-220.177000
422021-12-211.905000
432023-03-240.140000
442010-12-230.440000
452017-09-220.140000
462025-03-210.140000
472025-12-192.808000
482010-06-150.325000
492015-06-250.335000
502020-09-180.160000
512021-09-240.310000
522012-06-120.375000
532013-03-150.160000
542013-09-120.240000
552011-09-130.199000
562014-03-140.440000
572023-06-230.370000
582009-12-150.481000
592016-03-160.108000
602018-06-220.395000
612019-06-210.305000
622019-12-230.203000
632022-06-240.304000
642022-12-200.490000
652009-06-160.327000
662013-06-190.370000
672018-09-210.229000
682020-03-200.140000
692012-03-160.163000
702023-09-220.195000
712024-06-210.395000
722022-09-230.375000