f/overrides/event-backup/eqwl-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

1.5 KiB

1DateDividends
22023-09-180.429000
32024-09-230.486000
42025-06-230.443000
52012-03-160.118000
62012-09-210.159000
72017-06-160.220000
82022-06-210.406000
92023-06-200.411000
102025-09-220.478000
112013-09-200.141000
122015-03-200.131000
132019-12-230.390000
142017-09-180.193000
152016-06-170.194000
162021-06-210.305000
172022-09-190.389000
182025-12-220.517000
192026-06-220.515000
202007-06-150.085000
212007-09-210.069000
222009-09-180.068000
232010-12-170.220000
242018-12-240.339000
252014-06-200.161000
262021-12-200.419000
272018-03-190.167000
282010-06-180.086000
292012-12-210.221000
302015-06-190.223000
312022-12-190.383000
322020-03-230.343000
332020-12-210.361000
342022-03-210.407000
352007-12-210.045000
362012-06-150.173000
372013-12-200.162000
382021-03-220.327000
392023-12-180.452000
402019-09-230.348000
412020-06-220.329000
422020-09-210.346000
432014-09-190.165000
442024-12-230.471000
452017-12-180.262000
462010-09-170.063000
472014-03-210.130000
482015-12-180.247000
492016-12-160.357000
502019-06-240.296000
512024-03-180.467000
522007-03-160.057000
532008-09-190.076000
542013-03-150.135000
552018-06-180.282000
562018-09-240.299000
572006-12-150.020000
582008-03-200.012000
592015-09-180.187000
602023-03-200.436000
612026-03-230.529000
622008-06-200.108000
632011-06-170.173000
642011-12-160.178000
652011-09-160.181000
662013-06-210.140000
672014-12-190.250000
682016-03-180.112000
692016-09-160.203000
702008-12-190.076000
712009-06-190.157000
722009-12-180.084000
732019-03-180.225000
742024-06-240.478000
752025-03-240.531000