f/overrides/event-backup/csvax-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
22015-12-160.105000
32023-06-210.129000
42013-09-240.175000
52024-09-200.135000
62020-12-170.395000
72015-06-230.140000
82019-12-180.232000
92024-12-180.902000
102015-03-200.140000
112014-06-240.150000
122024-06-210.134000
132004-12-150.246000
142014-03-210.113000
152017-12-180.196000
162021-12-201.456000
172023-09-210.163000
182009-12-070.074000
192014-09-240.150000
202016-03-230.100000
212018-09-210.134000
222019-09-200.144000
232020-09-220.023000
242022-03-180.054000
252022-06-210.095000
262013-12-170.924000
272025-03-200.092000
282026-03-190.112000
292021-06-180.124000
302006-09-202.720000
312018-06-210.122000
322021-09-210.168000
332023-12-190.260000
342005-12-151.659000
352019-03-200.106000
362006-12-110.058000
372007-12-102.277000
382012-12-071.590000
392014-12-162.288000
402025-06-200.151000
412025-12-170.571000
422003-12-120.070000
432015-09-220.093000
442016-09-220.104000
452017-09-210.116000
462020-06-170.111000
472025-09-190.256000
482008-12-080.056000
492017-06-220.110000
502023-03-200.099000
512017-03-220.105000
522016-12-190.239000
532024-03-200.078000
542026-06-180.155000
552011-12-060.052000
562018-03-210.103000
572018-12-180.486000
582020-03-200.130000
592022-09-210.082000
602022-12-190.056000
612013-06-240.191000
622016-06-230.105000
632019-06-170.140000
642021-03-180.053000
652013-03-220.089000
662012-09-250.125000