f/overrides/event-backup/idlv-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

1.1 KiB

1DateDividends
22013-09-200.165000
32016-09-160.210000
42019-03-180.142000
52023-06-200.275000
62025-03-240.229000
72015-03-200.096000
82020-03-230.236000
92021-06-210.224000
102022-09-190.307000
112012-12-210.351000
122015-12-180.505000
132018-09-240.272000
142022-06-210.546000
152025-12-220.637000
162026-06-220.519000
172016-03-180.062000
182025-09-220.301000
192014-09-190.178000
202020-12-210.062000
212021-12-200.282000
222024-12-230.186000
232014-06-200.406000
242017-06-160.312000
252024-09-230.219000
262019-09-230.316000
272023-12-180.193000
282012-06-150.120000
292016-12-160.510000
302025-06-230.402000
312018-12-240.325000
322024-06-240.338000
332012-09-210.103000
342024-03-180.205000
352013-12-200.305000
362014-03-210.124000
372023-03-200.316000
382026-03-230.280000
392012-03-160.130000
402013-03-150.097000
412019-06-240.405000
422014-12-190.298000
432017-03-170.044000
442017-09-180.210000
452021-03-220.228000
462022-12-190.167000
472023-09-180.228000
482015-06-190.349000
492016-06-170.334000
502017-12-180.460000
512018-06-180.481000
522019-12-231.006000
532020-06-220.191000
542013-06-210.211000
552015-09-180.173000
562018-03-190.098000
572022-03-210.236000