f/overrides/event-backup/noiax-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

475 B

1DateDividends
22013-04-090.027000
32015-12-280.241000
42018-12-210.515000
52019-12-230.407000
62023-12-280.251000
72011-12-290.001000
82012-04-100.094000
92012-12-270.137000
102015-04-080.076000
112016-12-270.207000
122017-12-270.162000
132024-12-300.383000
142025-12-300.539000
152013-12-230.228000
162016-04-070.044000
172020-12-300.033000
182021-04-080.010000
192021-12-300.224000
202022-12-290.222000
212014-04-080.021000
222014-12-230.455000
232023-04-100.001000
242024-04-100.016000