f/overrides/event-backup/csvyx-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

635 B

1DateDividends
22009-12-070.244000
32010-12-070.707000
42010-12-300.050000
52023-12-072.664000
62026-06-222.943000
72022-12-070.244000
82023-06-220.751000
92011-12-063.085000
102018-06-210.956000
112019-12-050.385000
122022-06-222.167000
132012-12-071.975000
142013-12-057.741000
152016-12-072.558000
162017-12-062.155000
172021-06-241.958000
182024-06-241.886000
192025-06-241.435000
202018-12-062.253000
212020-06-190.093000
222012-12-270.092000
232021-12-074.209000
242010-04-300.039000
252014-12-056.871000
262016-06-272.376000
272017-06-212.797000
282019-06-181.031000
292024-12-061.171000
302025-12-054.927000
312015-11-064.645000
322020-12-070.247000