f/overrides/event-backup/brf-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

395 B

1DateDividends
22015-12-210.399000
32018-12-200.511000
42018-12-270.068000
52023-12-180.882000
62013-12-230.530000
72013-12-270.018000
82017-12-181.063000
92020-12-210.353000
102021-12-200.488000
112011-12-235.132000
122012-12-240.616000
132024-12-230.448000
142025-12-220.889000
152009-12-230.451000
162010-12-233.575000
172014-12-220.892000
182016-12-190.676000
192019-12-230.697000
202022-12-190.557000