f/overrides/event-backup/bbmc-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

535 B

1DateDividends
22022-06-210.233000
32022-09-200.291000
42023-03-210.180000
52024-06-250.289000
62020-12-300.013000
72021-09-210.204000
82023-12-190.423000
92024-09-240.274000
102026-06-230.326000
112023-09-190.275000
122020-06-230.092000
132020-09-220.180000
142021-03-230.084000
152021-06-220.182000
162021-12-210.332000
172022-03-220.130000
182022-12-200.418000
192024-03-190.159000
202024-12-240.535000
212025-06-240.277000
222026-03-240.227000
232020-12-220.254000
242023-06-200.270000
252025-03-250.196000
262025-09-230.363000
272025-12-230.491000