f/overrides/event-backup/bbin-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

575 B

1DateDividends
22021-12-210.936000
32022-09-200.166000
42023-09-190.223000
52020-03-240.074000
62021-06-220.644000
72024-09-240.263000
82026-06-230.982000
92019-12-300.046000
102021-09-210.327000
112022-06-210.855000
122023-06-200.849000
132025-03-250.207000
142025-09-230.276000
152020-06-230.012000
162020-12-300.015000
172023-12-190.623000
182024-06-250.883000
192024-12-240.602000
202025-06-240.954000
212026-03-240.256000
222020-12-220.249000
232021-03-230.204000
242023-03-210.126000
252025-12-231.358000
262022-12-200.180000
272022-03-220.202000
282024-03-190.199000
292020-09-220.244000