f/overrides/event-backup/bbus-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

595 B

1DateDividends
22020-09-220.305000
32023-03-210.222000
42023-09-190.281000
52019-06-250.266000
62022-06-210.251000
72022-09-200.277000
82025-06-240.313000
92025-09-230.344000
102020-03-240.180000
112023-12-190.408000
122024-09-240.308000
132025-03-250.277000
142020-06-230.207000
152021-06-220.227000
162023-06-200.279000
172024-12-240.409000
182019-12-230.284000
192020-12-220.288000
202021-03-230.181000
212021-12-210.308000
222022-12-200.361000
232025-12-230.390000
242026-06-230.343000
252024-06-250.323000
262026-03-240.288000
272019-09-240.244000
282021-09-210.239000
292022-03-220.187000
302024-03-190.240000