f/overrides/event-backup/bbca-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

655 B

1DateDividends
22021-12-210.553000
32022-09-200.428000
42023-12-190.559000
52024-12-240.570000
62025-09-230.437000
72020-09-220.298000
82021-03-230.212000
92021-06-220.337000
102022-06-210.388000
112020-06-230.320000
122019-12-230.414000
132023-06-200.434000
142025-12-230.621000
152019-09-240.328000
162026-03-240.265000
172021-09-210.356000
182018-12-240.402000
192019-06-250.304000
202024-09-240.431000
212025-03-250.215000
222018-09-250.096000
232024-03-190.238000
242024-06-250.431000
252026-06-230.449000
262022-12-200.507000
272020-03-240.230000
282020-12-220.442000
292023-03-210.220000
302025-06-240.430000
312019-03-200.160000
322023-09-190.397000
332022-03-220.196000