f/overrides/event-backup/bbax-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
22022-03-220.533000
32022-06-210.947000
42022-09-200.747000
52023-06-200.639000
62018-09-250.330000
72024-03-190.399000
82023-03-210.395000
92023-09-190.410000
102024-06-250.517000
112024-09-240.705000
122024-12-240.390000
132019-06-250.576000
142026-06-230.534000
152019-12-230.398000
162020-09-220.522000
172020-12-220.200000
182021-06-220.423000
192021-09-210.925000
202025-12-230.550000
212018-12-240.288000
222019-03-200.510000
232021-03-230.448000
242023-12-190.621000
252025-03-250.447000
262025-06-240.495000
272019-09-240.626000
282020-03-240.426000
292021-12-211.164000
302026-03-240.484000
312020-06-230.242000
322022-12-200.251000
332025-09-230.683000