f/overrides/event-backup/bdsix-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
22020-12-070.433000
32021-12-071.205000
42022-12-080.101000
52014-07-170.835000
62014-12-120.325000
72015-12-110.394000
82016-07-210.010000
92018-07-190.268000
102023-07-200.041000
112024-07-180.034000
122024-12-110.106000
132025-12-110.886000
142015-07-160.194000
152017-07-200.214000
162019-12-050.104000
172020-07-160.028000
182022-07-140.302000
192013-12-050.698000
202016-12-060.085000
212017-12-040.161000
222025-07-170.064000
232018-12-060.403000
242019-07-180.032000
252021-07-151.015000
262023-12-070.119000
272026-07-221.053000