f/overrides/event-backup/cpoax-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

455 B

1DateDividends
22017-12-159.013000
32018-06-220.154000
42014-12-152.282000
52017-06-230.174000
62015-12-152.815000
72016-12-152.734000
82019-06-210.128000
92019-12-132.844000
102021-12-139.843000
112024-12-110.233000
121999-12-160.884000
132003-01-310.045000
142012-12-143.214000
152014-06-230.132000
162015-06-230.013000
172020-12-147.324000
182022-12-128.958000
192003-02-260.044000
202010-04-300.018000
212018-12-142.921000
221999-06-230.004000
232013-12-132.969000