f/overrides/event-backup/dtcax-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

415 B

1DateDividends
22013-12-050.492000
32016-12-020.645000
42019-12-050.333000
52021-12-020.799000
62025-12-102.080000
72001-11-280.073000
82008-12-080.038000
92010-12-090.020000
102014-12-041.867000
112020-12-030.491000
122023-12-050.525000
132024-12-061.321000
142000-12-060.923000
152012-12-060.074000
162015-12-031.781000
172022-12-051.708000
182007-12-050.023000
192011-12-090.037000
202017-12-042.999000
212018-12-040.473000