f/overrides/event-backup/lrscx-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
22007-12-184.848000
32016-12-163.107000
42017-12-152.926000
52021-12-172.690000
62025-12-180.962000
72003-12-121.641000
82006-12-154.531000
92008-12-190.047000
102010-12-170.001000
112018-12-183.064000
121996-08-160.025000
132005-12-142.873000
142013-12-189.411000
152015-12-185.056000
162020-12-180.156000
172023-12-190.018000
181996-11-060.050000
192001-12-131.180000
202004-12-142.647000
212012-12-180.974000
222014-12-197.726000
232019-12-182.948000
242022-12-200.479000
252024-12-171.688000
262000-12-150.494000
272002-12-131.342000