f/overrides/event-backup/jpin-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

795 B

1DateDividends
22020-06-230.452000
32021-09-210.574000
42021-12-211.529000
52022-03-220.201000
62024-09-240.445000
72015-12-241.077000
82018-03-210.092000
92024-12-241.006000
102018-06-260.655000
112021-06-220.619000
122024-03-190.015000
132020-03-240.134000
142023-12-191.393000
152024-06-250.782000
162025-09-230.433000
172018-12-240.361000
182019-03-200.146000
192023-06-201.334000
202025-06-240.908000
212026-03-240.180000
222019-06-250.822000
232020-09-220.434000
242020-12-220.405000
252021-12-300.094000
262023-03-210.144000
272025-03-250.185000
282025-12-231.538000
292019-09-240.376000
302019-12-230.539000
312021-03-230.159000
322023-09-190.510000
332014-12-240.147000
342018-09-250.279000
352022-06-210.787000
362022-09-200.256000
372022-12-200.262000
382026-06-230.913000
392016-12-230.817000
402017-12-261.272000