f/overrides/event-backup/altfx-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

379 B

1DateDividends
21999-12-154.038000
32023-12-050.049000
42025-12-0918.145000
51996-12-180.420000
61998-12-115.170000
72009-11-190.810000
82010-11-180.073000
92020-12-0811.516000
102000-12-156.179000
112016-12-143.468000
122018-12-118.181000
132019-12-103.692000
142021-12-0717.691000
152022-12-063.276000
161997-12-090.575000
172001-03-150.100000
182011-12-190.379000
192024-12-1011.705000