f/overrides/event-backup/nbngx-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

475 B

1DateDividends
21999-12-071.229000
32000-12-084.067000
42007-12-180.497000
52014-12-182.711000
62017-12-190.778000
72018-12-191.877000
82024-12-170.932000
91996-12-122.623000
102008-12-190.094000
112021-12-162.959000
122022-12-150.546000
132025-12-160.865000
141997-12-162.020000
152001-12-110.229000
162013-12-181.076000
172015-12-172.904000
182020-12-170.975000
191995-12-191.454000
202012-12-190.367000
212016-12-150.161000
222019-12-191.377000
232023-12-140.101000
241998-12-082.541000