f/overrides/event-backup/dbem-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

575 B

1DateDividends
22017-06-210.032000
32017-12-190.331000
42012-06-210.227000
52014-12-190.445000
62015-12-160.313000
72021-06-250.233000
82025-06-200.167000
92013-06-270.376000
102019-12-180.435000
112022-06-240.272000
122023-12-150.288000
132024-12-200.434000
142011-12-200.646000
152020-12-180.373000
162019-06-280.181000
172015-06-240.325000
182022-12-160.295000
192024-06-210.183000
202013-12-200.054000
212023-06-230.301000
222016-06-210.124000
232018-12-190.596000
242021-12-170.236000
252025-12-190.419000
262012-12-190.423000
272020-06-260.106000
282026-06-180.412000
292016-12-210.182000