f/overrides/event-backup/acwv-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

615 B

1DateDividends
22012-06-210.268000
32015-06-250.733000
42016-12-211.078000
52021-12-131.128000
62025-06-161.181000
72024-12-171.631000
82012-12-180.813000
92013-12-180.847000
102014-06-250.796000
112018-06-190.896000
122021-06-100.951000
132023-06-070.865000
142014-12-170.736000
152025-12-161.297000
162019-06-171.023000
172019-12-161.413000
182022-12-131.203000
192023-12-201.555000
202015-12-210.849000
212018-12-180.992000
222020-06-150.920000
232026-06-151.067000
242011-12-200.263000
252013-06-270.723000
262017-06-200.850000
272017-12-190.868000
282022-06-090.871000
292024-06-110.914000
302016-06-220.784000
312020-12-140.791000