f/overrides/event-backup/emxc-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

415 B

1DateDividends
22020-12-140.584000
32021-12-130.783000
42023-06-070.376000
52023-12-200.637000
62018-06-190.312000
72019-06-170.239000
82025-12-161.336000
92018-12-180.889000
102020-12-300.013000
112021-06-100.257000
122024-12-171.000000
132026-06-150.588000
142017-12-190.534000
152020-06-150.229000
162022-06-090.507000
172022-12-130.846000
182024-06-110.491000
192025-06-160.711000
202019-12-161.426000
212021-12-300.042000