f/overrides/event-backup/fbdix-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

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Date,Dividends
2021-12-15,17.683000
2022-12-20,0.141000
2025-10-20,0.071000
2012-12-17,0.069000
2015-12-15,13.777000
2018-12-17,4.550000
1997-12-15,0.047000
1998-12-15,0.421000
2016-12-15,5.932000
2019-12-16,14.164000
2020-12-15,24.843000
2025-12-22,17.919000
2000-12-15,0.188000
2011-12-28,9.823000
2014-12-15,6.668000
2024-12-20,11.761000
1999-12-15,0.064000
2013-12-16,8.793000
2017-12-15,3.597000