f/overrides/event-backup/facdx-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
2007-12-14,0.509000
2012-12-21,0.653000
2013-09-06,1.925000
2007-09-07,1.556000
2021-12-17,4.149000
2012-09-07,1.941000
1999-09-03,0.410000
2005-12-02,0.040000
2006-09-08,1.945000
2006-12-01,0.808000
2015-09-11,2.552000
2018-12-07,2.218000
2000-12-15,0.310000
2004-01-09,0.005000
2011-09-09,2.565000
2014-12-22,1.343000
2025-12-26,7.462000
2013-12-20,1.597000
2019-12-20,0.180000
2020-12-18,3.781000
1998-09-04,0.390000
2008-09-12,0.370000
2010-04-21,0.114000
2011-12-09,0.072000
2024-12-26,6.856000
2000-09-08,0.810000
2014-09-05,3.046000