f/overrides/event-backup/fdivx-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
2001-12-14,0.010000
2002-12-13,0.130000
2003-12-30,0.010000
2012-12-07,0.524000
2015-12-04,0.473000
2019-12-06,0.533000
2021-12-03,5.136000
1997-12-05,0.600000
1999-12-03,0.950000
2000-12-08,1.360000
2005-12-09,1.010000
1995-12-08,0.630000
2003-12-12,0.290000
2010-12-03,0.449000
2013-12-06,0.552000
2017-12-08,2.121000
2022-12-09,0.487000
1993-12-10,0.010000
2011-12-02,0.488000
2024-12-13,1.657000
1998-12-04,0.700000
2014-12-05,1.314000
2016-12-09,0.452000
2007-12-07,3.040000
2008-12-05,0.312000
2023-12-08,1.761000
1996-12-06,0.510000
2006-12-08,2.870000
2009-12-04,0.348000
1994-12-09,0.420000
2004-12-10,0.210000
2010-12-30,0.095000
2018-12-07,2.318000
2020-12-04,0.463000
2025-12-12,5.198000
1992-12-11,0.100000