f/overrides/event-backup/dfukx-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
2004-06-08,0.189000
2007-06-08,0.255000
2007-09-10,0.174000
2009-03-10,0.022000
1995-12-27,1.655000
1997-12-22,3.657000
2012-06-08,0.298000
2014-12-16,2.975000
2024-06-27,0.220000
2006-09-08,0.150000
2013-09-10,0.158000
2013-12-12,0.920000
2015-12-16,2.183000
2018-06-28,0.145000
2019-09-27,0.197000
2022-12-14,0.082000
1998-12-21,3.845000
1999-12-20,3.670000
2000-12-18,2.283000
2008-03-10,0.039000
2014-06-09,0.177000
2014-09-09,0.238000
2017-09-28,0.213000
1993-12-15,0.083000
2002-12-16,0.855000
2005-03-08,0.036000
2007-12-19,1.452000
2009-12-09,0.181000
2010-12-09,0.227000
2016-09-29,0.058000
2021-06-29,0.095000
2001-12-17,1.264000
2003-12-22,0.800000
2011-09-08,0.234000
2011-12-13,0.385000
2022-06-29,0.169000
2026-06-29,0.303000
1995-11-27,1.027000
2010-03-09,0.031000
2013-03-08,0.005000
2009-06-09,0.185000
2010-06-08,0.173000
2023-09-28,0.186000
2025-12-15,0.477000
2004-12-20,1.225000
2008-12-10,0.127000
2019-12-17,2.933000
1996-12-27,2.049000
2008-06-10,0.295000
2013-06-10,0.390000
2018-12-18,1.258000
2019-06-27,0.082000
2023-12-13,0.496000
2004-09-08,0.147000
2012-12-13,0.346000
2015-09-09,0.258000
2025-06-27,0.422000
2012-03-08,0.026000
2020-12-16,0.274000
2021-09-29,0.156000
2024-09-27,0.375000
2025-09-29,0.348000
2015-06-08,0.197000
1993-11-16,0.330000
1994-11-28,0.442000
2006-06-08,0.140000
2009-09-09,0.093000
2010-09-08,0.112000
2011-03-08,0.061000
2012-09-10,0.077000
2016-12-15,1.568000
2017-12-15,2.574000
2018-09-27,0.201000
2023-06-29,0.235000
1994-12-28,0.041000
2005-09-08,0.190000
2006-12-18,1.951000
2008-09-09,0.169000
2024-12-13,0.395000
2005-06-08,0.160000
2016-03-30,0.414000
2017-03-30,0.014000
2005-12-19,1.608000
2011-06-08,0.245000
2016-06-29,0.262000
2017-06-29,0.288000
2021-12-15,1.198000
2022-09-29,0.151000