f/overrides/event-backup/dprex-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
2003-03-21,0.120000
2005-06-22,0.105000
2012-09-21,0.057000
2019-06-21,0.058000
2022-09-22,0.115000
1998-03-20,0.090000
1999-03-22,0.105000
2016-03-22,0.069000
2017-09-22,0.058000
2019-03-22,0.064000
2000-09-22,0.120000
2004-09-22,0.120000
2016-12-22,2.871000
2012-06-22,0.062000
2002-09-20,0.120000
2006-06-22,0.095000
2018-03-22,0.058000
2022-12-16,1.382000
2002-12-20,0.558000
2008-09-22,0.086000
2015-06-22,0.055000
2021-12-17,0.666000
1995-12-27,0.100000
2013-03-22,0.056000
2016-06-22,0.071000
2013-09-20,0.069000
2002-03-22,0.120000
2009-06-22,0.075000
2010-12-22,0.029000
2010-06-22,0.047000
2013-06-21,0.066000
1998-09-22,0.090000
2007-03-22,0.095000
2026-03-20,0.092000
2004-03-22,0.120000
2004-06-22,0.120000
2007-09-21,0.095000
2012-03-22,0.054000
2014-12-22,0.791000
1999-12-22,0.210000
2000-03-22,0.120000
2000-06-22,0.120000
2018-12-21,0.048000
2024-12-16,0.005000
1996-12-12,1.510000
2011-03-22,0.048000
2022-06-22,0.110000
2022-03-22,0.062000
2001-12-21,0.656000
2006-09-22,0.095000
2018-09-21,0.079000
2009-03-20,0.082000
2011-06-22,0.046000
2018-06-22,0.070000
2001-09-21,0.120000
2005-03-22,0.105000
2011-12-22,0.041000
2010-03-22,0.052000
2016-09-22,0.045000
2026-06-22,0.174000
1998-12-22,1.055000
2003-09-22,0.120000
2006-12-21,6.726000
2005-09-22,0.105000
2007-06-22,0.095000
2020-12-18,0.040000
2023-12-18,0.090000
2007-12-21,3.678000
2010-09-22,0.048000
2015-12-22,1.663000
2008-03-20,0.075000
2019-09-20,0.029000
2001-06-22,0.120000
2017-12-22,0.257000
2024-06-21,0.083000
2008-12-22,0.068000
2011-09-22,0.050000
2014-09-22,0.070000
1997-12-16,1.415000
2006-03-22,0.095000
2017-03-22,0.049000
2025-03-21,0.057000
2025-06-20,0.098000
1999-06-22,0.105000
2009-09-22,0.057000
2020-09-22,0.037000
2015-09-22,0.063000
2021-06-22,0.064000
2023-03-22,0.075000
1998-06-22,0.090000
1999-09-22,0.120000
2009-12-22,0.040000
2020-06-22,0.065000
2019-12-19,0.318000
2021-09-22,0.068000
2024-09-20,0.052000
2001-03-22,0.120000
2004-12-22,1.977000
2005-12-22,3.186000
2013-12-20,0.487000
2023-06-22,0.048000
2003-12-22,0.678000
2015-03-20,0.044000
2025-09-22,0.104000
2024-03-22,0.152000
2017-06-22,0.056000
2020-03-20,0.037000
2000-12-22,0.200000
2008-06-20,0.083000
2012-12-21,0.042000
2021-03-22,0.035000
2003-06-20,0.120000
2014-03-21,0.066000
2014-06-20,0.070000