f/overrides/event-backup/evf-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

333 lines
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Plaintext

Date,Dividends
2003-07-08,0.043000
2012-05-09,0.037000
2013-12-10,0.035000
2015-01-08,0.034000
2019-09-12,0.035000
1999-07-09,0.070000
2001-06-07,0.065000
2008-05-08,0.043000
2017-12-08,0.030000
2025-12-12,0.039000
2008-02-07,0.052000
2010-04-08,0.032000
2013-12-27,0.066000
2014-10-08,0.034000
2020-11-10,0.036000
2023-07-12,0.053000
2023-10-11,0.056000
2000-07-10,0.077000
2014-07-09,0.033000
2016-09-08,0.035000
2017-08-09,0.030000
2022-11-09,0.041000
2023-08-10,0.056000
2001-11-07,0.056000
2004-04-07,0.035000
2004-08-09,0.036000
2008-12-08,0.043000
2022-01-12,0.033000
2018-08-10,0.031000
2000-12-07,0.075000
2007-11-08,0.053000
2011-07-07,0.034000
2011-12-08,0.035000
2013-09-11,0.035000
2016-12-27,0.033000
2004-02-09,0.035000
2005-06-08,0.041000
2006-03-08,0.049000
2015-02-10,0.033000
2018-05-10,0.031000
2026-01-14,0.039000
2008-08-07,0.043000
2010-02-08,0.033000
2017-10-11,0.029000
2024-11-08,0.048000
1999-03-11,0.190000
2002-08-08,0.045000
2007-02-08,0.056000
2018-04-11,0.031000
1999-02-10,0.205000
1999-08-10,0.071000
2023-06-09,0.053000
2024-09-13,0.054000
2004-06-08,0.035000
2007-07-09,0.051000
2009-07-08,0.027000
2009-12-08,0.029000
2019-02-08,0.032000
2021-10-08,0.031000
1999-12-08,0.073000
2001-08-08,0.063000
2006-08-08,0.053000
2013-02-07,0.038000
2024-07-11,0.061000
2026-02-13,0.039000
2000-03-08,0.073000
2000-04-11,0.075000
2003-02-10,0.040000
2011-10-11,0.034000
2020-07-10,0.027000
2022-06-10,0.036000
1999-05-12,0.208000
2006-09-07,0.053000
2014-09-10,0.033000
2015-06-09,0.034000
2016-04-07,0.033000
2020-10-09,0.036000
2009-01-08,0.043000
2013-06-11,0.036000
2015-07-09,0.034000
2023-12-27,0.061000
2013-05-09,0.038000
2023-09-08,0.056000
2024-06-13,0.061000
2025-03-13,0.044000
2003-11-07,0.038000
2007-10-09,0.052000
2010-08-09,0.035000
2018-06-08,0.031000
2004-12-08,0.037000
2011-02-08,0.035000
2012-09-12,0.039000
2012-12-11,0.039000
2013-07-09,0.036000
2020-09-10,0.035000
2014-12-09,0.034000
2015-12-29,0.035000
2000-06-08,0.077000
2004-09-08,0.037000
2011-06-08,0.033000
2011-12-28,0.050000
2012-12-27,0.019000
2014-05-08,0.032000
2025-02-13,0.044000
2025-10-14,0.039000
2021-11-10,0.032000
2021-12-10,0.033000
2007-04-09,0.054000
2007-12-27,0.052000
2010-09-08,0.036000
2011-03-08,0.035000
2012-11-08,0.040000
2019-12-11,0.038000
2007-06-07,0.051000
2019-11-08,0.038000
2021-09-10,0.032000
2023-02-10,0.052000
2002-10-08,0.045000
2004-10-07,0.036000
2012-02-09,0.036000
2016-11-09,0.034000
2020-06-10,0.026000
2000-12-27,0.078000
2003-05-08,0.044000
2005-04-07,0.039000
2006-11-08,0.055000
2009-02-09,0.031000
2014-08-07,0.033000
2025-05-13,0.044000
2006-12-27,0.056000
2007-08-08,0.052000
2009-04-08,0.029000
2010-12-29,0.056000
2013-08-08,0.035000
2026-06-12,0.031000
2001-12-10,0.052000
2004-05-10,0.036000
2009-03-09,0.029000
2014-04-09,0.034000
2016-06-09,0.034000
2023-12-08,0.061000
2003-08-07,0.043000
2005-05-09,0.039000
2010-03-08,0.032000
2016-08-09,0.034000
2016-10-11,0.034000
2017-02-09,0.032000
2002-11-07,0.045000
2005-07-07,0.043000
2011-05-09,0.033000
2011-11-08,0.034000
2014-02-11,0.034000
2021-03-10,0.034000
2005-11-08,0.046000
2005-12-08,0.046000
2017-06-08,0.031000
2022-12-09,0.050000
2000-05-09,0.077000
2003-03-10,0.043000
2008-09-09,0.043000
2011-09-08,0.034000
2016-02-09,0.034000
2017-04-11,0.030000
2020-03-11,0.035000
2021-08-11,0.032000
2003-12-08,0.036000
2004-12-28,0.040000
2006-10-06,0.054000
2013-04-09,0.036000
2015-08-11,0.034000
2017-07-11,0.030000
2023-04-12,0.053000
2014-06-10,0.032000
2021-07-09,0.032000
2003-04-08,0.043000
2003-06-09,0.044000
2004-03-08,0.034000
2005-10-11,0.045000
2009-10-07,0.026000
2012-10-09,0.039000
2010-07-08,0.035000
2012-04-10,0.038000
2018-02-09,0.031000
2021-05-12,0.034000
2023-05-10,0.053000
2025-04-11,0.044000
2015-05-07,0.034000
2016-07-07,0.034000
2002-03-07,0.048000
2007-09-11,0.052000
2025-01-13,0.047000
2025-07-11,0.042000
2007-03-08,0.055000
2014-03-11,0.034000
2015-12-09,0.035000
2018-09-13,0.031000
2025-11-13,0.039000
2012-06-07,0.038000
2021-04-09,0.034000
2000-02-09,0.075000
2001-04-10,0.072000
2002-07-08,0.046000
2005-03-07,0.038000
2008-07-08,0.043000
2008-11-07,0.043000
2010-12-08,0.036000
2012-08-09,0.038000
2002-09-10,0.046000
2005-08-08,0.044000
2005-12-28,0.046000
2006-06-08,0.052000
2007-05-08,0.051000
2009-05-07,0.029000
2004-07-08,0.035000
2015-10-08,0.035000
2017-09-08,0.030000
2024-12-12,0.047000
2003-12-26,0.037000
2017-05-09,0.030000
2020-08-12,0.031000
2026-08-13,0.032000
2001-05-09,0.069000
2001-07-10,0.061000
2019-03-08,0.033000
2021-02-10,0.035000
2002-05-08,0.046000
2002-12-09,0.043000
2006-05-08,0.052000
2011-08-09,0.034000
2000-08-09,0.077000
2009-06-08,0.028000
2010-06-08,0.035000
2015-11-10,0.036000
2020-04-09,0.030000
2022-03-10,0.033000
2022-07-08,0.037000
2001-03-08,0.067000
2009-08-10,0.024000
2009-12-29,0.031000
2012-03-08,0.037000
2019-05-10,0.034000
2020-12-29,0.036000
2026-05-14,0.032000
1999-09-09,0.071000
2019-04-10,0.034000
2019-06-12,0.034000
2019-07-10,0.034000
2022-02-10,0.033000
2006-12-07,0.056000
2017-03-09,0.030000
2019-08-09,0.034000
2026-07-14,0.032000
2002-02-07,0.049000
2005-02-08,0.042000
2013-03-07,0.037000
2015-09-09,0.035000
2022-12-28,0.050000
2026-04-14,0.033000
2018-10-10,0.031000
2020-12-10,0.036000
1999-04-14,0.200000
1999-12-27,0.074000
2003-09-09,0.038000
2003-10-08,0.038000
2013-11-07,0.035000
2017-11-10,0.031000
2024-03-08,0.061000
2025-08-13,0.040000
2026-03-13,0.039000
1999-10-12,0.070000
2002-06-10,0.045000
2002-12-26,0.043000
2018-07-11,0.032000
1999-11-09,0.071000
2024-08-12,0.055000
1999-06-10,0.072000
2006-07-10,0.053000
2020-05-08,0.026000
2022-08-10,0.038000
2024-05-10,0.061000
2010-11-08,0.037000
2000-11-08,0.076000
2001-02-08,0.073000
2006-02-08,0.050000
2018-11-08,0.032000
2021-06-10,0.033000
2010-10-06,0.036000
2011-04-07,0.034000
2018-03-09,0.031000
2019-12-27,0.038000
2007-12-10,0.053000
2008-10-08,0.043000
2015-03-10,0.033000
2015-04-09,0.034000
2020-02-12,0.038000
2023-03-10,0.053000
2022-05-11,0.035000
2022-10-12,0.040000
2004-11-08,0.036000
2005-09-08,0.045000
2009-11-09,0.028000
2010-05-10,0.034000
2012-07-10,0.038000
2018-12-12,0.032000
2025-09-12,0.040000
2001-10-05,0.053000
2014-11-10,0.033000
2016-05-10,0.033000
2025-06-13,0.043000
2002-04-08,0.047000
2013-10-09,0.035000
2018-12-27,0.032000
2000-09-07,0.077000
2016-12-08,0.033000
2022-04-08,0.032000
2022-09-09,0.040000
2023-11-10,0.056000
2024-04-10,0.061000
2006-04-10,0.051000
2008-06-09,0.043000
2024-10-11,0.052000
2000-10-10,0.076000
2009-09-08,0.026000
2016-03-09,0.034000
1998-12-29,0.126000
2001-12-27,0.050000
2008-04-08,0.051000
2017-12-27,0.030000
2024-02-12,0.061000
2008-03-10,0.051000
2019-10-10,0.038000