f/overrides/event-backup/hicox-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

472 lines
9.2 KiB
Plaintext

Date,Dividends
1998-10-15,0.052000
1994-08-15,0.052000
1997-10-15,0.047000
2003-03-14,0.051000
2006-12-15,0.041000
2007-04-16,0.040000
2007-11-14,0.039000
2013-09-30,0.030000
1991-06-17,0.059000
1994-10-14,0.050000
1995-02-15,0.052000
1997-08-14,0.048000
2002-09-16,0.055000
2005-12-16,0.048000
2016-11-15,0.031000
2022-06-15,0.031000
1992-03-16,0.055000
2024-11-15,0.037000
2019-03-15,0.034000
2000-09-14,0.060000
2007-05-15,0.037000
2019-10-15,0.029000
1989-06-15,0.064000
1991-09-16,0.059000
2007-06-18,0.042000
2010-12-31,0.034000
2011-08-31,0.036000
2025-06-16,0.037000
1991-01-17,0.063000
2001-05-31,0.057000
2018-11-15,0.027000
2022-10-17,0.034000
1988-01-15,0.069000
2010-07-30,0.034000
2022-08-15,0.033000
1989-01-16,0.068000
2014-10-31,0.033000
2016-01-15,0.034000
2017-03-15,0.033000
2005-10-14,0.039000
1991-11-15,0.058000
1995-07-14,0.052000
1996-03-15,0.048000
2000-06-15,0.065000
2000-11-15,0.052000
2011-10-31,0.036000
2012-03-30,0.034000
1988-07-15,0.063000
2001-10-15,0.055000
2003-02-13,0.047000
2009-06-16,0.034000
2022-05-16,0.030000
1999-11-15,0.047000
2019-08-15,0.031000
2024-09-16,0.039000
2024-10-15,0.035000
2005-05-16,0.040000
2010-02-26,0.030000
2017-05-15,0.031000
2019-09-16,0.031000
2005-11-15,0.040000
2006-05-15,0.043000
2006-08-15,0.039000
2004-05-17,0.037000
1996-05-15,0.051000
1997-04-15,0.045000
2015-04-15,0.029000
2018-06-15,0.029000
2025-04-15,0.034000
2026-05-15,0.035000
1994-01-31,0.054000
2011-01-31,0.035000
2013-01-31,0.033000
2023-09-15,0.036000
2025-11-17,0.034000
2026-07-15,0.040000
1990-09-17,0.064000
1998-11-16,0.049000
2012-07-31,0.035000
1994-06-15,0.055000
2022-03-15,0.028000
2022-11-15,0.033000
2017-01-17,0.035000
2011-03-31,0.036000
2006-02-15,0.041000
2017-12-15,0.050000
2021-06-15,0.030000
1999-08-16,0.049000
1993-11-30,0.055000
1999-04-15,0.048000
1999-05-17,0.049000
2009-10-15,0.035000
1987-10-15,0.065000
2019-12-16,0.036000
2017-09-15,0.033000
2006-04-13,0.038000
2016-03-15,0.034000
2018-03-15,0.028000
1993-10-29,0.054000
2001-01-16,0.058000
2008-07-15,0.039000
2012-05-31,0.034000
2019-06-17,0.035000
2025-02-18,0.041000
1993-04-30,0.055000
1995-06-14,0.053000
1996-09-30,0.052000
2011-07-29,0.036000
1990-04-16,0.064000
2015-03-16,0.029000
2020-10-15,0.029000
2011-12-30,0.036000
2016-05-16,0.032000
2021-11-15,0.028000
2024-01-16,0.042000
1994-07-15,0.049000
1998-01-15,0.044000
2011-09-30,0.035000
2016-08-15,0.033000
1990-07-16,0.063000
1992-09-30,0.055000
1994-02-28,0.050000
1995-03-15,0.049000
1998-12-16,0.046000
2013-02-28,0.030000
2014-09-30,0.032000
1991-04-15,0.058000
2005-09-15,0.039000
2008-11-14,0.046000
2010-11-30,0.032000
2014-03-31,0.035000
1988-05-16,0.064000
2004-03-15,0.040000
2002-12-16,0.051000
2008-09-15,0.038000
2012-08-31,0.034000
2002-08-14,0.047000
2024-04-15,0.037000
2026-01-15,0.036000
2003-12-31,0.044000
2005-06-15,0.038000
2015-09-15,0.034000
2025-03-17,0.032000
2025-07-15,0.035000
1996-11-15,0.052000
2010-09-30,0.032000
2020-02-18,0.036000
2023-04-17,0.038000
2009-08-14,0.035000
2023-07-17,0.038000
1997-02-14,0.050000
1995-09-14,0.054000
1997-01-15,0.048000
1997-05-15,0.047000
2009-12-15,0.033000
2013-03-28,0.033000
2024-03-15,0.034000
1991-08-16,0.059000
1998-08-17,0.056000
2000-08-15,0.065000
2004-01-15,0.043000
2017-07-17,0.035000
1994-12-15,0.051000
2016-04-15,0.033000
1998-07-15,0.058000
1995-12-15,0.046000
1996-01-15,0.049000
2003-09-15,0.047000
2006-01-13,0.037000
2018-05-15,0.029000
2023-10-16,0.041000
1990-02-15,0.061000
1990-10-16,0.061000
2009-07-15,0.035000
2025-10-15,0.036000
1989-05-15,0.059000
2020-03-16,0.026000
2026-02-17,0.038000
2026-06-15,0.039000
1988-02-16,0.067000
2023-01-17,0.039000
2005-01-14,0.057000
1991-05-15,0.058000
1992-11-30,0.055000
1998-04-15,0.059000
1998-05-29,0.059000
2005-04-15,0.039000
1990-11-16,0.063000
2012-01-31,0.033000
1989-12-18,0.063000
2003-08-15,0.049000
2008-06-16,0.041000
2014-10-15,0.032000
2003-04-15,0.052000
2021-02-16,0.033000
1995-08-14,0.054000
2021-10-15,0.027000
2002-01-31,0.014000
2021-09-15,0.027000
1988-03-15,0.057000
1999-02-16,0.053000
2007-12-17,0.066000
2009-05-15,0.033000
2016-09-30,0.033000
1992-01-15,0.056000
2009-04-17,0.037000
2020-04-15,0.031000
2023-05-15,0.032000
2008-03-17,0.044000
2005-03-15,0.035000
2006-06-14,0.041000
2016-06-15,0.030000
2017-06-15,0.048000
2023-06-15,0.037000
2025-08-15,0.036000
1999-01-14,0.047000
2016-12-29,0.071000
2019-07-15,0.031000
1997-12-15,0.039000
2018-01-16,0.035000
1998-06-15,0.061000
2008-12-31,0.004000
2013-08-30,0.034000
2020-01-15,0.033000
1990-03-15,0.057000
1999-03-15,0.042000
2013-12-31,0.032000
2020-11-16,0.032000
2023-03-15,0.033000
1999-06-15,0.044000
2001-11-15,0.054000
2014-04-30,0.035000
1999-10-15,0.046000
2014-07-31,0.035000
1991-12-16,0.058000
1991-02-15,0.056000
2015-07-15,0.030000
2003-06-16,0.050000
2007-09-17,0.040000
2012-04-30,0.032000
2002-11-15,0.054000
2009-09-15,0.037000
2013-06-28,0.032000
2016-07-15,0.032000
2016-10-17,0.035000
2018-07-16,0.034000
2020-12-15,0.048000
2025-09-15,0.036000
2001-08-15,0.054000
1995-11-15,0.049000
1996-06-14,0.055000
2002-07-15,0.046000
2012-06-29,0.032000
2015-02-13,0.029000
2018-02-15,0.032000
1995-04-13,0.051000
1995-10-16,0.054000
1996-12-16,0.049000
2015-05-15,0.030000
1992-08-31,0.055000
2010-03-31,0.033000
2011-05-31,0.035000
2024-05-15,0.037000
2007-02-14,0.037000
2025-01-15,0.041000
2009-02-12,0.036000
2002-05-15,0.046000
1998-02-27,0.052000
1995-01-16,0.050000
1993-06-30,0.058000
1990-01-16,0.062000
2008-08-15,0.041000
2008-10-15,0.039000
1989-08-16,0.061000
1992-02-14,0.057000
2005-07-15,0.037000
2025-12-15,0.032000
1989-02-15,0.062000
2001-03-15,0.054000
2013-04-30,0.031000
2018-10-15,0.024000
1998-09-15,0.060000
2019-01-15,0.025000
2022-01-14,0.030000
2024-07-15,0.035000
2006-11-15,0.102000
2014-12-15,0.040000
2007-10-16,0.059000
1997-11-17,0.051000
2025-05-15,0.043000
1996-02-14,0.048000
1989-07-17,0.066000
1996-07-15,0.047000
1989-04-14,0.069000
2024-08-15,0.038000
2007-07-16,0.034000
2010-06-30,0.033000
2018-04-16,0.031000
2019-05-15,0.035000
2020-05-15,0.030000
1993-03-31,0.055000
1988-06-15,0.062000
1995-05-15,0.052000
2004-04-15,0.038000
2012-10-31,0.034000
1987-11-16,0.069000
2006-10-16,0.043000
2000-05-15,0.068000
2000-07-31,0.064000
2015-06-15,0.031000
2022-12-15,0.053000
1994-09-15,0.051000
1990-12-17,0.063000
1993-01-29,0.055000
2003-07-15,0.047000
2012-09-28,0.033000
2014-05-30,0.036000
2017-11-15,0.032000
1988-09-15,0.066000
2021-07-15,0.029000
1992-04-16,0.055000
2001-12-31,0.053000
2010-01-29,0.034000
1989-10-16,0.063000
1993-02-26,0.055000
2002-04-15,0.048000
1987-08-17,0.071000
2022-07-15,0.032000
1993-12-31,0.055000
2010-10-29,0.033000
2024-02-15,0.037000
1993-09-30,0.055000
2007-03-14,0.033000
1993-05-28,0.055000
1992-07-31,0.055000
2005-02-15,0.043000
2021-03-15,0.028000
1991-03-15,0.056000
2009-11-16,0.037000
2003-10-15,0.045000
2014-06-30,0.033000
2015-08-14,0.032000
2000-02-15,0.055000
2004-07-15,0.036000
2011-06-30,0.035000
2013-07-31,0.034000
1990-08-15,0.061000
2021-08-16,0.030000
2022-09-15,0.033000
2005-08-15,0.038000
2017-04-17,0.036000
2020-08-17,0.032000
2000-01-14,0.048000
2026-04-15,0.034000
1992-05-15,0.055000
1997-09-15,0.051000
1999-07-15,0.046000
1999-12-15,0.046000
2001-04-16,0.062000
2018-09-17,0.031000
1988-08-15,0.065000
1987-07-15,0.063000
2004-08-16,0.039000
2014-02-28,0.031000
2019-11-15,0.030000
2024-06-17,0.040000
2024-12-16,0.076000
2002-02-13,0.055000
1997-03-17,0.048000
2004-11-15,0.039000
2018-08-15,0.027000
1991-07-16,0.053000
1997-07-15,0.047000
2003-01-15,0.058000
2003-05-15,0.047000
2012-11-30,0.032000
2015-11-16,0.036000
2017-02-15,0.031000
2020-09-15,0.028000
1988-04-15,0.063000
2021-01-15,0.037000
2000-12-14,0.052000
2002-06-21,0.600000
2006-07-17,0.046000
2009-03-16,0.037000
1994-05-16,0.054000
1996-08-15,0.052000
2006-03-15,0.036000
2019-04-15,0.037000
2026-03-16,0.031000
1990-06-15,0.062000
1989-09-15,0.061000
2008-01-15,0.039000
2012-12-31,0.032000
2015-10-15,0.034000
2016-12-15,0.031000
1994-03-31,0.055000
2013-10-31,0.036000
2007-01-16,0.042000
2020-07-15,0.029000
2000-03-15,0.052000
1991-10-15,0.054000
2014-01-31,0.034000
1990-05-16,0.063000
1988-10-17,0.063000
1992-06-15,0.055000
1992-10-30,0.055000
1996-10-31,0.047000
2002-03-14,0.044000
2004-02-13,0.042000
2004-09-15,0.037000
1987-09-15,0.061000
2016-09-15,0.033000
2010-05-28,0.032000
2008-05-15,0.040000
2013-11-29,0.035000
2021-05-17,0.033000
2003-11-14,0.044000
1999-09-15,0.045000
2001-02-15,0.055000
2022-04-18,0.030000
1989-03-15,0.058000
2011-11-30,0.036000
2014-11-14,0.031000
2004-10-15,0.038000
2004-12-31,0.007000
2008-02-13,0.037000
2008-12-16,0.042000
1987-12-15,0.062000
2006-09-15,0.041000
2011-04-29,0.034000
2021-04-15,0.031000
2001-07-16,0.057000
1994-04-14,0.055000
2007-08-15,0.036000
2012-12-17,0.002000
1993-07-30,0.057000
1998-03-16,0.061000
2004-12-15,0.038000
2010-08-31,0.033000
2011-02-28,0.032000
2012-02-29,0.032000
2016-02-12,0.030000
2023-08-15,0.034000
1993-08-31,0.058000
1992-12-31,0.055000
1994-11-15,0.050000
1989-11-16,0.063000
2001-06-15,0.059000
2015-12-15,0.034000
2000-10-16,0.054000
2017-08-15,0.032000
2020-06-15,0.033000
2023-11-15,0.036000
2015-01-15,0.030000
2014-08-29,0.034000
2017-10-16,0.033000
2018-12-17,0.085000
2008-04-15,0.042000
2009-01-14,0.039000
2004-06-15,0.033000
1997-06-16,0.047000
1996-04-15,0.051000
2000-04-13,0.061000
2013-05-31,0.033000
2021-12-15,0.036000
2023-12-15,0.041000
1988-11-15,0.060000
2019-02-15,0.027000
1988-12-15,0.063000