f/overrides/event-backup/coltx-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

535 lines
10 KiB
Plaintext

Date,Dividends
2011-01-31,0.050000
2010-07-30,0.049000
1985-08-30,0.100000
1987-06-30,0.083000
1997-09-30,0.060000
2003-04-30,0.052000
2008-12-31,0.049000
2025-09-30,0.035000
1986-08-29,0.088000
1987-07-31,0.083000
2003-01-31,0.052000
2015-01-30,0.050000
2021-12-31,0.031000
1988-08-26,0.083000
1994-09-30,0.066000
1999-08-31,0.020000
2023-06-30,0.033000
2011-09-30,0.049000
2021-02-26,0.029000
2024-12-31,0.036000
1986-01-31,0.090000
1999-02-26,0.017000
2000-03-20,0.039000
2003-03-31,0.052000
2011-06-30,0.050000
1992-11-30,0.075000
2001-04-30,0.051000
2002-12-31,0.053000
2021-10-29,0.030000
1995-04-28,0.064000
2019-12-31,0.037000
2020-06-30,0.032000
1985-04-30,0.100000
1998-09-21,0.039000
1999-09-30,0.018000
1993-02-26,0.073000
1997-11-28,0.060000
2000-08-18,0.038000
1992-01-31,0.075000
1992-04-30,0.075000
1998-05-29,0.060000
2005-07-29,0.052000
2022-08-31,0.032000
2000-12-20,0.039000
2002-06-28,0.054000
2016-11-30,0.045000
1986-05-30,0.088000
1994-05-31,0.066000
2004-05-28,0.048000
1985-01-31,0.100000
1994-10-31,0.066000
1995-02-28,0.064000
2005-08-31,0.051000
1996-10-31,0.062000
2017-02-28,0.042000
2018-05-31,0.047000
1993-03-31,0.073000
2011-08-31,0.049000
2015-07-31,0.049000
2017-11-30,0.042000
2026-02-27,0.033000
1990-10-31,0.083000
2009-04-30,0.049000
2011-10-31,0.049000
2016-12-30,0.048000
2017-12-29,0.044000
1991-09-30,0.080000
2011-02-28,0.049000
2025-12-31,0.036000
1991-02-01,0.080000
1992-09-30,0.075000
2026-04-30,0.040000
2012-10-31,0.048000
2014-05-30,0.051000
2004-03-31,0.048000
2005-04-29,0.051000
2016-08-31,0.046000
1992-10-30,0.075000
1995-10-31,0.064000
1997-02-28,0.062000
1999-07-30,0.020000
2001-08-31,0.055000
1985-11-29,0.100000
1996-06-28,0.062000
2003-05-30,0.051000
2001-10-31,0.054000
2005-09-30,0.051000
2009-08-31,0.049000
2012-05-31,0.049000
2014-08-29,0.050000
1989-03-31,0.083000
1991-07-31,0.080000
1992-03-31,0.075000
1994-04-29,0.066000
2002-11-29,0.053000
1992-05-29,0.075000
2003-11-28,0.046000
2004-10-29,0.051000
2009-09-30,0.049000
2015-12-31,0.048000
2002-08-30,0.054000
2014-01-31,0.050000
2019-05-31,0.048000
1995-05-31,0.064000
1999-07-20,0.037000
2023-10-31,0.035000
1995-12-22,0.064000
2012-06-29,0.046000
2016-05-31,0.048000
2019-10-31,0.038000
1984-12-31,0.103000
1988-12-30,0.083000
2000-07-20,0.039000
2004-11-30,0.053000
2013-05-31,0.048000
2021-09-30,0.029000
1991-02-28,0.080000
2002-10-31,0.053000
2010-05-28,0.051000
2019-01-31,0.049000
2019-11-29,0.036000
1995-06-30,0.064000
2000-04-20,0.036000
2006-02-28,0.051000
2015-10-30,0.048000
2020-09-30,0.032000
1992-06-30,0.075000
2000-07-31,0.021000
2002-03-28,0.054000
2014-06-30,0.049000
2025-01-31,0.037000
1987-08-28,0.084000
2005-03-31,0.051000
2024-06-28,0.039000
1988-03-25,0.088000
2016-03-31,0.047000
2023-04-28,0.033000
1990-01-30,0.083000
2006-08-31,0.050000
2024-09-30,0.035000
2019-12-03,0.073000
2020-11-30,0.032000
1985-02-28,0.100000
1989-02-27,0.083000
1996-09-30,0.062000
2007-11-30,0.049000
2016-06-30,0.046000
1993-08-31,0.070000
2017-04-28,0.042000
2021-06-30,0.030000
2012-12-31,0.048000
2022-06-30,0.031000
1986-06-30,0.088000
1996-08-02,0.006000
2002-05-31,0.054000
2009-06-30,0.049000
2010-11-30,0.048000
2026-06-30,0.038000
1989-04-28,0.083000
1998-11-30,0.020000
2006-10-31,0.049000
2009-01-30,0.049000
2012-04-30,0.047000
2000-09-29,0.020000
2001-09-28,0.055000
2012-01-31,0.050000
2015-05-29,0.049000
2018-10-31,0.048000
1997-05-30,0.061000
1998-12-22,0.298000
2001-05-31,0.043000
2007-08-31,0.049000
2002-09-30,0.054000
2002-07-31,0.054000
2008-05-30,0.048000
2015-03-31,0.050000
1987-04-30,0.083000
2001-01-31,0.021000
2004-12-31,0.051000
2017-01-31,0.047000
2024-02-29,0.033000
1989-06-30,0.083000
1990-09-28,0.083000
2004-02-27,0.048000
2014-03-31,0.051000
2018-03-29,0.048000
1999-04-30,0.020000
2006-12-29,0.049000
2023-07-31,0.037000
1993-09-30,0.070000
1995-09-29,0.064000
1996-03-29,0.064000
1997-04-30,0.062000
1998-01-30,0.060000
1991-12-31,0.075000
2020-05-29,0.033000
2026-07-31,0.040000
1996-11-29,0.062000
2001-12-31,0.054000
2003-09-30,0.049000
2008-09-30,0.049000
2010-09-30,0.049000
2018-02-28,0.040000
1994-03-31,0.066000
1998-07-23,0.060000
1999-09-20,0.036000
2006-09-29,0.050000
2013-08-30,0.049000
2002-02-28,0.054000
2019-08-30,0.039000
2021-03-31,0.031000
1985-03-29,0.100000
1987-09-30,0.085000
2008-01-31,0.052000
2009-07-31,0.048000
2025-06-30,0.035000
1994-08-31,0.066000
1986-12-31,0.088000
1999-05-28,0.020000
2003-10-31,0.046000
2005-06-30,0.051000
2024-04-30,0.035000
1986-11-28,0.088000
2000-06-20,0.037000
2000-04-28,0.019000
2006-05-31,0.050000
2014-04-30,0.050000
2018-11-30,0.054000
2020-07-31,0.033000
2001-11-30,0.054000
2005-10-31,0.051000
2006-06-30,0.051000
1987-03-31,0.085000
1991-10-31,0.080000
1992-08-31,0.075000
1994-01-31,0.066000
2001-02-28,0.057000
2017-09-29,0.043000
2025-04-30,0.036000
2026-05-29,0.041000
1986-07-31,0.088000
1987-10-30,0.086000
1998-09-30,0.020000
2013-10-31,0.049000
2020-02-28,0.033000
2019-02-28,0.044000
1988-09-28,0.083000
1997-06-30,0.061000
1999-08-20,0.036000
2007-09-28,0.049000
2016-10-31,0.046000
1985-07-31,0.100000
1990-06-29,0.083000
2004-04-30,0.048000
2019-04-30,0.047000
2025-05-30,0.037000
2006-07-31,0.050000
2013-07-31,0.049000
2018-06-29,0.042000
1987-05-29,0.083000
1990-02-26,0.083000
1991-05-31,0.080000
2000-01-20,0.054000
2003-12-31,0.049000
2018-07-31,0.043000
2022-01-31,0.030000
2000-09-20,0.038000
2007-05-31,0.050000
2026-03-31,0.037000
1994-11-30,0.065000
2005-01-31,0.050000
2011-03-31,0.049000
2024-07-31,0.042000
2022-12-30,0.036000
1990-08-31,0.083000
2000-08-31,0.021000
2007-01-31,0.050000
2009-11-30,0.049000
2018-04-30,0.050000
1999-03-22,0.043000
2023-01-31,0.036000
2025-02-28,0.033000
2014-02-28,0.046000
2017-10-31,0.043000
1986-04-30,0.088000
2004-01-30,0.049000
2021-04-30,0.030000
1996-12-27,0.067000
2000-11-30,0.020000
2011-11-30,0.047000
2014-12-31,0.047000
2018-09-28,0.041000
1993-01-29,0.073000
1996-07-31,0.062000
1996-08-30,0.062000
2014-07-31,0.050000
2008-11-28,0.049000
2022-09-30,0.032000
1990-04-30,0.083000
1994-12-23,0.064000
2007-10-31,0.049000
2010-08-31,0.049000
2025-08-29,0.037000
1989-11-30,0.083000
1993-12-27,0.066000
2007-03-30,0.050000
2017-07-31,0.046000
2020-01-31,0.039000
1989-05-30,0.083000
2000-10-31,0.021000
2005-12-30,0.052000
2024-01-31,0.037000
2020-12-31,0.033000
2023-11-30,0.034000
1988-02-26,0.088000
1988-06-28,0.088000
1992-12-18,0.007000
2013-02-28,0.044000
2014-09-30,0.048000
1998-08-31,0.021000
1999-12-20,0.036000
1997-12-26,0.060000
2013-12-31,0.050000
2015-02-27,0.045000
1985-05-31,0.100000
1989-08-30,0.083000
1998-03-31,0.060000
2001-03-30,0.061000
2002-01-31,0.054000
2015-09-30,0.047000
2021-05-28,0.031000
1998-02-27,0.060000
2008-03-31,0.049000
2009-02-27,0.055000
2010-03-31,0.049000
2012-11-30,0.046000
1997-08-29,0.061000
2003-08-29,0.050000
2007-07-31,0.049000
2006-01-31,0.051000
2013-09-30,0.046000
2016-01-29,0.048000
2016-09-30,0.046000
1985-10-31,0.100000
1986-03-31,0.095000
1999-01-20,0.060000
2001-07-31,0.055000
2003-06-30,0.050000
2011-12-30,0.047000
2021-12-03,0.070000
2024-10-31,0.036000
1990-05-31,0.083000
2000-06-30,0.019000
2005-02-28,0.051000
2009-05-29,0.049000
2011-07-29,0.052000
2009-10-30,0.049000
1991-03-28,0.080000
1996-01-31,0.064000
1999-11-22,0.035000
2000-10-20,0.039000
2005-05-31,0.052000
1990-03-30,0.083000
1995-01-31,0.064000
2003-07-31,0.050000
1988-05-27,0.088000
1993-04-30,0.073000
2017-06-30,0.040000
2020-08-31,0.033000
2016-02-29,0.045000
2022-02-28,0.026000
1989-10-30,0.083000
1993-10-29,0.070000
1999-05-20,0.039000
2004-07-30,0.050000
2006-11-30,0.048000
1986-09-30,0.088000
1994-06-30,0.066000
2007-06-29,0.049000
2010-02-26,0.049000
2014-11-28,0.049000
1987-12-30,0.088000
1991-08-30,0.080000
2005-11-30,0.051000
2012-07-31,0.048000
2024-08-30,0.036000
1986-10-31,0.088000
1999-10-29,0.019000
2017-08-31,0.044000
1988-04-27,0.088000
1999-03-31,0.021000
2008-06-30,0.048000
2022-05-31,0.032000
2022-10-31,0.033000
2023-03-31,0.034000
2023-08-31,0.034000
1988-10-31,0.083000
2000-02-29,0.017000
2004-06-30,0.050000
2014-10-31,0.050000
2020-03-31,0.036000
1995-11-30,0.064000
2000-05-31,0.021000
2007-02-28,0.049000
2012-09-28,0.047000
2025-07-31,0.039000
1989-09-29,0.083000
1990-12-31,0.080000
2023-02-28,0.031000
2010-06-30,0.050000
2013-03-28,0.048000
1996-04-30,0.062000
1997-12-18,0.008000
2000-11-20,0.038000
2004-08-31,0.050000
2004-09-30,0.050000
1997-10-31,0.060000
1998-07-31,0.021000
1999-10-20,0.036000
2017-03-31,0.047000
1994-02-28,0.066000
1998-08-24,0.039000
1999-02-22,0.038000
2019-06-28,0.046000
2020-04-30,0.033000
1997-01-31,0.062000
2007-12-31,0.049000
1995-03-31,0.064000
1989-07-31,0.083000
1995-08-31,0.064000
1999-06-21,0.037000
2022-07-29,0.034000
2023-05-31,0.034000
2015-06-30,0.048000
1989-12-29,0.083000
2000-01-31,0.020000
2010-10-29,0.047000
2012-02-29,0.046000
2012-03-30,0.049000
1988-11-30,0.083000
2008-04-30,0.049000
2025-03-31,0.037000
1987-11-30,0.088000
2018-12-31,0.049000
2020-10-30,0.032000
1991-06-28,0.080000
1993-07-30,0.070000
1997-07-31,0.061000
2010-12-31,0.049000
2025-11-28,0.035000
1996-02-29,0.064000
2002-04-30,0.054000
2013-06-28,0.047000
2013-11-29,0.048000
1990-07-31,0.083000
1992-02-28,0.075000
2006-04-28,0.050000
2022-11-30,0.034000
1990-11-30,0.083000
1994-07-29,0.066000
1999-01-29,0.021000
2008-10-31,0.049000
2015-08-31,0.049000
2022-04-29,0.032000
1985-12-31,0.100000
1991-04-30,0.080000
1998-06-30,0.060000
2009-03-31,0.049000
2015-04-30,0.048000
2006-03-31,0.049000
2015-11-30,0.047000
2019-07-31,0.047000
2021-08-31,0.030000
1999-04-20,0.039000
2024-03-28,0.036000
1999-11-30,0.018000
1985-06-28,0.100000
1991-11-29,0.080000
1999-06-30,0.018000
2024-11-29,0.035000
1986-02-28,0.095000
1987-01-30,0.085000
2000-02-18,0.036000
2001-06-29,0.056000
1998-04-30,0.060000
1998-10-30,0.021000
2008-08-29,0.049000
2019-03-29,0.049000
2021-07-30,0.031000
2023-09-29,0.033000
1988-07-28,0.088000
1993-11-30,0.070000
2007-04-30,0.049000
1995-07-31,0.064000
1996-05-31,0.062000
2000-03-31,0.020000
2018-08-31,0.043000
2024-05-31,0.038000
2011-04-29,0.049000
2011-05-31,0.048000
2012-08-31,0.048000
2017-05-31,0.048000
2009-12-31,0.049000
2013-04-30,0.046000
1992-12-24,0.066000
1993-06-30,0.070000
2022-03-31,0.031000
1987-02-27,0.085000
1988-01-29,0.088000
1989-01-31,0.083000
1992-07-31,0.075000
2018-01-31,0.044000
1998-10-22,0.040000
2003-02-28,0.052000
2010-01-29,0.049000
2023-12-29,0.035000
2026-01-30,0.037000
2008-02-29,0.049000
2013-01-31,0.048000
2019-09-30,0.037000
2020-12-02,0.044000
2021-01-29,0.031000
1997-03-31,0.062000
2021-11-30,0.029000
2025-10-31,0.036000
2008-07-31,0.049000
2016-07-29,0.046000
1985-09-30,0.100000
1993-05-28,0.073000
1998-11-20,0.039000
2000-05-19,0.038000
2001-01-19,0.058000
2016-04-29,0.046000