f/overrides/event-backup/mgfix-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

497 lines
9.7 KiB
Plaintext

Date,Dividends
2003-03-26,0.100000
2017-06-27,0.069000
1992-05-29,0.130000
2006-04-25,0.085000
1997-08-26,0.120000
2001-05-25,0.120000
2015-09-25,0.057000
2002-07-26,0.100000
2014-09-25,0.060000
2024-02-27,0.058000
2010-08-26,0.090000
2016-06-27,0.085000
2021-09-28,0.033000
2025-08-27,0.072000
2002-06-25,0.110000
2009-02-24,0.105000
2004-05-25,0.110000
2008-04-25,0.110000
2010-10-26,0.095000
1986-10-31,0.160000
1992-06-30,0.120000
1994-12-30,0.380000
1998-02-24,0.120000
2000-01-26,0.120000
2015-03-26,0.057000
2021-10-27,0.034000
1985-08-30,0.190000
2001-06-26,0.120000
2017-03-28,0.067000
1986-12-31,0.150000
1990-02-28,0.150000
1993-07-30,0.120000
1993-10-29,0.120000
1997-06-25,0.130000
2008-01-28,0.110000
2011-08-26,0.093000
2004-02-24,0.080000
2014-01-28,0.077000
2019-06-26,0.081000
2025-06-26,0.069000
2005-09-27,0.075000
2013-12-26,0.090000
2019-05-29,0.084000
2024-07-29,0.065000
1985-09-30,0.200000
2003-11-24,0.085000
2006-07-26,0.085000
2014-06-25,0.065000
2023-01-27,0.052000
2026-03-27,0.076000
1993-03-31,0.120000
1996-03-26,0.120000
2005-01-26,0.075000
2009-06-25,0.115000
2025-04-28,0.068000
2016-04-26,0.078000
2022-03-29,0.034000
2012-11-27,0.083000
2017-04-25,0.064000
1988-06-30,0.140000
1996-11-25,0.100000
2004-07-27,0.080000
2005-03-28,0.080000
2017-10-26,0.053000
1992-03-31,0.130000
2010-07-27,0.095000
2017-01-26,0.079000
1989-03-31,0.150000
1998-06-25,0.110000
2001-01-26,0.120000
2003-05-27,0.080000
2008-12-26,0.405000
2014-03-26,0.075000
2015-10-27,0.068000
1990-06-29,0.150000
1992-07-31,0.110000
1995-11-27,0.110000
1996-09-25,0.110000
2000-10-26,0.130000
2003-04-25,0.090000
2015-08-26,0.057000
1985-11-29,0.180000
1986-02-28,0.190000
2001-09-25,0.144000
2002-04-25,0.120000
2007-04-25,0.095000
1993-05-28,0.120000
2007-05-25,0.095000
2015-07-28,0.055000
2017-02-23,0.072000
1992-01-31,0.140000
2000-08-28,0.290000
2010-09-27,0.090000
2017-08-28,0.070000
2002-09-25,0.100000
1988-09-30,0.140000
1996-01-26,0.110000
2002-10-28,0.100000
1988-08-31,0.150000
1990-08-31,0.150000
1999-11-24,0.120000
2006-10-26,0.100000
1986-11-28,0.170000
2001-04-25,0.120000
2009-08-26,0.115000
2020-08-27,0.076000
1991-04-30,0.140000
2014-11-24,0.060000
2004-10-26,0.080000
2013-02-25,0.064000
2014-04-25,0.074000
2020-10-28,0.079000
1994-10-26,0.130000
2000-02-24,0.120000
2001-11-27,0.130000
1998-03-26,0.120000
2015-11-24,0.068000
1986-06-30,0.180000
1989-09-29,0.170000
1992-08-31,0.120000
1997-10-28,0.110000
1999-08-26,0.110000
2001-03-27,0.130000
2002-03-25,0.110000
2011-03-28,0.100000
1991-01-31,0.160000
2015-01-27,0.064000
2023-02-24,0.046000
1987-02-27,0.150000
2007-08-28,0.100000
2009-09-25,0.115000
2014-02-25,0.073000
1987-09-30,0.140000
1991-02-28,0.160000
1992-10-30,0.120000
2007-06-26,0.100000
2020-09-28,0.077000
2022-06-28,0.036000
1988-11-30,0.140000
2015-06-25,0.026000
2019-12-16,0.241000
2026-05-27,0.077000
2006-03-28,0.085000
2018-04-26,0.068000
2022-10-27,0.044000
1996-07-26,0.130000
2001-10-26,0.120000
2005-04-26,0.065000
2012-04-25,0.090000
1995-08-28,0.110000
2001-08-28,0.110000
2005-11-25,0.080000
2020-12-16,0.127000
1997-09-25,0.110000
2011-02-23,0.110000
2016-10-26,0.090000
2022-02-24,0.031000
2024-04-26,0.064000
1985-05-31,0.170000
2005-02-23,0.080000
2013-06-25,0.068000
2021-12-15,0.612000
2017-11-27,0.063000
2022-01-27,0.031000
1986-03-31,0.180000
2002-12-26,0.090000
2008-03-26,0.110000
2017-12-27,0.287000
1989-05-31,0.150000
2016-01-26,0.057000
2019-02-26,0.068000
2021-11-26,0.033000
2023-11-28,0.058000
2025-07-29,0.072000
1990-12-31,0.160000
2000-07-26,0.130000
2012-10-26,0.085000
2016-09-27,0.085000
2024-12-16,0.066000
1985-04-30,0.170000
2004-12-28,0.192000
2024-11-26,0.065000
2024-06-26,0.063000
1992-12-31,0.120000
1995-04-25,0.130000
2000-06-27,0.150000
2009-05-26,0.115000
2020-01-29,0.074000
1988-02-29,0.160000
1995-03-28,0.140000
2009-04-27,0.110000
2013-09-25,0.080000
1986-09-30,0.160000
2000-03-28,0.120000
2001-02-23,0.120000
2021-04-28,0.019000
1987-12-31,0.150000
2003-07-28,0.090000
1987-03-31,0.160000
2013-04-25,0.067000
1991-06-28,0.140000
1992-04-30,0.130000
1999-05-25,0.110000
2006-01-26,0.080000
2000-05-25,0.140000
2022-07-27,0.040000
1988-03-31,0.160000
1998-10-27,0.130000
2002-08-27,0.100000
2009-10-27,0.105000
2015-04-27,0.062000
1987-05-29,0.140000
2016-11-25,0.083000
2018-07-27,0.067000
2018-02-26,0.060000
1987-01-30,0.160000
1995-10-26,0.110000
2004-08-26,0.080000
2008-08-26,0.123000
2012-08-28,0.085000
1989-10-31,0.170000
2003-02-26,0.100000
2023-05-26,0.051000
1992-11-30,0.120000
1999-07-28,0.100000
2003-08-26,0.090000
2020-06-26,0.080000
1988-10-31,0.150000
1999-01-26,0.140000
2018-11-28,0.072000
2026-02-25,0.071000
1989-02-28,0.150000
2007-09-25,0.100000
2007-10-26,0.110000
2008-07-28,0.123000
2012-05-25,0.089000
1990-03-30,0.160000
2007-07-26,0.100000
2000-04-25,0.110000
2021-07-28,0.033000
1991-08-30,0.140000
2011-11-25,0.095000
1989-04-28,0.160000
2013-05-28,0.085000
1985-02-28,0.170000
1992-09-30,0.110000
2010-06-25,0.085000
2021-02-24,0.058000
2022-08-29,0.042000
2023-03-29,0.054000
2008-10-28,0.100000
2014-05-27,0.071000
1985-03-29,0.190000
1996-02-26,0.110000
2008-09-25,0.125000
2016-02-24,0.063000
2020-11-25,0.070000
2022-04-27,0.032000
2023-09-27,0.056000
1986-04-30,0.160000
1993-08-31,0.120000
1996-06-25,0.130000
1998-04-27,0.110000
2000-12-26,0.110000
2009-12-28,0.080000
1990-09-28,0.230000
2004-03-26,0.090000
2020-05-27,0.080000
2024-08-28,0.066000
1991-11-29,0.140000
1994-07-26,0.110000
2015-05-26,0.055000
2023-10-27,0.059000
2003-06-25,0.090000
2007-01-26,0.090000
2000-09-26,0.130000
2018-12-27,0.263000
2021-08-27,0.034000
2016-07-26,0.078000
2018-09-26,0.060000
2020-04-28,0.070000
2025-01-29,0.069000
2025-12-16,0.075000
2016-08-26,0.078000
1985-12-31,0.190000
1993-02-26,0.120000
1993-09-30,0.120000
1994-06-27,0.120000
2012-12-26,0.155000
2026-07-29,0.077000
1987-07-31,0.150000
1990-01-31,0.170000
2012-09-25,0.084000
2024-03-26,0.062000
2025-05-28,0.070000
1994-01-26,0.120000
2013-07-26,0.063000
2022-05-26,0.039000
1990-07-31,0.150000
1998-12-28,0.990000
2005-06-27,0.065000
2016-12-27,0.448000
2020-02-26,0.066000
1990-04-30,0.160000
2016-03-28,0.073000
2017-09-26,0.073000
2019-10-29,0.070000
2002-05-28,0.120000
2007-03-27,0.090000
2008-06-25,0.120000
1989-07-31,0.160000
1989-08-31,0.180000
1993-11-30,0.130000
1998-08-26,0.140000
1999-10-26,0.130000
1999-09-27,0.120000
1999-12-28,0.140000
2011-09-27,0.089000
2021-05-26,0.031000
2002-11-25,0.090000
2007-02-23,0.090000
2009-01-27,0.110000
2013-11-25,0.083000
2024-10-29,0.066000
1987-11-30,0.160000
1997-12-26,0.100000
2005-05-25,0.065000
2006-05-25,0.085000
2012-01-26,0.092000
2021-01-27,0.073000
2021-03-29,1.860000
2022-12-15,0.094000
1990-11-30,0.150000
1995-06-27,0.130000
1999-02-23,0.110000
2008-05-27,0.120000
2013-08-27,0.073000
1991-05-31,0.150000
2013-03-25,0.065000
1985-07-31,0.180000
1999-06-25,0.100000
2018-10-29,0.070000
1986-05-30,0.180000
1995-01-26,0.120000
1997-07-28,0.120000
1998-07-28,0.130000
2025-03-27,0.069000
1991-07-31,0.130000
1996-12-26,0.100000
1997-01-28,0.100000
1999-03-26,0.130000
2023-08-29,0.052000
2004-06-25,0.110000
2006-08-28,0.095000
2011-05-25,0.098000
2023-04-26,0.051000
2025-11-25,0.075000
2023-06-28,0.050000
1985-10-31,0.180000
1997-02-25,0.110000
2009-07-28,0.115000
2010-12-28,0.170000
2021-06-28,0.030000
1994-03-28,0.110000
2002-02-25,0.100000
2006-02-23,0.085000
2012-02-24,0.090000
2024-01-29,0.058000
1988-12-30,0.160000
1995-07-26,0.120000
2005-10-26,0.075000
2009-03-26,0.105000
2014-08-26,0.064000
1989-01-31,0.150000
2010-11-24,0.095000
2016-05-25,0.085000
2019-03-27,0.101000
1987-04-30,0.160000
1999-04-27,0.140000
2003-12-26,0.325000
2018-03-27,0.065000
2014-10-28,0.058000
2025-10-29,0.075000
2026-04-28,0.077000
1988-05-31,0.160000
2001-07-26,0.120000
2011-10-26,0.093000
2012-06-26,0.081000
2013-01-28,0.080000
2017-05-25,0.062000
2026-06-26,0.074000
2018-06-27,0.068000
2024-09-26,0.064000
1994-08-26,0.110000
1995-05-25,0.130000
1998-09-25,0.130000
2008-11-24,0.143000
2018-01-29,0.064000
1989-12-29,0.170000
1997-04-25,0.130000
1992-02-28,0.130000
2001-12-26,0.120000
2005-07-26,0.070000
2025-02-26,0.065000
2000-11-27,0.120000
2004-01-27,0.080000
2005-12-27,0.237000
2019-09-26,0.074000
2006-12-26,0.120000
1991-12-31,0.140000
1993-06-30,0.110000
2003-10-28,0.090000
2004-09-27,0.075000
2004-11-24,0.075000
2012-07-26,0.087000
2015-02-24,0.056000
2017-07-26,0.070000
1985-01-31,0.150000
1989-11-30,0.160000
1995-02-23,0.130000
1995-12-26,0.110000
2002-01-28,0.100000
1991-10-31,0.140000
1993-12-28,0.180000
1996-10-28,0.100000
2010-03-26,0.093000
2024-05-29,0.064000
1988-07-29,0.140000
1998-11-24,0.110000
2011-01-26,0.110000
2019-07-29,0.079000
2007-12-26,0.130000
1990-10-31,0.150000
1991-03-28,0.150000
1991-09-30,0.130000
2019-11-26,0.079000
2010-01-26,0.100000
2013-10-28,0.080000
2026-01-28,0.076000
1987-08-31,0.160000
2007-11-27,0.115000
2020-07-29,0.081000
2006-06-27,0.085000
2010-02-23,0.087000
2019-01-29,0.079000
1989-06-30,0.150000
1990-05-31,0.160000
1994-09-27,0.120000
1996-08-27,0.110000
2004-04-27,0.100000
2022-09-28,0.043000
1987-10-30,0.140000
1994-02-23,0.120000
1994-04-26,0.110000
2012-03-27,0.094000
2018-05-29,0.070000
1988-01-29,0.160000
2005-08-26,0.065000
2006-11-27,0.100000
2010-05-25,0.093000
2022-11-28,0.044000
2023-12-14,0.063000
1997-03-25,0.120000
2011-12-27,0.101000
2014-07-28,0.069000
2020-03-27,0.072000
1986-08-29,0.170000
1993-01-29,0.120000
1996-05-28,0.120000
1988-04-29,0.150000
1993-04-30,0.120000
1998-01-27,0.100000
2014-12-26,0.283000
2023-07-27,0.053000
1995-09-26,0.120000
2009-11-24,0.095000
2019-04-26,0.107000
2008-02-26,0.105000
2011-07-26,0.093000
2015-12-28,0.468000
1986-01-31,0.180000
1994-05-25,0.120000
1994-11-25,0.140000
2011-04-26,0.100000
2011-06-27,0.093000
1998-05-26,0.110000
2003-01-28,0.100000
2006-09-26,0.095000
2018-08-29,0.066000
2025-09-26,0.072000
1996-04-25,0.120000
1997-05-27,0.130000
1997-11-24,0.120000
2003-09-25,0.100000
2019-08-28,0.076000