f/overrides/event-backup/mfwvx-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

501 lines
9.8 KiB
Plaintext

Date,Dividends
1989-05-03,0.060000
1996-08-30,0.050000
1999-11-30,0.048000
2009-09-30,0.034000
2012-10-31,0.032000
2017-12-29,0.030000
1989-04-05,0.060000
2006-02-28,0.040000
1994-07-29,0.052000
2003-03-31,0.046000
2009-03-31,0.037000
2014-02-28,0.028000
1998-12-31,0.047000
1992-06-30,0.058000
1998-09-30,0.047000
2010-06-30,0.034000
1986-01-02,0.071000
2000-09-29,0.047000
1999-09-30,0.048000
2002-04-30,0.047000
2009-02-27,0.033000
2012-05-31,0.034000
2022-10-31,0.022000
1995-02-28,0.051000
1997-08-29,0.049000
2000-08-31,0.048000
2003-09-30,0.042000
2011-04-29,0.035000
2013-05-31,0.032000
1993-09-30,0.054000
2006-08-31,0.039000
2009-06-30,0.035000
1997-02-28,0.051000
2016-12-30,0.033000
2007-06-29,0.039000
1997-10-31,0.049000
2021-12-31,0.019000
2023-08-31,0.026000
1991-02-01,0.059000
2002-03-28,0.047000
1989-12-05,0.059000
2003-07-31,0.042000
2011-05-31,0.035000
2023-01-31,0.024000
1987-06-01,0.064000
2023-09-29,0.025000
2010-08-31,0.035000
2008-10-31,0.035000
2009-07-31,0.035000
2012-09-28,0.031000
2016-11-30,0.032000
2018-12-31,0.030000
2021-06-30,0.024000
1986-12-01,0.068000
1995-04-28,0.051000
2004-09-30,0.042000
2019-04-30,0.029000
2020-06-30,0.024000
1984-12-03,0.077000
2007-02-28,0.038000
2018-11-30,0.028000
2026-07-31,0.028000
2006-06-30,0.040000
1998-10-30,0.047000
2011-08-31,0.036000
1985-06-03,0.067000
2017-07-31,0.030000
1995-09-29,0.051000
2000-12-29,0.047000
2006-11-30,0.111000
1996-06-28,0.050000
2012-08-31,0.033000
2013-10-31,0.030000
2017-08-31,0.030000
2017-11-30,0.029000
2007-10-31,0.039000
1997-01-31,0.051000
2004-06-30,0.041000
2008-06-30,0.036000
2018-05-31,0.029000
2022-09-30,0.022000
1996-07-31,0.050000
1987-10-01,0.064000
1996-10-31,0.050000
1986-02-03,0.071000
2022-12-30,0.024000
2017-03-31,0.033000
2023-03-31,0.024000
2024-08-30,0.026000
2016-10-31,0.031000
2008-03-31,0.039000
2009-12-31,0.036000
2010-02-26,0.032000
1989-09-06,0.059000
2004-07-30,0.042000
1992-09-30,0.057000
2010-04-30,0.031000
2012-06-29,0.032000
2010-03-31,0.036000
2017-05-31,0.031000
2026-01-30,0.028000
1992-12-31,0.056000
2015-09-30,0.029000
2015-12-31,0.030000
2025-08-29,0.027000
2004-03-31,0.041000
1992-04-30,0.058000
2001-10-31,0.047000
2012-02-29,0.032000
2025-11-28,0.027000
2025-12-31,0.028000
1990-12-05,0.058000
2014-12-31,0.029000
2019-11-29,0.027000
2005-02-28,0.042000
1989-03-03,0.060000
1998-05-29,0.048000
2006-05-31,0.040000
2014-07-31,0.029000
2014-10-31,0.029000
1987-05-01,0.065000
1991-05-01,0.058000
1991-09-03,0.058000
2001-05-31,0.047000
2004-02-27,0.042000
1990-02-05,0.059000
2002-11-29,0.047000
2004-05-28,0.041000
2017-01-31,0.033000
2026-06-30,0.027000
1995-10-31,0.051000
1991-06-03,0.058000
2005-09-30,0.040000
2014-01-31,0.032000
2025-02-28,0.023000
1985-08-01,0.071000
2012-12-31,0.033000
1997-11-28,0.049000
2015-06-30,0.029000
1990-05-03,0.058000
2006-04-28,0.040000
2011-03-31,0.036000
2016-03-31,0.030000
2024-01-31,0.026000
2025-01-31,0.026000
1985-04-01,0.070000
2021-08-31,0.019000
1994-04-29,0.052000
1994-11-30,0.052000
2004-10-29,0.042000
2007-01-31,0.038000
2011-11-30,0.034000
2023-05-31,0.025000
1988-08-03,0.065000
2005-11-30,0.040000
2014-09-30,0.028000
2022-04-29,0.021000
2023-02-28,0.021000
1990-04-04,0.058000
1993-02-26,0.051000
1993-05-28,0.049000
1991-03-01,0.059000
2014-06-30,0.029000
2024-10-31,0.025000
2026-03-31,0.028000
2010-09-30,0.034000
2014-04-30,0.030000
1996-01-31,0.050000
2009-04-30,0.035000
1988-11-03,0.065000
1998-06-30,0.048000
2015-05-29,0.029000
2019-09-30,0.027000
1985-05-01,0.072000
1998-11-30,0.047000
2021-02-26,0.022000
2021-07-30,0.021000
2026-05-29,0.028000
1998-04-30,0.049000
2002-01-31,0.047000
2020-10-30,0.023000
2021-04-30,0.021000
2026-04-30,0.027000
1991-01-02,0.059000
1994-01-31,0.052000
2007-08-31,0.039000
2017-09-29,0.028000
1987-02-02,0.065000
1990-09-06,0.059000
1995-01-31,0.051000
2000-06-30,0.048000
2011-01-31,0.036000
1987-07-01,0.062000
1988-04-06,0.064000
1993-01-29,0.052000
2002-10-31,0.047000
2018-10-31,0.029000
2025-10-31,0.028000
1986-06-02,0.067000
2006-03-31,0.040000
2011-10-31,0.034000
2019-10-31,0.028000
2005-05-31,0.041000
1996-02-29,0.050000
2003-12-31,0.042000
2007-04-30,0.038000
2012-01-31,0.034000
2017-02-28,0.030000
2019-08-30,0.028000
2020-05-29,0.026000
1991-10-01,0.058000
2016-06-30,0.029000
2006-10-31,0.039000
2024-02-29,0.025000
1995-11-30,0.051000
1993-04-30,0.054000
2003-10-31,0.042000
2017-04-28,0.032000
1989-08-03,0.059000
1993-12-31,0.053000
2006-12-29,0.038000
2025-05-30,0.026000
1985-10-01,0.071000
2000-02-29,0.048000
2001-07-31,0.047000
1986-11-03,0.067000
2022-03-31,0.019000
1987-03-02,0.063000
2000-03-31,0.048000
2007-12-31,0.039000
2016-07-29,0.029000
2022-07-29,0.021000
1986-05-01,0.067000
1994-03-31,0.052000
1995-12-29,0.051000
2009-11-30,0.041000
2017-10-31,0.030000
1986-10-01,0.065000
1999-12-31,0.048000
2016-01-29,0.030000
2019-12-31,0.028000
1999-02-26,0.047000
1988-02-03,0.065000
1994-05-31,0.052000
1995-07-31,0.051000
2024-07-31,0.026000
1985-03-01,0.070000
2001-12-31,0.047000
2010-11-30,0.035000
2013-09-30,0.031000
1989-02-03,0.060000
1993-08-31,0.054000
1996-09-30,0.050000
2015-11-30,0.029000
1990-11-05,0.060000
1995-06-30,0.051000
2013-11-29,0.029000
2016-09-30,0.028000
2017-06-30,0.029000
2023-06-30,0.024000
2024-06-28,0.025000
1991-11-01,0.058000
2005-08-31,0.040000
2008-11-28,0.148000
2026-02-27,0.025000
2005-01-31,0.042000
2003-08-29,0.042000
2019-07-31,0.029000
1991-04-01,0.058000
1988-01-04,0.064000
1992-10-30,0.056000
1995-08-31,0.051000
1996-05-31,0.050000
2011-12-30,0.034000
2024-12-31,0.027000
2025-09-30,0.027000
1987-12-01,0.064000
2002-08-30,0.047000
2005-04-29,0.041000
2021-09-30,0.019000
2001-03-30,0.047000
1996-03-29,0.050000
1994-12-30,0.052000
2023-04-28,0.025000
2025-04-30,0.026000
2018-08-31,0.029000
2002-07-31,0.047000
1991-08-01,0.058000
2001-01-31,0.047000
2013-04-30,0.030000
2018-07-31,0.029000
1990-07-05,0.059000
1994-08-31,0.052000
1997-03-31,0.051000
1998-07-31,0.048000
2004-01-30,0.042000
2012-11-30,0.031000
1992-01-31,0.059000
2019-01-31,0.030000
2008-05-30,0.037000
2013-02-28,0.029000
2015-08-31,0.029000
1999-05-28,0.047000
2011-02-28,0.033000
2013-07-31,0.032000
2020-12-31,0.023000
2010-12-31,0.037000
1999-10-29,0.048000
2010-10-29,0.035000
2012-07-31,0.033000
1985-12-02,0.073000
2005-10-31,0.040000
2007-03-30,0.038000
2020-04-30,0.026000
2005-06-30,0.040000
1994-09-30,0.052000
1998-08-31,0.047000
2006-01-31,0.040000
2020-08-31,0.024000
1987-09-01,0.063000
1991-07-01,0.058000
1993-06-30,0.055000
2013-01-31,0.032000
1990-01-04,0.058000
2015-07-31,0.029000
1989-11-03,0.059000
1990-08-03,0.060000
2021-05-28,0.021000
1985-09-03,0.069000
2025-03-31,0.026000
2000-04-28,0.048000
2003-06-30,0.045000
2007-07-31,0.039000
2013-06-28,0.031000
2023-11-30,0.025000
2024-04-30,0.025000
1993-03-31,0.054000
1989-07-06,0.058000
1998-01-30,0.049000
1999-03-31,0.047000
2014-08-29,0.028000
2020-09-30,0.022000
1985-02-05,0.078000
1999-07-30,0.047000
2000-05-31,0.048000
2016-08-31,0.029000
1986-09-02,0.068000
1997-07-31,0.048000
2004-12-31,0.042000
1995-05-31,0.051000
2003-05-30,0.045000
2004-04-30,0.041000
2011-09-30,0.034000
2015-02-27,0.027000
2018-01-31,0.032000
2019-03-29,0.030000
1994-06-30,0.052000
2001-09-28,0.047000
2009-08-31,0.034000
2013-08-30,0.032000
2018-04-30,0.028000
1987-08-03,0.062000
1986-03-03,0.069000
1996-04-30,0.050000
1996-11-29,0.050000
2012-03-30,0.034000
2015-04-30,0.029000
2016-05-31,0.030000
2018-03-29,0.030000
1985-11-01,0.068000
1991-11-29,0.058000
2022-08-31,0.022000
1989-10-04,0.059000
2005-12-30,0.040000
2020-07-31,0.024000
1992-08-31,0.058000
2000-07-31,0.047000
2001-08-31,0.047000
2001-11-30,0.047000
2008-04-30,0.038000
2011-06-30,0.034000
2020-11-30,0.022000
1997-12-31,0.049000
1997-04-30,0.051000
2019-05-31,0.030000
2020-01-31,0.028000
2022-11-30,0.022000
2025-07-31,0.027000
1998-02-27,0.048000
1990-06-05,0.058000
2015-03-31,0.030000
2018-06-29,0.028000
2019-06-28,0.027000
2022-01-31,0.018000
1988-09-06,0.065000
2020-03-31,0.028000
2022-02-28,0.017000
2022-06-30,0.020000
2014-11-28,0.028000
2014-03-31,0.031000
2018-02-28,0.028000
2009-01-30,0.037000
2005-03-31,0.041000
2016-02-29,0.028000
2018-09-28,0.028000
2021-03-31,0.024000
1997-09-30,0.049000
1998-03-31,0.048000
2006-09-29,0.039000
1992-05-29,0.058000
1996-12-31,0.050000
2000-11-30,0.047000
2009-05-29,0.036000
2010-07-30,0.036000
1989-06-05,0.060000
2021-10-29,0.018000
2002-02-28,0.047000
2002-12-31,0.047000
2005-07-29,0.040000
2008-12-31,0.037000
2010-05-28,0.036000
2023-10-31,0.026000
1988-05-04,0.064000
1999-01-29,0.047000
2000-10-31,0.047000
2002-05-31,0.047000
2003-04-30,0.046000
2013-12-31,0.031000
1993-10-29,0.050000
1988-12-05,0.064000
2010-01-29,0.036000
2013-03-28,0.033000
2024-03-28,0.026000
1988-03-03,0.065000
1985-07-01,0.070000
1990-10-03,0.058000
1994-02-28,0.052000
1997-05-30,0.050000
1999-06-30,0.047000
1985-01-02,0.072000
1994-10-31,0.052000
2006-07-31,0.040000
2007-11-30,0.053000
2014-05-30,0.031000
1992-07-31,0.058000
2001-04-30,0.047000
2021-01-29,0.023000
2001-02-28,0.047000
1987-11-02,0.064000
2011-07-29,0.034000
2015-01-30,0.029000
1986-07-01,0.067000
1988-10-05,0.065000
2024-05-31,0.025000
1993-11-30,0.053000
2008-01-31,0.039000
2020-02-28,0.026000
1997-06-30,0.050000
2019-02-28,0.027000
2021-11-30,0.018000
2002-06-28,0.047000
2002-09-30,0.047000
2007-05-31,0.039000
2022-05-31,0.021000
2024-09-30,0.026000
1988-07-06,0.065000
2004-11-30,0.042000
2015-10-30,0.030000
1989-01-05,0.064000
1992-11-30,0.056000
1999-04-30,0.047000
1999-08-31,0.048000
2012-04-30,0.033000
1990-03-05,0.060000
1992-03-31,0.058000
2004-08-31,0.042000
2008-07-31,0.036000
2008-09-30,0.036000
2024-11-29,0.026000
1991-12-31,0.059000
2016-04-29,0.029000
2023-07-31,0.025000
2001-06-29,0.047000
1987-04-01,0.063000
1988-06-03,0.065000
1993-07-30,0.052000
2025-06-30,0.026000
1987-01-02,0.067000
2008-02-29,0.039000
2008-08-29,0.036000
2009-10-30,0.035000
2007-09-28,0.039000
1995-03-31,0.051000
2000-01-31,0.048000
1986-04-01,0.067000
1992-02-28,0.058000
2003-11-28,0.042000
2023-12-29,0.026000
1986-08-01,0.070000