f/overrides/event-backup/mbdfx-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

406 lines
7.9 KiB
Plaintext

Date,Dividends
1994-03-31,0.038000
2012-12-31,0.020000
2022-10-27,0.020000
2025-03-27,0.027000
2007-05-25,0.043000
2007-12-26,0.091000
2012-10-31,0.023000
2013-09-30,0.014000
1994-11-30,0.052000
1999-04-30,0.048000
1999-08-31,0.051000
2000-07-31,0.049000
2015-02-24,0.005000
2016-06-27,0.017000
2017-04-25,0.017000
2022-08-29,0.018000
2014-08-26,0.009000
2017-06-27,0.018000
2019-03-27,0.022000
1994-09-30,0.044000
1995-11-30,0.054000
1998-06-30,0.051000
2005-12-27,0.037000
2014-02-28,0.017000
2021-11-26,0.012000
2022-11-28,0.020000
2023-07-27,0.022000
1995-03-31,0.060000
2001-11-30,0.039000
2003-04-30,0.031000
2007-07-26,0.040000
2009-11-24,0.024000
2009-12-28,0.207000
2015-01-27,0.005000
2016-05-25,0.017000
1994-07-29,0.049000
2000-03-31,0.056000
2008-06-25,0.036000
2008-07-28,0.041000
2021-06-28,0.013000
2006-12-26,0.039000
2011-07-29,0.023000
2020-10-28,0.016000
1993-11-30,0.045000
1994-05-31,0.045000
2001-06-29,0.045000
2001-08-31,0.041000
2019-02-26,0.020000
2023-06-28,0.022000
2004-10-29,0.023000
2006-07-26,0.041000
2010-08-31,0.024000
2016-08-26,0.017000
2010-05-28,0.021000
2014-03-31,0.014000
2002-04-30,0.036000
2006-09-26,0.039000
2008-08-26,0.034000
2010-02-26,0.019000
1999-09-30,0.047000
2022-04-27,0.014000
2024-09-26,0.026000
2025-12-16,0.030000
1995-08-31,0.048000
2004-08-31,0.019000
2009-01-27,0.035000
2022-12-15,0.023000
2025-11-25,0.027000
2002-03-28,0.039000
2005-02-28,0.020000
2008-01-28,0.045000
2016-10-26,0.018000
2016-03-28,0.017000
2016-04-26,0.017000
2018-09-26,0.019000
2024-02-27,0.024000
1997-06-30,0.050000
2003-09-30,0.055000
2011-08-31,0.023000
2012-11-30,0.020000
2012-12-26,0.228000
2015-12-28,0.254000
1999-05-28,0.051000
2000-05-31,0.050000
2001-01-31,0.047000
2003-07-31,0.024000
2004-11-30,0.022000
2008-05-27,0.039000
2008-12-26,0.720000
2017-08-28,0.018000
1999-03-31,0.049000
2007-04-25,0.040000
2010-10-29,0.025000
2018-06-27,0.018000
2003-03-31,0.027000
2007-01-26,0.045000
2010-06-30,0.022000
2014-05-30,0.008000
1995-04-28,0.051000
1995-06-30,0.053000
1999-02-26,0.047000
2000-02-29,0.052000
2020-09-28,0.016000
2022-09-28,0.018000
2018-07-27,0.019000
2007-02-23,0.038000
2008-02-26,0.039000
2009-03-26,0.038000
2012-02-29,0.023000
2016-12-27,0.017000
2017-11-27,0.018000
2018-10-29,0.019000
2020-03-27,0.019000
2020-05-27,0.018000
2005-07-29,0.033000
2007-08-28,0.044000
2009-10-27,0.031000
2019-08-28,0.021000
2018-11-28,0.021000
2019-09-26,0.020000
2020-08-27,0.016000
2024-07-29,0.026000
1994-12-30,0.059000
1998-11-30,0.051000
2011-09-30,0.026000
2013-02-28,0.017000
2025-09-26,0.027000
1994-01-31,0.043000
2014-01-31,0.018000
2020-06-26,0.017000
2021-05-26,0.011000
2018-05-29,0.019000
2018-12-27,0.022000
2019-06-26,0.021000
2021-03-29,0.014000
1999-07-30,0.053000
2004-04-30,0.025000
2010-12-31,0.081000
2016-11-25,0.017000
2021-10-27,0.011000
2024-08-28,0.027000
1998-07-31,0.055000
2001-07-31,0.042000
2013-08-30,0.016000
2022-07-27,0.017000
1993-10-29,0.046000
1994-02-28,0.040000
1995-02-28,0.055000
1996-01-31,0.053000
1996-06-28,0.052000
2005-10-26,0.035000
2021-12-15,0.269000
2025-02-26,0.026000
1998-03-31,0.048000
2000-10-31,0.054000
2002-07-31,0.029000
2009-05-26,0.033000
1997-11-28,0.050000
1998-05-29,0.052000
2013-01-31,0.021000
2017-07-26,0.018000
1997-07-31,0.054000
2000-12-29,0.054000
2005-06-27,0.035000
2009-04-27,0.044000
2007-06-26,0.039000
2007-09-25,0.039000
2012-06-29,0.021000
2016-02-24,0.015000
1997-10-31,0.072000
2000-10-25,0.085000
2004-02-27,0.016000
2006-03-28,0.041000
2020-11-25,0.015000
2022-03-29,0.013000
2025-04-28,0.028000
2025-01-29,0.028000
1994-06-30,0.043000
2004-09-30,0.017000
2005-01-14,0.008000
2010-09-30,0.023000
2019-10-29,0.021000
2026-02-25,0.027000
1998-01-30,0.051000
1999-12-31,0.054000
2006-11-27,0.043000
2008-10-28,0.043000
2006-01-26,0.039000
1996-12-31,0.074000
1997-02-28,0.052000
1997-12-15,0.016000
2004-01-30,0.018000
2022-01-27,0.006000
2004-12-31,0.028000
2013-04-30,0.019000
2014-06-25,0.009000
2018-02-26,0.018000
2010-01-29,0.023000
2012-07-31,0.022000
2013-03-28,0.017000
2014-10-28,0.010000
1993-06-30,0.049000
1994-10-31,0.048000
1999-06-30,0.050000
2005-09-27,0.034000
2021-09-28,0.012000
2023-02-24,0.020000
2016-07-26,0.018000
2005-03-28,0.022000
2006-05-25,0.039000
2009-06-25,0.034000
2010-11-30,0.025000
2011-04-29,0.025000
2017-01-26,0.016000
2023-08-29,0.023000
2026-07-29,0.030000
1993-05-28,0.043000
1998-12-31,0.067000
2001-09-28,0.031000
2002-02-28,0.032000
2017-02-23,0.018000
2000-06-30,0.054000
2004-07-30,0.024000
2007-11-27,0.041000
2011-05-31,0.023000
2019-11-26,0.022000
2019-12-16,0.024000
2023-04-26,0.021000
2025-05-28,0.028000
1994-08-31,0.044000
1995-09-29,0.056000
1996-04-30,0.057000
2012-08-31,0.024000
2011-02-28,0.024000
2011-12-30,0.101000
2018-08-29,0.020000
2019-05-29,0.022000
1997-04-30,0.054000
1998-09-30,0.049000
2000-01-31,0.047000
2010-12-28,0.490000
2024-10-29,0.027000
2024-11-26,0.027000
2002-12-31,0.033000
2005-01-31,0.019000
2013-06-28,0.015000
2019-04-26,0.020000
2021-02-24,0.015000
2021-04-28,0.010000
2022-02-24,0.012000
2022-05-26,0.016000
2003-08-29,0.028000
2014-09-25,0.010000
2014-11-24,0.013000
2016-01-26,0.015000
2026-05-27,0.030000
1995-01-31,0.055000
1998-08-31,0.048000
2003-10-31,0.028000
2015-01-28,0.005000
2013-10-31,0.014000
2024-06-26,0.025000
1996-02-29,0.052000
1997-05-30,0.055000
2011-01-31,0.025000
2011-03-31,0.027000
2001-05-31,0.044000
2003-06-30,0.024000
2005-05-25,0.028000
2006-02-23,0.035000
1993-12-31,0.049000
1995-05-31,0.051000
1996-10-31,0.059000
2001-03-30,0.050000
2024-01-29,0.024000
2024-12-16,0.027000
2006-10-26,0.042000
2017-03-28,0.019000
2018-03-27,0.018000
2020-02-26,0.020000
2002-09-30,0.027000
2018-04-26,0.017000
2020-07-29,0.016000
1993-07-30,0.047000
1995-07-31,0.048000
2000-11-30,0.055000
2002-08-30,0.029000
2006-08-28,0.045000
2015-03-26,0.018000
2021-08-27,0.012000
2022-06-28,0.016000
1995-12-29,0.095000
1996-07-31,0.057000
1997-12-31,0.051000
1998-02-27,0.047000
2023-11-28,0.024000
2012-03-30,0.023000
2013-05-31,0.016000
2013-07-31,0.015000
2026-03-27,0.031000
1998-04-30,0.050000
2003-11-28,0.027000
2005-04-26,0.024000
2009-02-24,0.033000
2001-04-30,0.044000
2004-03-31,0.024000
2012-09-28,0.023000
2015-04-27,0.016000
2015-05-26,0.014000
2017-05-25,0.017000
2023-01-27,0.019000
2024-03-26,0.026000
1994-04-29,0.046000
1996-05-31,0.059000
1997-03-31,0.049000
2002-05-31,0.035000
2005-11-25,0.038000
2013-11-29,0.014000
2021-07-28,0.012000
2025-07-29,0.028000
2003-02-28,0.024000
2005-08-26,0.037000
2009-09-25,0.032000
2011-10-31,0.026000
2026-06-26,0.029000
2000-08-31,0.055000
2001-12-31,0.114000
2004-05-28,0.019000
2017-12-27,0.021000
2026-01-28,0.028000
1993-08-31,0.045000
2006-06-27,0.043000
2007-10-29,0.046000
2020-01-29,0.018000
2023-09-27,0.022000
2025-06-26,0.027000
2025-10-29,0.030000
1997-09-30,0.049000
2003-01-31,0.031000
2010-03-31,0.022000
2020-04-28,0.018000
2023-03-29,0.022000
2023-05-26,0.021000
2024-04-26,0.026000
1999-11-30,0.050000
2012-04-30,0.023000
2014-07-28,0.009000
2018-01-29,0.017000
2024-05-29,0.027000
2001-02-28,0.045000
2002-01-31,0.032000
2015-06-25,0.014000
2017-09-26,0.018000
2015-10-27,0.018000
2019-07-29,0.021000
2023-12-14,0.026000
2006-04-25,0.037000
2008-03-26,0.037000
2011-11-30,0.025000
2014-04-30,0.010000
2003-05-30,0.031000
2003-12-31,0.020000
2004-06-30,0.019000
2014-12-26,0.550000
1993-09-30,0.045000
1996-03-29,0.056000
1998-10-30,0.141000
1999-10-29,0.038000
2015-08-26,0.015000
2015-09-25,0.018000
2000-09-29,0.056000
2008-09-25,0.035000
2009-07-28,0.038000
2015-07-28,0.015000
1995-10-31,0.054000
1996-08-30,0.059000
1996-09-30,0.052000
1996-11-29,0.059000
2025-08-27,0.028000
2026-04-28,0.030000
2011-06-30,0.024000
1999-01-29,0.045000
2002-10-31,0.033000
2002-11-29,0.035000
2008-11-24,0.034000
1997-01-31,0.056000
2010-07-30,0.025000
2016-09-27,0.017000
2013-12-31,0.016000
2019-01-29,0.020000
2020-12-16,0.015000
2023-10-27,0.024000
2001-10-31,0.033000
2002-06-28,0.027000
2009-08-26,0.034000
2012-01-31,0.027000
2007-03-27,0.040000
2012-05-31,0.021000
2015-11-24,0.019000
2021-01-27,0.016000
1997-08-29,0.054000
2000-04-28,0.042000
2008-04-25,0.042000
2017-10-26,0.018000