f/overrides/event-backup/abndx-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

479 lines
9.3 KiB
Plaintext

Date,Dividends
1990-08-24,0.105000
2009-05-22,0.053000
2012-12-31,0.024000
2007-09-25,0.056000
2021-09-30,0.015000
2026-04-30,0.039000
1987-05-22,0.120000
2001-07-26,0.078000
2024-01-31,0.039000
2014-10-31,0.022000
2015-11-30,0.022000
2026-05-29,0.039000
1999-05-25,0.078000
2001-08-24,0.078000
2007-01-25,0.033000
2000-05-25,0.078000
1999-12-23,0.078000
2022-01-31,0.017000
1995-03-24,0.088000
2011-10-31,0.033000
2023-04-28,0.033000
2018-04-30,0.023000
2019-11-29,0.022000
2024-08-30,0.041000
1988-12-23,0.110000
2000-02-28,0.078000
2013-08-30,0.024000
2007-06-25,0.053000
2017-12-29,0.021000
2020-11-30,0.016000
2020-12-31,0.452000
2021-11-30,0.014000
1987-11-25,0.105000
2006-09-25,0.053000
2006-12-22,0.098000
2024-09-30,0.040000
1991-11-26,0.098000
1997-05-23,0.083000
2016-03-31,0.018000
2023-06-30,0.035000
1994-09-23,0.088000
1998-09-25,0.078000
2011-02-28,0.031000
1997-11-28,0.083000
2014-09-30,0.020000
2016-10-31,0.016000
2017-02-28,0.017000
2022-04-29,0.027000
1993-06-25,0.093000
1993-11-24,0.090000
2014-12-31,0.023000
2005-12-23,0.047000
2023-05-31,0.035000
1987-04-24,0.120000
2008-04-25,0.056000
2015-07-31,0.021000
2012-06-29,0.027000
2020-05-29,0.022000
2021-03-31,0.013000
2024-11-29,0.038000
2024-12-31,0.040000
1987-01-23,0.120000
1996-05-24,0.083000
2004-09-24,0.053000
2002-09-25,0.070000
2002-11-25,0.070000
2016-09-30,0.013000
2004-02-25,0.053000
2007-03-23,0.053000
2017-07-31,0.020000
1988-03-25,0.105000
1992-03-25,0.093000
2002-06-25,0.070000
2018-10-31,0.029000
2020-01-31,0.023000
1989-01-25,0.105000
2011-04-29,0.035000
2011-12-30,0.024000
2026-02-27,0.036000
1999-03-26,0.078000
2002-04-25,0.070000
2022-03-31,0.023000
2011-08-31,0.033000
1987-03-25,0.120000
1999-06-25,0.078000
2006-03-24,0.053000
2011-11-30,0.033000
2014-02-28,0.025000
2025-08-29,0.040000
1988-02-25,0.105000
1999-08-26,0.078000
2001-09-25,0.078000
2018-05-31,0.022000
1992-02-25,0.098000
1999-09-27,0.078000
2014-05-30,0.023000
2024-02-29,0.037000
1986-04-28,0.120000
1992-06-25,0.093000
1992-12-23,0.133000
2018-01-31,0.021000
1986-01-27,0.120000
2002-08-23,0.070000
2003-07-25,0.053000
1996-11-25,0.083000
2000-09-25,0.074000
2004-12-23,0.063000
2011-03-31,0.035000
2011-12-23,0.025000
1987-02-25,0.120000
1987-08-25,0.105000
2010-01-29,0.041000
1986-05-27,0.120000
1997-10-24,0.083000
2010-07-30,0.040000
2012-05-31,0.029000
2017-09-29,0.018000
2019-12-31,0.201000
1995-11-24,0.083000
2002-03-25,0.070000
2006-08-25,0.053000
1996-02-23,0.083000
2024-06-28,0.040000
2016-07-29,0.020000
1995-10-25,0.083000
2005-07-25,0.053000
2014-07-31,0.022000
1994-01-26,0.088000
2013-06-28,0.024000
2014-01-31,0.026000
2016-05-31,0.014000
2019-06-28,0.027000
2025-07-31,0.040000
1994-02-25,0.088000
2000-12-22,0.105000
2014-11-28,0.021000
1989-05-25,0.105000
2019-09-30,0.025000
2013-02-28,0.022000
2023-02-28,0.024000
1995-07-25,0.088000
2005-01-25,0.043000
2010-09-30,0.039000
2010-10-29,0.038000
2011-06-30,0.035000
2012-11-30,0.027000
2000-06-26,0.078000
2007-08-24,0.056000
2008-06-25,0.056000
2020-06-30,0.019000
2025-06-30,0.039000
1992-08-25,0.093000
1993-05-25,0.093000
1997-01-24,0.060000
1986-07-25,0.120000
1996-08-23,0.083000
2006-05-25,0.053000
2022-06-30,0.039000
1998-03-25,0.153000
1998-04-24,0.083000
1994-04-25,0.088000
2024-03-28,0.039000
2004-11-24,0.053000
2021-07-30,0.020000
2023-08-31,0.037000
2011-07-29,0.035000
2026-03-31,0.039000
1990-03-23,0.105000
1998-01-23,0.073000
2008-03-25,0.056000
2025-03-31,0.040000
2004-08-25,0.053000
2013-03-28,0.023000
2016-02-29,0.016000
1990-09-25,0.105000
1991-07-25,0.098000
2006-02-24,0.053000
1991-06-25,0.098000
2009-10-23,0.039000
2014-04-30,0.022000
2017-05-31,0.019000
2018-03-29,0.025000
2019-05-31,0.028000
1989-04-25,0.105000
1990-04-25,0.105000
2006-11-24,0.053000
1997-02-25,0.083000
2004-01-23,0.038000
2010-06-30,0.039000
1989-12-22,0.145000
2012-07-31,0.027000
2015-03-31,0.019000
2000-11-28,0.078000
2003-09-25,0.053000
2006-07-25,0.053000
2014-03-31,0.026000
2023-01-31,0.027000
1994-07-25,0.088000
1994-11-25,0.088000
1997-06-25,0.083000
1988-09-23,0.105000
2009-02-25,0.056000
1993-03-25,0.093000
2019-03-29,0.027000
1997-12-24,0.093000
2021-01-29,0.015000
1986-06-25,0.120000
1986-11-25,0.120000
1986-12-24,0.120000
2001-05-29,0.078000
2020-07-31,0.022000
1989-09-25,0.105000
2009-11-25,0.039000
2014-08-29,0.020000
2015-12-31,0.029000
1986-02-26,0.120000
1992-05-22,0.093000
2010-08-31,0.037000
2008-11-25,0.056000
1990-05-25,0.105000
1996-07-25,0.083000
2008-05-23,0.056000
1988-08-25,0.105000
1992-04-24,0.093000
2016-01-29,0.023000
1994-12-23,0.088000
2020-09-30,0.018000
2020-10-30,0.018000
1989-11-24,0.105000
2001-03-23,0.078000
2013-01-31,0.023000
2011-09-30,0.033000
1989-03-23,0.105000
1998-05-22,0.083000
1998-08-25,0.078000
1991-03-25,0.098000
2000-04-25,0.078000
2010-05-28,0.037000
2000-01-26,0.078000
2015-05-29,0.024000
2020-04-30,0.035000
1995-05-25,0.088000
1996-03-25,0.083000
1998-07-24,0.078000
2005-06-24,0.053000
1993-07-23,0.093000
1994-03-25,0.088000
1995-08-25,0.083000
2005-08-25,0.053000
1987-09-25,0.105000
1998-06-25,0.083000
1999-07-26,0.078000
1997-04-28,0.083000
2015-01-30,0.018000
2010-11-30,0.041000
2022-10-31,0.020000
1989-06-23,0.105000
2020-08-31,0.019000
2021-08-31,0.019000
1987-07-24,0.105000
2019-08-30,0.025000
1987-06-25,0.105000
1990-11-23,0.105000
1996-04-25,0.083000
2012-08-31,0.028000
2018-08-31,0.025000
1998-11-25,0.078000
2008-02-25,0.056000
2010-03-31,0.041000
2009-08-25,0.039000
2019-02-28,0.023000
1998-12-24,0.149000
2013-04-30,0.023000
2007-04-25,0.053000
2017-04-28,0.020000
2025-04-30,0.039000
1988-10-25,0.105000
1989-07-25,0.105000
2000-10-25,0.078000
2019-04-30,0.028000
1986-08-25,0.120000
2001-04-27,0.078000
2010-02-26,0.036000
2020-02-28,0.020000
1994-10-25,0.088000
2016-12-30,0.027000
2019-10-31,0.026000
2011-05-31,0.035000
2025-11-28,0.038000
1996-10-25,0.083000
2002-12-24,0.063000
2008-09-25,0.056000
1991-04-25,0.098000
2008-12-24,0.152000
2013-12-31,0.029000
2020-03-31,0.031000
2021-02-26,0.013000
1995-04-25,0.088000
2001-01-25,0.050000
2003-10-24,0.053000
2005-11-25,0.053000
2007-10-25,0.056000
2009-04-24,0.053000
2026-06-30,0.039000
1993-08-25,0.090000
1999-11-26,0.078000
2004-10-25,0.053000
2010-12-31,0.034000
2025-10-31,0.040000
1986-09-25,0.120000
1990-12-24,0.105000
1993-02-25,0.093000
1994-05-25,0.088000
1995-06-23,0.088000
2024-07-31,0.042000
2002-05-24,0.070000
2011-01-31,0.034000
2012-10-31,0.025000
2016-08-31,0.018000
1988-11-25,0.105000
1995-12-22,0.103000
2000-08-25,0.078000
2015-08-31,0.020000
2018-07-31,0.025000
2022-05-31,0.035000
2024-05-31,0.040000
1990-06-25,0.105000
2004-03-25,0.053000
2005-05-25,0.053000
2005-04-25,0.053000
2022-07-29,0.034000
2007-12-24,0.126000
2012-09-28,0.026000
2021-04-30,0.016000
2024-10-31,0.041000
2001-11-23,0.078000
2002-07-25,0.070000
2005-09-23,0.053000
1998-02-25,0.083000
2015-10-30,0.021000
1997-09-25,0.083000
2012-02-29,0.030000
2013-11-29,0.029000
2003-12-24,0.068000
2009-07-24,0.039000
2023-03-31,0.036000
1988-04-29,0.105000
1992-09-25,0.093000
2003-11-25,0.053000
2004-07-23,0.057000
2016-06-30,0.019000
2023-12-29,0.038000
1991-05-24,0.098000
1992-01-24,0.098000
1994-06-24,0.088000
2009-12-24,0.042000
2017-01-31,0.018000
2025-12-31,0.039000
2004-04-23,0.053000
2008-07-25,0.056000
2023-11-30,0.037000
2022-12-30,0.030000
1997-03-25,0.083000
1999-04-26,0.078000
2012-04-30,0.029000
1999-01-29,0.078000
2000-03-24,0.074000
2005-03-24,0.053000
2017-08-31,0.019000
2018-09-28,0.024000
2023-09-29,0.036000
1989-08-25,0.105000
1995-01-25,0.088000
1999-02-25,0.078000
2022-11-30,0.026000
1992-10-23,0.093000
2006-10-25,0.053000
2018-06-29,0.023000
1994-08-25,0.088000
2001-10-26,0.078000
2015-06-30,0.018000
1986-10-24,0.120000
1988-06-24,0.105000
1990-01-25,0.085000
2023-07-31,0.035000
1993-10-25,0.090000
1997-08-25,0.083000
2008-01-25,0.036000
2007-05-25,0.053000
2023-10-31,0.038000
2025-02-28,0.037000
1987-10-23,0.105000
1991-08-23,0.098000
1993-12-23,0.090000
2017-03-31,0.023000
2019-07-31,0.024000
2021-10-29,0.014000
2025-05-30,0.040000
1989-02-24,0.105000
2001-12-24,0.070000
2006-06-23,0.053000
1991-12-24,0.098000
2008-10-24,0.056000
1991-01-25,0.105000
2025-09-30,0.039000
2013-05-31,0.023000
2022-09-30,0.019000
1996-01-25,0.063000
2002-01-25,0.070000
2007-02-23,0.053000
2001-02-23,0.078000
2018-11-30,0.031000
1986-03-26,0.120000
1990-02-23,0.105000
1990-10-25,0.105000
1987-12-24,0.105000
2013-09-30,0.024000
2021-05-28,0.016000
2019-01-31,0.025000
1993-04-23,0.093000
2002-02-25,0.070000
2007-11-23,0.056000
2013-07-31,0.024000
2018-12-31,0.033000
2000-07-25,0.078000
2005-10-25,0.053000
2006-04-25,0.053000
1988-07-25,0.105000
2006-01-25,0.033000
2026-01-30,0.037000
2003-08-25,0.053000
2022-02-28,0.015000
2025-01-31,0.039000
2017-11-30,0.023000
2026-07-31,0.039000
1995-09-25,0.083000
2012-03-30,0.029000
2017-10-31,0.020000
2009-06-25,0.043000
2015-02-27,0.018000
1988-05-25,0.105000
1993-01-25,0.073000
2009-01-23,0.028000
1993-09-27,0.090000
1998-10-23,0.078000
2013-10-31,0.027000
2014-06-30,0.023000
1989-10-25,0.105000
1991-09-25,0.098000
1992-11-25,0.093000
2017-06-30,0.019000
1990-07-25,0.105000
1991-02-25,0.098000
1995-02-24,0.088000
2012-01-31,0.032000
2016-04-29,0.014000
2018-02-28,0.019000
2021-06-30,0.041000
1991-10-25,0.098000
2001-06-25,0.078000
2009-03-25,0.056000
1999-10-26,0.078000
2009-09-25,0.039000
2021-12-31,0.074000
2024-04-30,0.041000
1988-01-25,0.105000
1996-12-24,0.128000
1997-07-25,0.083000
1992-07-24,0.093000
2015-04-30,0.022000
2015-09-30,0.021000
2008-08-25,0.056000
2016-11-30,0.019000
2022-08-31,0.038000
1996-06-25,0.083000
1996-09-25,0.083000
2007-07-25,0.056000