f/overrides/event-backup/amaax-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

474 lines
9.2 KiB
Plaintext

Date,Dividends
2000-09-29,0.016000
2012-06-29,0.033000
2001-05-31,0.017000
2010-11-30,0.033000
2009-07-20,0.035000
2000-03-31,0.017000
2024-04-30,0.025000
1999-07-20,0.031000
2000-04-28,0.016000
2014-07-31,0.033000
2002-01-18,0.031000
2018-04-30,0.026000
2001-03-20,0.031000
2002-01-31,0.017000
2012-12-31,0.032000
2013-03-28,0.033000
2022-05-31,0.022000
2011-06-30,0.035000
2018-10-31,0.027000
1998-09-30,0.016000
1998-12-31,0.017000
1999-01-20,0.031000
2004-02-20,0.044000
2004-12-31,0.014000
2000-12-29,0.017000
2007-04-20,0.041000
2012-05-31,0.034000
2024-02-29,0.025000
2026-05-29,0.030000
1994-09-30,0.051000
2000-10-31,0.017000
2006-11-20,0.035000
2007-02-20,0.037000
2026-06-30,0.028000
2001-07-20,0.031000
2006-12-20,0.036000
2006-12-29,0.013000
2021-12-31,0.019000
1996-04-19,0.051000
2003-12-31,0.015000
2008-01-18,0.027000
2008-12-19,0.035000
2008-09-19,0.039000
2009-05-20,0.038000
2014-12-31,0.031000
2018-12-31,0.026000
2026-04-30,0.028000
1997-02-28,0.015000
2014-10-31,0.033000
2023-12-29,0.027000
2003-09-19,0.044000
2005-05-20,0.042000
2005-07-20,0.039000
2015-04-30,0.031000
2019-01-31,0.028000
2017-02-28,0.027000
2018-08-31,0.030000
1997-12-31,0.018000
1999-05-20,0.031000
2003-05-20,0.044000
2006-02-21,0.037000
2010-05-28,0.036000
2024-11-29,0.026000
1998-01-20,0.033000
2000-07-20,0.032000
2002-11-29,0.015000
2016-01-29,0.030000
2016-12-30,0.029000
1998-04-20,0.033000
1999-04-20,0.031000
2009-10-20,0.034000
2015-12-31,0.031000
2019-07-31,0.028000
1995-12-20,0.051000
2007-09-20,0.037000
2009-08-20,0.036000
2022-07-29,0.022000
1995-12-29,0.018000
1996-08-20,0.051000
2005-03-18,0.037000
2024-08-30,0.028000
1996-09-20,0.051000
2008-12-31,0.012000
2017-01-31,0.029000
2018-02-28,0.024000
2020-10-30,0.025000
1997-06-20,0.033000
2001-06-29,0.016000
2020-06-30,0.024000
2020-09-30,0.023000
2004-03-19,0.044000
2017-04-28,0.027000
1994-04-29,0.053000
1996-01-19,0.033000
1999-12-20,0.031000
2022-12-30,0.025000
1995-03-31,0.051000
2001-11-20,0.031000
2004-10-20,0.041000
2015-07-31,0.033000
2021-10-29,0.019000
2002-06-20,0.032000
2015-06-30,0.031000
1995-05-31,0.051000
2010-01-29,0.034000
2022-06-30,0.022000
2021-09-30,0.019000
2023-03-31,0.027000
2023-10-31,0.025000
2000-11-30,0.016000
2002-08-30,0.017000
2013-11-29,0.032000
1994-11-30,0.051000
2001-04-30,0.016000
2002-06-28,0.016000
2020-02-28,0.024000
1997-05-20,0.034000
2012-03-30,0.034000
2025-01-31,0.029000
1994-12-30,0.051000
2003-06-20,0.044000
2003-12-19,0.044000
2012-01-31,0.035000
2015-01-30,0.032000
1994-06-30,0.047000
1999-11-19,0.030000
2005-02-18,0.042000
2011-11-30,0.034000
2012-08-31,0.033000
1997-01-20,0.033000
1999-08-20,0.030000
2008-04-18,0.032000
2000-02-18,0.030000
2001-11-30,0.017000
2011-10-31,0.035000
2015-10-30,0.031000
2022-02-28,0.018000
1995-09-20,0.051000
2000-06-30,0.016000
2024-12-31,0.026000
2006-06-20,0.037000
2007-10-19,0.037000
2019-06-28,0.026000
2026-03-31,0.028000
2002-09-30,0.016000
2003-01-21,0.028000
2003-07-18,0.044000
2007-12-31,0.014000
2011-07-29,0.036000
2020-11-30,0.021000
1996-07-19,0.051000
1998-07-31,0.017000
2000-05-19,0.032000
2004-11-19,0.041000
2006-05-19,0.039000
2017-12-29,0.028000
2021-06-30,0.021000
2022-04-29,0.022000
2024-01-31,0.027000
2025-10-31,0.031000
1997-07-31,0.018000
1998-11-20,0.031000
2009-02-20,0.041000
2011-08-31,0.035000
2022-11-30,0.024000
2020-12-31,0.024000
1997-12-09,0.190000
2002-05-20,0.031000
2002-12-31,0.016000
2005-09-20,0.038000
2007-12-20,0.038000
1998-11-24,0.030000
2002-11-20,0.029000
2005-04-20,0.041000
2021-02-26,0.022000
1998-12-18,0.032000
2013-07-31,0.034000
2002-07-22,0.031000
2004-12-20,0.039000
2007-03-20,0.034000
2012-09-28,0.033000
2021-03-31,0.023000
2017-08-31,0.029000
2023-02-28,0.023000
1998-02-20,0.033000
1998-08-20,0.031000
2002-12-20,0.028000
2004-09-20,0.041000
2016-05-31,0.029000
1997-08-20,0.033000
1999-05-28,0.016000
2018-05-31,0.027000
1997-04-30,0.017000
1999-10-20,0.031000
2001-08-20,0.031000
1997-12-19,0.034000
2002-09-20,0.032000
2013-09-30,0.033000
2017-11-30,0.028000
1995-10-20,0.051000
2005-01-20,0.026000
2007-05-18,0.034000
2017-07-31,0.027000
2014-06-30,0.032000
2015-08-31,0.029000
2021-08-31,0.019000
1997-09-30,0.017000
1998-05-29,0.017000
2000-01-20,0.030000
2000-11-20,0.031000
2001-04-20,0.032000
2002-02-20,0.031000
2016-06-30,0.029000
2002-03-20,0.034000
2010-06-30,0.035000
2019-12-31,0.026000
2022-03-31,0.021000
1995-01-31,0.051000
1997-03-20,0.036000
2001-03-30,0.017000
2023-07-31,0.023000
2023-09-29,0.025000
2005-06-20,0.036000
2009-09-18,0.036000
2020-03-31,0.026000
1996-06-20,0.051000
2008-06-20,0.036000
2010-09-30,0.032000
2011-01-31,0.033000
2013-02-28,0.029000
2014-09-30,0.030000
1996-05-20,0.051000
1998-01-30,0.018000
2001-01-31,0.016000
2001-09-28,0.017000
2011-02-28,0.031000
1998-08-31,0.017000
2001-06-20,0.032000
2005-08-19,0.041000
2005-12-30,0.014000
2018-09-28,0.024000
2024-09-30,0.023000
2001-02-20,0.031000
2006-09-20,0.037000
2007-06-20,0.038000
2012-12-07,0.045000
2017-09-29,0.029000
2010-12-31,0.034000
2024-03-28,0.025000
2024-10-31,0.026000
1998-10-30,0.017000
1999-01-29,0.017000
2000-03-20,0.032000
2004-04-20,0.044000
2019-09-30,0.024000
2019-04-30,0.028000
2025-11-28,0.026000
1998-03-20,0.036000
2002-10-31,0.014000
2009-12-18,0.031000
1995-08-18,0.051000
2000-04-20,0.031000
2008-08-20,0.037000
2008-11-20,0.036000
2026-02-27,0.026000
2002-02-28,0.014000
2014-01-31,0.034000
1996-11-20,0.051000
2016-03-31,0.031000
2002-03-28,0.017000
2016-08-31,0.030000
2009-11-20,0.037000
2024-05-31,0.027000
2024-07-31,0.026000
2003-10-20,0.044000
2011-12-30,0.036000
2012-10-31,0.034000
2019-10-31,0.027000
2020-07-31,0.026000
2017-10-31,0.028000
1996-10-18,0.051000
2001-12-31,0.017000
2003-04-17,0.044000
2010-08-31,0.032000
2013-12-31,0.034000
1994-10-31,0.051000
2001-10-31,0.016000
2011-04-29,0.033000
2014-02-28,0.031000
2000-10-20,0.031000
2009-06-19,0.039000
2009-12-31,0.012000
2010-02-26,0.032000
2023-04-28,0.024000
2025-06-30,0.027000
1998-06-19,0.031000
2000-06-20,0.031000
2003-11-20,0.044000
2016-09-30,0.030000
2018-11-30,0.029000
2018-06-29,0.028000
1998-05-20,0.032000
2001-01-19,0.031000
2005-12-20,0.038000
2011-03-31,0.033000
2015-03-31,0.031000
2003-03-20,0.044000
2016-10-31,0.028000
2003-08-20,0.088000
2004-08-20,0.041000
2025-03-31,0.026000
1995-07-20,0.033000
2000-09-20,0.032000
2024-06-28,0.023000
2025-09-30,0.027000
1997-10-31,0.018000
2004-05-20,0.044000
2006-03-20,0.036000
2007-01-19,0.026000
2008-07-18,0.032000
2001-07-31,0.017000
1994-07-29,0.047000
2021-11-30,0.018000
2023-06-30,0.025000
2019-05-31,0.030000
2021-01-29,0.024000
2021-04-30,0.024000
2025-08-29,0.031000
2002-10-21,0.025000
2010-03-31,0.036000
2015-05-29,0.032000
2023-08-31,0.024000
2026-01-30,0.030000
1997-07-18,0.034000
1999-06-18,0.030000
2013-05-31,0.033000
2015-09-30,0.030000
1996-02-20,0.051000
2006-10-20,0.038000
2017-12-06,0.012000
2017-03-31,0.031000
1997-02-20,0.033000
1999-03-31,0.017000
1999-11-30,0.015000
2000-08-31,0.017000
2017-06-30,0.030000
2022-10-31,0.023000
1996-12-20,0.051000
1998-03-31,0.018000
1998-10-20,0.032000
2006-01-20,0.028000
2016-04-29,0.031000
2003-02-20,0.031000
2004-01-20,0.029000
2009-03-20,0.036000
2015-02-27,0.029000
1997-11-20,0.033000
1998-04-30,0.016000
2025-07-31,0.030000
2014-04-30,0.033000
2020-08-31,0.023000
2022-01-31,0.019000
1999-07-30,0.016000
2001-05-21,0.031000
2008-02-20,0.038000
2011-05-31,0.034000
2012-04-30,0.034000
2023-11-30,0.026000
2025-02-28,0.025000
2025-12-31,0.029000
2004-07-20,0.041000
2014-03-31,0.033000
2021-05-28,0.021000
2016-07-29,0.030000
2019-08-30,0.029000
1999-04-30,0.015000
1999-06-30,0.015000
1999-08-31,0.016000
2002-04-19,0.031000
2013-10-31,0.033000
1996-12-31,0.018000
1998-06-30,0.016000
2008-10-20,0.033000
2017-05-31,0.030000
1996-03-20,0.051000
1999-09-30,0.015000
2001-08-31,0.017000
2007-11-20,0.036000
2014-11-28,0.029000
1997-08-29,0.018000
2005-10-20,0.038000
2005-11-18,0.039000
2014-08-29,0.031000
1994-08-31,0.051000
1997-03-31,0.018000
2003-02-28,0.013000
2008-03-20,0.039000
1997-11-28,0.017000
2012-02-29,0.033000
2021-07-30,0.021000
2000-02-29,0.014000
2012-07-31,0.034000
2013-04-30,0.032000
2014-05-30,0.033000
1998-09-21,0.031000
2007-07-20,0.039000
2015-11-30,0.029000
2022-09-30,0.024000
1995-06-30,0.051000
2006-08-18,0.037000
2013-01-31,0.032000
1998-11-30,0.016000
1999-10-29,0.016000
2002-08-20,0.031000
2018-07-31,0.027000
2000-08-21,0.031000
2008-05-20,0.033000
2016-02-29,0.029000
2020-05-29,0.026000
1997-06-30,0.017000
1997-10-20,0.034000
2013-08-30,0.034000
2007-08-20,0.035000
2016-11-30,0.028000
2023-01-31,0.026000
1997-05-30,0.018000
1999-02-19,0.031000
2002-07-31,0.017000
2003-01-31,0.016000
1997-09-19,0.033000
2006-07-20,0.036000
1995-04-28,0.051000
1995-11-20,0.051000
2001-02-28,0.016000
2025-05-30,0.030000
2000-05-31,0.017000
2013-06-28,0.032000
2018-03-29,0.028000
1999-12-31,0.016000
2000-12-20,0.032000
2009-01-20,0.024000
2010-10-29,0.033000
1999-09-20,0.030000
2010-07-30,0.035000
2020-01-31,0.029000
2025-04-30,0.027000
1994-05-31,0.047000
2001-09-20,0.031000
2002-05-31,0.017000
2006-04-20,0.039000
1995-02-28,0.051000
2001-12-20,0.032000
2011-09-30,0.034000
2012-11-30,0.032000
2018-01-31,0.028000
2020-04-30,0.025000
1998-02-27,0.015000
2019-03-29,0.028000
2023-05-31,0.026000
2019-02-28,0.025000
2001-10-19,0.032000
2002-04-30,0.016000
2009-04-20,0.038000
2022-08-31,0.023000
1997-04-18,0.033000
1998-07-20,0.032000
2000-01-31,0.016000
2019-11-29,0.027000
1999-03-19,0.035000
2000-07-31,0.017000
2004-06-18,0.041000
1999-02-26,0.014000