f/overrides/event-backup/mmu-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

408 lines
7.9 KiB
Plaintext

Date,Dividends
1994-05-17,0.061000
1997-10-24,0.056000
1999-11-18,0.050000
2003-05-22,0.058000
2004-06-18,0.058000
2015-08-19,0.065000
2019-10-17,0.051000
2023-10-23,0.037000
2024-09-23,0.055000
2025-03-24,0.055000
2026-06-23,0.055000
1993-03-18,0.061000
1994-04-18,0.091000
2001-12-20,0.050000
2005-12-22,0.046000
2021-09-22,0.041000
1994-09-19,0.182000
1999-09-17,0.050000
2000-05-19,0.050000
2013-08-21,0.065000
2016-04-20,0.065000
2017-12-21,0.063000
1993-04-19,0.061000
1996-08-23,0.060000
2014-09-17,0.065000
2019-01-17,0.058000
2021-04-22,0.043000
1996-03-22,0.060000
1999-07-23,0.050000
2004-12-23,0.052000
2019-04-17,0.058000
2020-12-22,0.045000
2024-06-21,0.055000
2025-01-24,0.055000
1993-05-17,0.061000
2004-04-23,0.058000
2006-08-16,0.046000
2008-01-16,0.045000
2016-11-16,0.065000
2023-06-22,0.037000
2003-12-18,0.058000
2013-04-17,0.065000
2020-03-23,0.045000
2021-10-21,0.041000
1995-04-17,0.182000
1996-09-20,0.060000
2006-07-19,0.046000
2012-09-19,0.065000
2022-07-21,0.039000
1996-11-21,0.060000
1998-10-23,0.049000
1999-01-22,0.048000
1999-08-20,0.050000
2007-02-14,0.045000
2011-11-16,0.065000
2014-11-19,0.065000
1994-11-16,0.061000
1999-12-22,0.050000
2002-12-19,0.056000
2004-10-22,0.055000
2011-05-18,0.065000
2020-05-20,0.045000
2020-09-22,0.045000
2021-01-21,0.045000
2021-07-22,0.043000
2021-08-23,0.043000
2023-04-20,0.037000
2026-07-24,0.055000
1997-12-18,0.294000
2016-01-20,0.065000
2018-10-18,0.058000
2019-05-23,0.058000
1998-02-20,0.056000
2003-01-24,0.056000
2003-03-21,0.058000
2017-01-18,0.063000
1993-06-17,0.960000
2009-09-16,0.060000
2013-09-18,0.065000
2025-06-23,0.055000
1997-04-18,0.060000
2005-11-17,0.046000
2009-10-21,0.060000
2017-05-17,0.063000
1992-10-19,0.182000
1995-11-16,0.064000
2002-07-19,0.050000
2002-08-23,0.050000
2011-01-19,0.065000
2015-09-16,0.065000
1995-05-17,0.182000
2007-08-22,0.045000
2017-02-15,0.063000
1992-12-17,0.089000
2004-05-21,0.058000
2010-01-20,0.060000
2015-05-20,0.065000
2017-04-19,0.063000
2022-01-21,0.041000
2022-05-20,0.039000
2010-07-21,0.065000
2011-06-15,0.065000
2011-07-20,0.065000
2012-12-12,0.065000
2014-08-20,0.065000
2017-08-23,0.063000
2022-11-21,0.039000
1997-02-21,0.060000
1997-03-20,0.060000
2001-01-19,0.050000
2005-05-20,0.052000
2006-06-23,0.046000
2020-11-19,0.045000
2021-05-20,0.043000
2003-10-24,0.058000
2012-06-20,0.065000
2023-01-23,0.037000
1995-07-24,0.064000
1997-11-20,0.056000
2003-02-21,0.056000
2013-03-13,0.065000
2015-06-17,0.065000
2019-09-19,0.051000
2024-02-21,0.042000
2001-02-15,0.050000
2004-02-20,0.058000
2007-11-20,0.045000
2008-09-17,0.045000
2020-06-22,0.045000
2022-10-21,0.039000
2025-04-23,0.055000
2010-04-21,0.065000
2018-09-20,0.058000
2018-11-21,0.058000
2022-02-17,0.041000
2025-10-24,0.055000
2026-02-20,0.055000
1998-03-20,0.050000
2009-01-21,0.045000
2011-02-16,0.065000
2012-01-18,0.065000
2013-12-18,0.065000
1995-06-21,0.093000
1995-10-20,0.064000
2000-11-16,0.050000
2001-07-20,0.050000
2001-11-23,0.050000
2004-01-23,0.058000
2004-11-18,0.055000
2012-10-17,0.065000
1994-06-17,0.061000
1995-08-18,0.064000
1998-04-17,0.050000
1998-05-21,0.050000
2012-08-22,0.065000
2015-04-15,0.065000
2018-07-19,0.058000
1993-12-17,0.182000
2008-06-18,0.045000
2011-12-14,0.065000
2026-03-24,0.055000
1993-11-16,0.096000
2000-09-22,0.050000
2016-12-21,0.063000
2020-07-23,0.045000
2024-05-22,0.055000
2024-11-21,0.055000
2024-12-23,0.055000
1993-07-19,0.182000
2000-08-18,0.050000
2008-02-20,0.045000
2018-01-18,0.063000
2019-06-20,0.058000
2007-10-17,0.045000
2015-10-21,0.065000
2016-02-17,0.065000
2018-02-15,0.063000
2018-12-20,0.058000
2022-09-22,0.039000
1994-12-16,0.182000
2002-04-19,0.050000
2005-04-22,0.052000
2006-05-19,0.046000
2009-04-15,0.050000
2015-12-16,0.065000
2023-12-20,0.042000
2001-05-18,0.050000
2006-10-18,0.046000
2009-03-18,0.050000
2012-03-21,0.065000
2014-07-16,0.065000
2015-02-18,0.065000
2018-08-23,0.058000
1996-12-19,0.060000
2001-06-22,0.050000
2004-07-23,0.058000
2008-05-21,0.045000
2013-02-13,0.065000
2013-05-22,0.065000
2018-05-24,0.063000
2019-03-21,0.058000
2021-12-22,0.041000
2022-12-21,0.037000
1992-11-17,0.061000
1994-01-18,0.182000
1995-09-22,0.064000
2014-02-19,0.065000
2018-06-21,0.058000
2023-09-21,0.037000
2025-05-22,0.055000
1996-05-23,0.060000
1997-07-18,0.060000
2019-08-22,0.058000
1997-05-22,0.060000
2001-10-19,0.050000
2007-04-18,0.045000
2019-11-21,0.051000
2025-11-20,0.055000
1996-04-19,0.060000
2003-07-18,0.058000
2005-06-17,0.046000
2006-09-20,0.046000
2008-07-16,0.045000
2023-07-21,0.037000
1994-07-18,0.061000
2002-11-21,0.056000
2004-09-17,0.055000
2009-02-18,0.045000
2012-02-15,0.065000
1996-07-19,0.060000
1996-10-18,0.060000
1998-06-19,0.050000
1998-09-18,0.049000
2000-10-20,0.050000
2003-04-17,0.058000
2008-04-16,0.045000
2019-07-18,0.058000
2007-07-18,0.045000
2020-01-23,0.045000
2021-02-18,0.045000
2025-08-22,0.055000
2026-08-24,0.055000
1994-08-18,0.093000
1997-08-22,0.056000
1999-03-19,0.049000
2002-05-23,0.050000
2011-08-17,0.065000
2012-04-18,0.065000
2016-10-19,0.065000
2019-02-14,0.058000
2021-11-19,0.041000
2022-06-22,0.039000
2003-11-20,0.058000
2005-01-21,0.052000
2007-12-19,0.045000
2025-07-24,0.055000
1995-03-20,0.061000
1999-02-19,0.049000
2001-04-20,0.050000
2006-04-21,0.046000
2006-12-20,0.045000
2009-07-22,0.055000
2010-11-17,0.065000
2011-09-21,0.065000
2012-05-16,0.065000
2012-11-20,0.065000
2013-01-16,0.065000
2015-01-21,0.065000
2016-06-15,0.065000
2021-06-22,0.043000
2026-05-21,0.055000
1996-02-15,0.064000
1999-05-21,0.049000
2002-02-14,0.050000
2007-03-21,0.045000
2010-02-17,0.060000
2011-04-19,0.065000
1993-02-12,0.182000
1997-01-24,0.060000
1998-11-19,0.049000
2000-01-24,0.050000
2020-04-22,0.045000
2026-04-23,0.055000
1997-06-20,0.060000
2002-01-17,0.050000
2002-03-21,0.050000
2002-10-18,0.055000
2005-08-19,0.046000
2006-02-16,0.046000
2009-08-19,0.055000
2010-06-16,0.065000
2013-10-16,0.065000
2000-03-24,0.050000
2009-06-17,0.055000
2024-01-23,0.042000
2024-08-23,0.055000
2025-02-21,0.055000
1993-08-18,0.061000
1998-07-24,0.048000
1998-08-21,0.048000
2003-08-22,0.058000
2007-06-20,0.045000
2011-10-19,0.065000
2020-02-20,0.045000
2022-08-23,0.039000
2024-04-22,0.055000
1998-12-17,0.118000
2010-10-20,0.065000
2014-10-22,0.065000
2022-03-23,0.039000
2024-10-24,0.055000
1995-01-18,0.093000
2009-11-18,0.060000
2015-03-18,0.065000
2015-07-22,0.065000
1996-06-21,0.060000
1999-04-23,0.049000
2017-10-19,0.063000
2025-12-23,0.055000
2000-12-21,0.050000
2006-01-20,0.046000
2008-03-18,0.045000
2012-07-18,0.065000
2017-06-21,0.063000
1996-01-19,0.064000
1997-09-19,0.056000
2006-03-24,0.046000
2007-05-16,0.045000
2008-10-22,0.045000
2014-06-18,0.065000
2020-08-21,0.045000
2003-09-19,0.058000
2008-08-20,0.045000
2009-12-16,0.060000
2015-11-18,0.065000
2016-09-21,0.065000
2019-12-19,0.045000
1995-12-21,0.064000
2000-04-20,0.050000
2001-09-21,0.050000
2007-01-17,0.045000
2013-06-19,0.065000
2018-03-22,0.063000
2023-03-23,0.037000
1994-02-14,0.061000
1999-06-18,0.051000
2003-06-20,0.058000
2010-12-21,0.068000
2016-08-17,0.065000
2023-02-17,0.037000
2025-09-23,0.055000
1993-09-17,0.061000
1998-01-23,0.056000
2002-09-20,0.055000
2008-11-19,0.045000
2010-03-17,0.065000
2010-05-19,0.065000
2014-01-22,0.065000
2017-03-22,0.063000
1993-01-15,0.061000
2000-02-17,0.050000
2010-08-18,0.065000
2014-12-17,0.065000
2016-07-20,0.065000
2022-04-21,0.039000
2024-07-24,0.055000
1993-10-18,0.061000
2002-06-21,0.050000
2004-08-20,0.058000
2006-11-15,0.046000
2016-03-16,0.065000
1994-03-18,0.182000
1995-02-14,0.182000
2004-03-19,0.058000
2005-02-17,0.052000
2008-12-17,0.045000
2018-04-19,0.063000
2020-10-22,0.045000
2023-05-22,0.037000
2024-03-20,0.055000
2026-01-23,0.055000
1999-10-22,0.050000
2017-07-19,0.063000
2017-11-22,0.063000
2000-07-21,0.050000
2009-05-20,0.050000
2013-07-17,0.065000
2013-11-20,0.065000
2017-09-21,0.063000
2021-03-23,0.043000
1994-10-18,0.182000
2000-06-23,0.050000
2001-08-24,0.050000
2010-09-15,0.065000
2011-03-16,0.065000
2014-03-19,0.065000
2014-05-21,0.065000
2023-08-23,0.037000
1992-09-17,0.061000
2001-03-23,0.050000
2005-03-17,0.052000
2005-10-21,0.046000
2007-09-19,0.045000
2014-04-15,0.065000
2016-05-18,0.065000
2023-11-21,0.037000