f/overrides/event-backup/cficx-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

494 lines
9.6 KiB
Plaintext

Date,Dividends
1997-01-30,0.087000
2007-06-28,0.063000
2010-10-28,0.044000
2011-10-27,0.047000
2020-09-30,0.043000
2023-06-30,0.059000
2022-10-31,0.049000
1997-11-25,0.081000
2000-04-28,0.094000
2011-02-24,0.046000
2004-12-09,0.435000
1990-02-20,0.104000
2004-04-28,0.038000
2011-09-29,0.043000
2013-09-26,0.038000
2018-10-29,0.051000
1989-02-17,0.106000
1995-07-24,0.086000
2025-09-30,0.063000
2025-11-28,0.060000
1991-10-21,0.109000
1999-07-29,0.089000
2006-08-24,0.069000
2021-12-31,0.037000
1990-05-21,0.116000
1994-11-21,0.095000
2007-01-25,0.070000
1990-03-26,0.115000
2008-03-27,0.073000
2009-12-23,0.041000
2011-04-28,0.045000
2008-05-29,0.067000
2011-01-27,0.046000
2014-12-29,0.039000
2015-12-29,0.041000
2018-03-26,0.044000
2025-07-31,0.062000
2026-04-30,0.056000
2013-07-25,0.037000
2013-10-30,0.038000
2016-10-27,0.043000
2020-05-29,0.049000
1997-04-24,0.079000
2008-09-25,0.057000
2011-05-26,0.042000
2011-07-28,0.046000
2013-04-25,0.036000
2018-04-26,0.042000
1991-08-26,0.115000
1996-12-26,0.093000
2001-10-25,0.083000
2001-12-27,0.083000
2002-06-26,0.090000
2023-12-29,0.064000
1988-04-22,0.121000
1990-06-25,0.110000
1991-11-25,0.106000
1995-12-26,0.095000
2000-12-07,0.161000
2004-10-27,0.039000
2024-08-30,0.067000
1998-11-24,0.098000
1999-01-28,0.076000
2011-03-30,0.043000
1993-11-22,0.173000
1998-03-26,0.083000
2006-07-27,0.070000
2011-11-22,0.047000
2011-12-22,0.047000
2018-09-25,0.042000
1986-03-31,0.130000
2022-12-30,0.054000
1991-01-21,0.110000
1998-06-25,0.094000
2017-04-27,0.044000
2025-03-31,0.062000
2012-03-29,0.036000
1986-06-30,0.135000
1994-12-27,0.101000
1995-09-25,0.081000
2019-09-30,0.046000
2021-11-30,0.043000
1989-07-24,0.107000
1991-07-22,0.110000
1994-09-26,0.105000
2005-12-08,0.217000
1988-05-23,0.134000
2004-02-25,0.035000
2008-12-23,0.051000
2023-10-31,0.064000
1986-12-31,0.100000
2019-10-31,0.046000
1992-10-26,0.106000
1998-12-23,0.915000
1999-06-24,0.077000
2008-02-27,0.065000
2008-06-26,0.057000
2010-06-24,0.046000
2010-11-23,0.040000
2017-05-25,0.042000
1987-10-23,0.121000
2004-06-24,0.045000
2012-01-26,0.040000
2012-02-23,0.044000
2009-03-26,0.054000
1990-11-26,0.106000
1995-11-27,0.078000
1988-07-25,0.117000
1989-12-26,0.113000
2001-11-28,0.098000
2006-12-27,0.063000
1993-05-24,0.104000
2011-08-25,0.042000
2013-08-29,0.037000
2019-05-31,0.048000
2025-04-30,0.063000
1986-09-30,0.128000
1997-03-26,0.096000
2004-01-28,0.043000
2012-05-30,0.045000
2012-11-29,0.039000
2017-06-28,0.040000
2022-07-29,0.045000
2023-05-31,0.063000
1987-09-23,0.120000
1990-10-22,0.115000
2003-09-25,0.060000
2007-10-25,0.070000
2020-10-30,0.040000
1989-08-23,0.116000
1990-07-23,0.114000
1992-04-20,0.106000
2012-09-27,0.050000
2013-12-26,0.039000
1988-06-20,0.113000
2001-06-27,0.080000
2002-02-21,0.075000
2016-03-29,0.042000
2002-05-29,0.092000
2019-02-28,0.048000
1987-04-23,0.134000
2002-08-28,0.079000
2023-04-28,0.058000
2020-01-31,0.044000
2026-06-30,0.059000
1989-05-22,0.117000
2004-09-23,0.039000
2010-07-29,0.047000
2012-08-30,0.045000
1992-07-27,0.106000
1993-12-27,0.107000
2004-03-25,0.036000
2017-08-30,0.040000
2019-06-28,0.047000
1989-09-25,0.151000
1990-01-22,0.113000
1993-03-22,0.106000
1994-01-24,0.095000
1999-09-23,0.082000
2024-03-28,0.065000
1991-12-23,0.109000
1998-09-24,0.092000
2003-02-26,0.060000
2017-12-27,0.037000
1989-01-23,0.116000
1993-01-25,0.103000
2008-12-03,0.045000
1997-08-28,0.085000
2005-05-26,0.051000
2009-07-30,0.040000
2014-07-30,0.041000
2015-09-24,0.044000
2020-06-30,0.043000
2021-08-31,0.043000
1998-07-30,0.094000
2014-01-30,0.039000
1994-03-21,0.107000
1996-09-26,0.090000
2007-04-26,0.068000
2010-02-25,0.041000
2010-04-30,0.039000
2012-12-27,0.039000
2005-04-27,0.052000
2005-07-27,0.052000
1993-08-23,0.098000
2024-12-31,0.067000
1999-05-27,0.087000
2013-11-21,0.037000
2020-12-31,0.041000
1988-11-21,0.115000
2008-07-30,0.060000
2026-05-29,0.057000
2007-08-29,0.060000
2026-07-31,0.064000
1997-05-29,0.086000
2000-09-27,0.098000
2001-04-26,0.094000
2005-11-22,0.059000
2016-01-28,0.041000
1998-08-27,0.096000
2013-01-30,0.036000
2022-01-31,0.038000
2022-09-30,0.047000
2023-02-28,0.062000
1989-04-24,0.114000
1996-04-25,0.082000
1997-09-25,0.084000
2008-08-27,0.057000
2010-09-29,0.047000
2025-05-30,0.064000
2001-09-26,0.073000
2003-08-27,0.059000
2007-07-26,0.064000
2007-12-06,0.282000
2008-01-30,0.071000
2014-04-24,0.044000
2016-09-28,0.045000
2026-03-31,0.057000
2004-11-23,0.050000
2019-08-30,0.046000
2020-02-28,0.050000
2022-03-31,0.040000
2006-09-27,0.066000
2022-04-29,0.040000
1991-06-24,0.109000
1998-10-29,0.090000
2002-11-21,0.108000
2003-06-26,0.039000
2015-03-26,0.035000
2021-07-30,0.037000
1988-08-22,0.113000
1989-03-27,0.126000
1989-06-26,0.107000
2014-08-28,0.042000
2000-11-21,0.107000
2007-11-28,0.069000
2007-12-27,0.066000
2008-10-29,0.056000
2017-07-27,0.040000
1986-11-28,0.127000
2004-08-26,0.046000
2005-12-28,0.056000
2006-03-29,0.055000
2010-05-27,0.042000
1994-06-20,0.105000
1995-03-27,0.101000
2001-12-06,0.621000
2018-12-21,0.064000
2025-02-28,0.061000
1987-01-29,0.046000
1995-02-21,0.090000
1996-03-28,0.090000
1997-02-27,0.077000
1999-02-25,0.071000
2015-02-26,0.034000
1990-08-27,0.120000
2016-05-26,0.042000
2022-02-28,0.045000
1994-07-25,0.094000
1995-01-23,0.096000
1996-07-25,0.084000
2006-10-26,0.062000
2007-03-29,0.061000
2010-08-26,0.041000
2015-04-23,0.036000
1996-08-29,0.089000
2000-12-21,0.111000
2001-02-22,0.097000
2002-09-26,0.060000
2005-06-23,0.042000
2006-01-26,0.061000
2016-06-28,0.047000
1996-06-27,0.109000
2021-09-30,0.037000
1989-10-23,0.113000
1991-09-23,0.106000
1994-10-24,0.096000
2002-12-27,0.065000
2003-11-20,0.054000
1992-05-26,0.109000
2003-03-27,0.067000
2003-05-28,0.051000
2003-12-29,0.860000
2009-06-25,0.050000
2011-06-29,0.043000
2012-07-26,0.048000
2012-11-01,0.043000
2013-03-27,0.037000
1988-12-27,0.118000
2019-12-31,0.047000
2024-06-28,0.067000
1996-11-26,0.092000
2005-10-27,0.053000
2014-02-27,0.039000
2015-10-29,0.035000
2021-10-29,0.036000
2015-11-24,0.037000
1987-03-30,0.119000
2003-04-24,0.050000
2005-08-25,0.055000
2024-01-31,0.064000
2025-08-29,0.063000
2000-03-28,0.093000
2015-08-27,0.039000
1991-02-19,0.101000
1998-01-29,0.078000
2002-07-25,0.100000
2010-12-22,0.043000
2021-01-29,0.038000
1992-02-24,0.103000
2000-01-27,0.092000
2017-10-26,0.034000
2018-08-29,0.049000
1991-05-28,0.109000
2018-06-26,0.041000
1993-04-26,0.099000
1995-08-21,0.084000
1998-04-23,0.074000
1993-09-20,0.107000
2006-05-25,0.064000
2009-01-29,0.061000
2016-12-27,0.043000
2018-11-28,0.049000
2023-09-29,0.063000
1986-05-30,0.135000
1987-02-26,0.119000
1998-02-26,0.071000
1988-03-24,0.164000
1990-04-23,0.110000
1993-02-22,0.098000
1996-10-24,0.078000
1997-07-24,0.088000
2003-10-29,0.062000
2020-11-30,0.048000
2022-06-30,0.043000
1989-11-20,0.115000
1995-10-23,0.083000
2010-01-28,0.046000
2023-01-31,0.055000
1986-01-31,0.130000
1986-07-31,0.143000
1990-12-24,0.114000
1997-12-23,0.733000
2023-03-31,0.023000
1994-02-28,0.087000
1996-05-23,0.074000
2002-03-26,0.097000
2013-02-27,0.041000
2016-04-28,0.043000
2024-09-30,0.067000
2025-12-31,0.062000
1990-09-24,0.113000
2005-01-27,0.046000
2006-04-26,0.063000
2025-06-30,0.064000
1992-09-21,0.105000
1999-12-22,0.348000
2009-05-28,0.053000
1992-08-24,0.104000
1995-04-24,0.092000
1998-05-28,0.082000
1999-03-25,0.076000
1999-04-29,0.079000
2009-11-24,0.039000
2019-01-29,0.042000
2019-07-31,0.046000
1993-06-21,0.096000
2000-05-25,0.106000
2009-09-24,0.032000
2014-10-30,0.040000
1988-02-22,0.125000
1995-06-26,0.094000
2000-08-24,0.107000
2009-04-29,0.054000
2012-04-26,0.046000
2017-09-27,0.039000
2017-11-29,0.044000
2024-02-29,0.068000
2024-11-29,0.064000
1993-07-26,0.099000
2018-07-27,0.046000
2023-08-31,0.063000
1988-09-26,0.110000
1988-10-24,0.114000
1992-01-27,0.105000
2005-09-28,0.051000
2009-02-26,0.069000
2014-11-25,0.042000
2018-01-29,0.043000
2025-10-31,0.061000
2003-01-29,0.075000
2004-05-26,0.041000
2004-12-28,0.043000
2006-11-21,0.066000
2017-02-23,0.044000
2021-02-26,0.046000
1987-08-31,0.120000
2009-10-29,0.042000
2016-02-25,0.041000
2022-08-31,0.052000
1986-02-28,0.130000
1992-11-23,0.104000
1996-02-22,0.069000
2006-06-28,0.065000
2020-07-31,0.043000
2021-03-31,0.040000
2024-07-31,0.067000
1994-04-25,0.095000
1997-06-26,0.084000
2000-02-24,0.093000
2010-03-25,0.041000
2017-03-29,0.043000
1997-10-30,0.081000
2009-08-27,0.035000
2015-07-30,0.039000
2020-03-31,0.044000
2026-01-30,0.059000
1999-10-28,0.084000
2001-08-29,0.091000
2012-06-28,0.048000
1987-12-21,0.124000
1988-01-22,0.076000
2002-04-25,0.088000
2005-03-23,0.038000
2019-04-30,0.047000
2024-04-30,0.066000
2024-05-31,0.069000
2002-12-05,0.099000
2018-02-26,0.038000
1992-06-22,0.113000
1995-05-22,0.091000
2018-05-29,0.049000
2021-06-30,0.039000
2023-11-30,0.067000
2021-04-30,0.040000
1991-03-25,0.110000
1992-12-21,0.110000
2001-05-24,0.081000
2003-07-24,0.053000
2016-11-29,0.045000
1994-08-22,0.091000
2006-02-23,0.067000
2026-02-27,0.060000
2022-11-30,0.058000
1991-04-22,0.108000
2000-10-31,0.106000
2014-06-26,0.042000
2016-07-28,0.040000
1999-11-23,0.089000
2001-01-25,0.113000
2001-03-28,0.099000
2014-09-25,0.032000
2022-05-31,0.048000
1992-03-23,0.108000
2015-01-29,0.040000
2020-04-30,0.043000
2021-05-28,0.046000
1987-05-22,0.125000
1999-08-26,0.083000
2007-02-22,0.067000
2013-06-27,0.036000
2015-06-25,0.037000
2019-03-29,0.047000
2025-01-31,0.062000
1993-10-25,0.094000
2024-10-31,0.065000
2002-01-24,0.089000
2017-01-26,0.043000
1987-11-20,0.109000
2007-09-27,0.070000
2013-05-30,0.035000
1986-04-30,0.133000
2004-07-28,0.046000
2016-08-30,0.045000
1987-06-23,0.130000
1987-07-24,0.140000
2000-07-27,0.112000
2015-05-28,0.035000
1986-10-31,0.094000
1994-05-23,0.096000
2008-04-24,0.076000
2014-05-29,0.040000
1996-01-25,0.071000
2008-11-25,0.062000
2023-07-31,0.061000
2000-06-29,0.096000
2001-07-26,0.088000
2020-08-31,0.047000
1986-08-29,0.128000
2007-05-30,0.062000
2014-03-27,0.039000
2019-11-29,0.049000