f/overrides/event-backup/msfrx-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

493 lines
9.6 KiB
Plaintext

Date,Dividends
1995-10-31,0.054000
2001-09-28,0.040000
2010-04-30,0.033000
1975-03-31,0.110000
1988-09-30,0.160000
2020-08-31,0.030000
2008-08-29,0.032000
2018-07-31,0.032000
1998-06-30,0.051000
2007-12-11,1.315000
2009-10-30,0.028000
2011-01-31,0.026000
2011-07-29,0.028000
2018-05-31,0.030000
1993-09-30,0.148000
1996-07-31,0.052000
2008-10-31,0.032000
2012-09-28,0.029000
2010-11-30,0.026000
2019-10-31,0.034000
2022-02-28,0.022000
1994-11-30,0.047000
2006-09-29,0.031000
2015-07-31,0.030000
2018-08-31,0.032000
2021-11-30,0.023000
1998-12-02,2.070000
2008-05-30,0.035000
2016-12-30,0.060000
1975-12-31,0.111000
2004-12-31,0.043000
2013-05-31,0.027000
1984-03-30,0.154000
2009-12-31,0.028000
2004-07-30,0.031000
2006-05-31,0.031000
2011-08-31,0.028000
1981-12-31,0.160000
2001-03-30,0.040000
2018-12-31,0.045000
2022-04-29,0.022000
2025-02-28,0.039000
2004-01-30,0.030000
2010-05-28,0.026000
2022-03-31,0.022000
2025-08-29,0.040000
2007-12-31,0.035000
2020-12-31,0.042000
1991-09-30,0.117000
1994-03-31,0.138000
1994-04-29,0.045000
1994-07-29,0.043000
2001-12-31,0.036000
2012-08-31,0.029000
1976-09-30,0.114000
1977-09-30,0.124000
2024-09-30,0.037000
2013-02-28,0.029000
2016-08-31,0.030000
2021-08-31,0.014000
2025-05-30,0.040000
1986-12-31,0.137000
1999-12-31,0.039000
2013-04-30,0.027000
2014-09-30,0.034000
1976-12-31,0.121000
1998-05-29,0.050000
2010-03-31,0.028000
1997-11-28,0.050000
2006-08-31,0.031000
2006-12-07,0.601000
2010-02-26,0.028000
1980-06-30,0.135000
2006-06-30,0.031000
2021-06-30,0.030000
1996-08-30,0.052000
2020-12-17,1.047000
2017-04-28,0.030000
2022-07-29,0.022000
2000-04-28,0.039000
2010-01-29,0.028000
2002-08-30,0.034000
2011-11-30,0.030000
2021-03-31,0.030000
2024-03-28,0.037000
1995-07-31,0.054000
1995-08-31,0.054000
2025-04-30,0.039000
1982-12-31,0.160000
1995-04-28,0.052000
2009-06-30,0.028000
2014-12-31,0.037000
2003-07-31,0.028000
2008-07-31,0.032000
2003-08-29,0.027000
2002-04-30,0.036000
2002-12-31,0.034000
2012-03-30,0.029000
1996-02-29,0.050000
2002-05-31,0.035000
2000-09-29,0.040000
2023-07-31,0.036000
2024-12-19,1.173000
2026-07-31,0.039000
1995-01-31,0.050000
2000-05-31,0.039000
2004-08-31,0.032000
2013-12-10,0.142000
1978-12-29,0.125000
1996-11-29,0.052000
1999-06-30,0.035000
2004-03-31,0.030000
2009-04-30,0.028000
2020-10-30,0.030000
1997-07-31,0.050000
1998-03-31,0.045000
2007-11-30,0.035000
2024-10-31,0.040000
1984-06-29,0.155000
2009-05-29,0.028000
2023-10-31,0.048000
2025-12-18,1.219000
2007-05-31,0.034000
2012-05-31,0.029000
2017-07-31,0.030000
1977-03-31,0.115000
2003-09-30,0.021000
2001-06-29,0.040000
1993-06-30,0.145000
2000-12-29,0.040000
2020-06-30,0.030000
2019-11-29,0.035000
2004-04-30,0.031000
2012-01-31,0.029000
2008-09-30,0.032000
1996-01-31,0.051000
2001-02-28,0.040000
2005-12-30,0.031000
2013-09-30,0.027000
1994-10-31,0.044000
2021-04-30,0.030000
2003-06-30,0.032000
2009-09-30,0.028000
2014-08-29,0.034000
2015-05-29,0.030000
2015-10-30,0.030000
1989-09-29,0.175000
2002-09-30,0.034000
2014-10-31,0.034000
1984-12-31,0.153000
2003-03-31,0.034000
1992-06-30,0.155000
2009-02-27,0.032000
1998-10-30,0.051000
2011-10-31,0.030000
1994-05-31,0.045000
1973-12-31,0.108000
1986-06-30,0.149000
1999-10-29,0.038000
2015-06-30,0.030000
1997-06-30,0.049000
2006-11-30,0.031000
2014-11-28,0.034000
2015-12-22,0.514000
2018-02-28,0.030000
2025-01-31,0.039000
1997-08-29,0.050000
2004-02-27,0.030000
2021-12-16,1.491000
2023-12-29,0.048000
1998-07-31,0.051000
2010-06-30,0.026000
1996-03-29,0.050000
2019-04-30,0.030000
1990-09-28,0.172000
1995-05-31,0.052000
2024-05-31,0.037000
1995-11-30,0.054000
2016-01-29,0.030000
2019-03-29,0.030000
2022-11-30,0.032000
2014-03-31,0.030000
2015-03-31,0.030000
2024-11-29,0.046000
2026-05-29,0.041000
2000-07-31,0.040000
2014-04-30,0.033000
2015-08-31,0.030000
2024-01-31,0.036000
1989-03-31,0.155000
1996-10-31,0.052000
2015-11-30,0.030000
2018-12-20,0.470000
2019-09-30,0.034000
1979-09-28,0.133000
1983-06-30,0.163000
2000-11-30,0.595000
2003-10-31,0.030000
2024-02-29,0.037000
1974-03-29,0.108000
1987-12-28,0.150000
2007-07-31,0.035000
2012-10-31,0.029000
2016-06-30,0.030000
1996-04-30,0.052000
1999-07-30,0.035000
2010-09-30,0.026000
1990-03-30,0.160000
2008-01-31,0.035000
2007-08-31,0.035000
1974-12-31,0.110000
1979-06-29,0.135000
2010-07-30,0.026000
1983-12-30,0.153000
2002-11-29,0.033000
2002-01-31,0.036000
2025-10-31,0.046000
2021-05-28,0.030000
1979-03-30,0.130000
2013-11-29,0.027000
1980-03-31,0.135000
1980-12-31,0.143000
1996-09-30,0.052000
2004-05-28,0.031000
2004-09-30,0.032000
2015-04-30,0.030000
1974-06-28,0.108000
1975-09-30,0.110000
2016-05-31,0.030000
2007-02-28,0.039000
2018-04-30,0.030000
2026-03-31,0.040000
2000-10-31,0.040000
2002-07-31,0.034000
2013-06-28,0.027000
2019-07-31,0.032000
2019-08-30,0.032000
2020-01-31,0.030000
2022-08-31,0.022000
1999-02-26,0.051000
2003-05-30,0.033000
1986-03-31,0.145000
2008-02-29,0.035000
2012-07-31,0.029000
2022-05-31,0.022000
2023-06-30,0.034000
2024-04-30,0.037000
1985-09-30,0.156000
2014-01-31,0.030000
2012-11-30,0.029000
2019-12-31,0.035000
2023-12-21,0.732000
2001-01-31,0.040000
2011-03-31,0.026000
2014-05-30,0.034000
2026-01-30,0.040000
1999-04-30,0.040000
2008-11-28,0.032000
1975-06-30,0.110000
2010-10-29,0.026000
2007-01-31,0.039000
2017-05-31,0.030000
2019-05-31,0.030000
2021-02-26,0.030000
2022-12-15,0.646000
2023-11-30,0.043000
1977-12-30,0.123000
2001-08-31,0.040000
2007-10-31,0.035000
2022-12-30,0.092000
2024-12-31,0.048000
1998-01-30,0.050000
2005-11-30,0.794000
2023-05-31,0.034000
1995-03-31,0.052000
2003-01-31,0.034000
1996-05-31,0.052000
1998-09-30,0.051000
1999-12-02,0.941000
1976-06-30,0.112000
1994-06-30,0.045000
2002-02-28,0.036000
2005-07-29,0.031000
2010-12-31,0.026000
2021-09-30,0.024000
1978-03-31,0.121000
1988-06-30,0.158000
1989-06-30,0.160000
2001-05-31,0.040000
2006-01-31,0.031000
2006-03-31,0.031000
2009-03-31,0.028000
2012-06-29,0.029000
1977-06-30,0.118000
1981-03-31,0.150000
2017-09-29,0.030000
2013-08-30,0.027000
2015-12-31,0.109000
2023-01-31,0.027000
2023-09-29,0.049000
2012-04-30,0.029000
2020-09-30,0.030000
2011-02-28,0.026000
2021-01-29,0.030000
2023-04-28,0.034000
2024-08-30,0.037000
1985-06-28,0.156000
1985-12-31,0.150000
2000-06-30,0.040000
2006-04-28,0.031000
2013-01-31,0.029000
2016-12-22,0.248000
2022-01-31,0.022000
2025-11-28,0.047000
1992-03-31,0.160000
2003-02-28,0.034000
1994-09-30,0.044000
2022-06-30,0.022000
2003-11-28,0.030000
2015-09-30,0.030000
2016-04-29,0.030000
2023-02-28,0.027000
2026-02-27,0.040000
1981-06-30,0.158000
1985-03-29,0.155000
2004-10-29,0.035000
2016-10-31,0.030000
2020-07-31,0.030000
1973-06-29,0.105000
1982-03-31,0.163000
2009-07-31,0.028000
2017-08-31,0.030000
2007-06-29,0.034000
2008-12-31,0.036000
2016-02-29,0.030000
2017-06-30,0.030000
2017-10-31,0.030000
2001-07-31,0.040000
2005-01-31,0.034000
1994-12-30,0.047000
2023-08-31,0.041000
2006-02-28,0.031000
2012-02-29,0.029000
2009-08-31,0.028000
2017-12-29,0.037000
1998-02-27,0.045000
2007-03-30,0.039000
1987-03-31,0.136000
2005-02-28,0.034000
2005-03-31,0.034000
2006-07-31,0.031000
2018-01-31,0.030000
1983-09-30,0.163000
1998-04-30,0.050000
2009-11-30,0.028000
2011-04-29,0.026000
2020-03-31,0.030000
2006-10-31,0.031000
2007-09-28,0.035000
2016-11-30,0.031000
2017-11-30,0.032000
1994-08-31,0.043000
2014-02-28,0.030000
2008-03-31,0.035000
2002-06-28,0.034000
2004-06-30,0.031000
1999-08-31,0.035000
2011-09-30,0.028000
2016-03-31,0.030000
2018-09-28,0.032000
1992-09-30,0.126000
1997-03-31,0.049000
2011-06-30,0.026000
2016-07-29,0.030000
1997-12-31,0.050000
2015-01-30,0.030000
2025-09-30,0.046000
1986-09-30,0.150000
1997-02-28,0.049000
2000-01-31,0.039000
2001-11-30,0.390000
2005-05-31,0.031000
2010-08-31,0.026000
2012-12-31,0.055000
2015-02-27,0.030000
1991-03-28,0.160000
1998-12-31,0.051000
2021-07-30,0.014000
2026-04-30,0.041000
1999-01-29,0.051000
2003-04-30,0.034000
1973-09-28,0.105000
1997-09-30,0.050000
2020-02-28,0.030000
2014-12-22,0.434000
2020-05-29,0.030000
2020-11-30,0.030000
1993-12-31,0.140000
2013-10-31,0.027000
2000-02-29,0.039000
2013-07-31,0.027000
2022-10-31,0.025000
1995-12-29,0.052000
1999-03-31,0.045000
1997-01-31,0.049000
2000-08-31,0.040000
2002-03-28,0.036000
2007-04-30,0.034000
2018-10-31,0.032000
1981-09-30,0.160000
1991-06-28,0.158000
1997-04-30,0.049000
2013-12-31,0.038000
1990-12-28,0.170000
1992-12-28,0.155000
2016-09-30,0.030000
2017-02-28,0.030000
2018-03-29,0.030000
2019-01-31,0.030000
2021-10-29,0.024000
1984-09-28,0.158000
1987-06-30,0.142000
1997-05-30,0.049000
2014-06-30,0.034000
2026-06-30,0.039000
1995-06-30,0.052000
1995-09-29,0.054000
2017-12-21,0.715000
2018-06-29,0.032000
1998-11-30,0.051000
2011-05-31,0.026000
2013-03-28,0.029000
2019-12-19,0.261000
1983-03-31,0.160000
1989-12-29,0.170000
1980-09-30,0.138000
2001-10-31,0.040000
2004-11-30,0.423000
2021-12-31,0.022000
1987-09-30,0.144000
1999-09-30,0.035000
2008-04-30,0.035000
1996-06-28,0.052000
2001-04-30,0.040000
2025-06-30,0.040000
1974-09-30,0.108000
1979-12-31,0.133000
2020-04-30,0.030000
2024-06-28,0.037000
2024-07-31,0.037000
1978-09-29,0.125000
2018-11-30,0.032000
2017-03-31,0.030000
2019-02-28,0.030000
2019-06-28,0.030000
1997-12-02,1.366000
2017-01-31,0.030000
2005-10-31,0.031000
1978-06-30,0.123000
1982-09-30,0.165000
2022-09-30,0.022000
2025-12-31,0.045000
1998-08-31,0.051000
2006-12-29,0.031000
1999-11-30,0.039000
2005-04-29,0.031000
2005-06-30,0.031000
2005-08-31,0.031000
2014-07-31,0.034000
1982-06-30,0.165000
1993-03-31,0.140000
2011-12-30,0.048000
1991-12-12,0.165000
2003-12-31,0.030000
1988-03-31,0.150000
2002-10-31,0.034000
2025-07-31,0.040000
1995-02-28,0.052000
1996-12-31,0.049000
2009-01-30,0.032000
1976-03-31,0.111000
1990-06-29,0.163000
1999-05-28,0.035000
2005-09-30,0.031000
2023-03-31,0.031000
2025-03-31,0.039000
1988-12-30,0.155000
2008-06-30,0.035000
2000-03-31,0.039000
1996-12-03,1.063000
1997-10-31,0.050000