f/overrides/event-backup/mmc-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

174 lines
3.4 KiB
Plaintext

Date,Dividends
2009-04-07,0.200000
2019-10-10,0.455000
2023-01-25,0.590000
1993-07-06,0.112500
1996-07-09,0.133333
2011-10-06,0.220000
2014-07-09,0.280000
2015-07-08,0.310000
2019-07-10,0.455000
2022-01-26,0.535000
2022-10-06,0.590000
2000-07-06,0.250000
2002-10-10,0.280000
1988-01-05,0.100000
2003-10-10,0.310000
1989-01-05,0.104167
1995-10-06,0.133333
2013-07-09,0.250000
1987-10-02,0.100000
1988-04-05,0.100000
2002-01-03,0.265000
2007-10-11,0.190000
2021-10-07,0.535000
2022-04-05,0.535000
1987-06-29,0.100000
1999-04-08,0.200000
2007-07-03,0.190000
2012-10-09,0.230000
1985-07-02,0.050000
1990-01-05,0.017333
1994-07-05,0.120833
2013-10-09,0.250000
1992-07-07,0.112500
2003-01-02,0.280000
2003-04-07,0.280000
2010-10-06,0.210000
1984-01-04,0.045833
1988-07-05,0.100000
2001-10-11,0.265000
2004-07-02,0.340000
2004-10-13,0.340000
2011-07-07,0.220000
2015-04-08,0.280000
2020-10-08,0.465000
1985-01-02,0.050000
2001-07-05,0.265000
1997-10-08,0.166667
2006-07-05,0.170000
2016-01-21,0.310000
2020-01-28,0.455000
1988-10-04,0.104167
1989-10-04,0.104167
2010-07-07,0.200000
2025-07-24,0.900000
1995-01-05,0.120833
2003-07-07,0.310000
2007-04-03,0.190000
2011-04-06,0.210000
2021-01-29,0.465000
1985-04-02,0.050000
1991-10-07,0.108333
1996-04-09,0.133333
2005-10-13,0.170000
2014-04-08,0.250000
2017-01-23,0.340000
2022-07-27,0.590000
2024-07-25,0.815000
1983-07-06,0.045833
1991-01-07,0.108333
2024-10-04,0.815000
2000-04-06,0.225000
2014-10-08,0.280000
2024-04-03,0.710000
1986-04-02,0.062500
1994-04-05,0.112500
2006-10-12,0.170000
1997-01-08,0.150000
2006-01-05,0.170000
2023-10-05,0.710000
1991-07-05,0.108333
1993-04-05,0.112500
2008-04-04,0.200000
2009-10-07,0.200000
2018-04-09,0.375000
2000-01-06,0.225000
2003-12-31,0.310000
1999-10-07,0.225000
2006-04-05,0.170000
2009-01-28,0.200000
2009-07-08,0.200000
2012-04-05,0.220000
2019-01-29,0.415000
1996-01-09,0.133333
1998-07-08,0.200000
2021-07-28,0.535000
2019-04-09,0.415000
2020-07-24,0.465000
2024-01-24,0.710000
1996-10-09,0.150000
1998-04-07,0.166667
1997-07-09,0.166667
2000-10-12,0.250000
2008-01-24,0.200000
1983-01-05,0.045833
1995-07-07,0.120833
2013-01-24,0.230000
2025-04-03,0.815000
2025-10-02,0.900000
1984-07-03,0.045833
2002-04-05,0.265000
1998-10-07,0.200000
2008-10-14,0.200000
2016-07-07,0.340000
2017-07-07,0.375000
1987-03-31,0.079167
1990-10-04,0.108333
1994-10-04,0.120833
2007-01-22,0.190000
2016-04-06,0.310000
2018-01-30,0.375000
1992-04-07,0.108333
1994-01-05,0.018833
2015-01-22,0.280000
1989-07-05,0.104167
1990-07-05,0.108333
1998-01-07,0.166667
2001-04-05,0.250000
2005-03-11,0.170000
2012-01-26,0.220000
1985-12-31,0.056250
1986-07-01,0.062500
2018-10-10,0.415000
1992-01-07,0.108333
2004-04-06,0.310000
2014-01-27,0.250000
2016-10-06,0.340000
2017-10-06,0.375000
2021-04-06,0.465000
1983-03-23,0.045833
1986-10-01,0.079167
1999-01-07,0.200000
2015-10-07,0.310000
2023-04-04,0.590000
1984-10-10,0.050000
1990-04-05,0.104167
1999-07-08,0.225000
2005-04-05,0.170000
2010-01-27,0.200000
2011-01-26,0.210000
1984-04-04,0.045833
1995-04-05,0.120833
2013-04-08,0.230000
2023-07-26,0.710000
2002-07-05,0.280000
2005-07-05,0.170000
1997-04-09,0.150000
2012-07-09,0.230000
2017-04-05,0.340000
2018-07-10,0.415000
1983-10-05,0.045833
1992-10-06,0.112500
1989-04-05,0.104167
1993-01-05,0.112500
1993-10-05,0.112500
2010-04-07,0.200000
1985-10-09,0.056250
1986-12-29,0.079167
2008-07-03,0.200000
2020-04-07,0.455000
2025-01-30,0.815000
1991-04-05,0.108333
2001-01-04,0.250000