f/overrides/event-backup/ktrax-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

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Date,Dividends
2018-12-31,0.015000
2020-09-23,0.064000
1986-05-16,0.070000
1986-08-15,0.070000
1993-12-20,0.060000
2009-12-16,0.121000
2010-06-23,0.032000
1987-08-14,0.070000
1990-11-20,0.280000
2010-03-24,0.053000
2018-03-22,0.080000
2021-06-23,0.069000
2021-09-23,0.064000
2022-03-24,0.041000
2023-12-15,0.066000
1987-02-13,0.070000
1989-11-16,0.110000
1993-09-20,0.060000
2007-09-21,0.059000
2019-12-16,0.076000
2025-06-23,0.089000
2025-12-15,0.621000
1982-02-05,0.070000
1992-03-19,0.030000
2006-06-23,0.050000
2019-06-21,0.079000
2019-09-23,0.079000
2007-06-22,0.079000
2014-03-24,0.076000
2017-03-24,0.055000
1987-12-22,0.010000
1988-05-20,0.070000
1991-12-19,0.140000
1998-03-24,0.070000
2006-09-22,0.050000
2025-09-23,0.099000
1984-02-06,0.070000
1996-03-14,0.060000
2008-03-24,0.071000
2026-03-24,0.069000
2025-03-24,0.084000
1991-05-16,0.090000
1997-09-23,0.080000
2004-06-23,0.035000
2014-09-23,0.099000
2018-09-21,0.089000
2011-03-24,0.033000
2012-09-21,0.075000
2013-03-21,0.060000
2024-06-21,0.096000
1990-05-17,0.090000
2011-09-23,0.032000
1981-02-09,0.070000
1981-11-05,0.100000
1996-12-18,1.585000
2017-12-15,0.762000
1992-06-17,0.060000
2010-12-15,0.026000
2023-09-22,0.071000
2024-12-16,1.211000
2026-06-23,0.090000
1988-08-18,0.080000
2003-03-24,0.035000
2006-12-15,0.100000
2011-06-23,0.035000
2011-12-15,0.036000
2013-06-21,0.070000
1983-08-03,0.070000
1995-06-16,0.070000
1998-09-23,0.075000
2003-06-23,0.029000
2012-06-22,0.055000
1988-02-19,0.060000
2001-12-20,0.056000
1986-02-14,0.070000
1995-09-18,0.070000
2001-03-23,0.065000
2001-06-22,0.050000
2001-09-21,0.055000
2009-09-23,0.030000
2013-12-16,0.244000
2016-03-23,0.060000
1984-08-07,0.070000
1997-03-20,0.070000
1999-12-21,0.535000
2000-12-21,0.915000
2006-03-24,0.050000
2024-03-21,0.081000
1980-05-15,0.070000
1980-11-06,0.265000
1996-09-18,0.070000
2015-09-23,0.100000
2020-12-15,0.044000
2008-09-23,0.057000
2021-12-15,0.861000
1980-08-05,0.070000
1989-02-16,0.030000
1995-03-16,0.045000
1998-12-22,0.758000
2005-03-24,0.050000
2005-12-20,0.063000
2019-03-22,0.079000
1990-08-16,0.090000
1993-03-19,0.030000
2000-09-22,0.060000
2004-03-24,0.040000
2004-12-20,0.055000
2016-06-23,0.070000
2022-06-23,0.069000
1985-05-13,0.070000
1987-11-13,0.075000
1989-05-18,0.090000
2002-03-21,0.051000
2012-12-17,0.335000
1997-06-19,0.080000
1998-06-23,0.075000
2000-03-24,0.070000
1981-08-06,0.070000
1983-02-03,0.070000
1992-09-18,0.060000
1994-12-21,0.060000
1996-06-13,0.070000
2022-09-23,0.060000
1994-05-25,0.040000
1999-03-24,0.083000
2002-09-23,0.044000
2003-12-19,0.036000
2023-06-23,0.074000
2017-06-23,0.065000
2018-06-22,0.080000
2020-06-23,0.072000
1991-08-19,0.090000
1994-03-17,0.045000
2000-06-23,0.070000
2004-09-23,0.035000
2005-06-23,0.050000
2022-12-15,0.057000
2014-06-23,0.084000
1982-05-14,0.070000
1983-11-10,0.090000
1999-09-23,0.075000
2009-03-24,0.032000
2010-09-23,0.037000
2023-03-24,0.054000
1981-05-14,0.070000
1997-12-22,1.643000
2007-03-23,0.079000
2009-06-23,0.032000
2016-12-15,0.070000
2008-06-23,0.066000
2015-06-23,0.095000
1982-08-05,0.070000
1989-08-17,0.090000
1989-12-20,0.060000
1990-02-15,0.030000
1993-06-18,0.040000
1994-09-19,0.080000
2012-03-23,0.037000
2015-03-24,0.080000
2018-12-17,0.169000
2015-12-15,0.082000
1982-11-09,0.115000
1983-05-13,0.070000
1985-02-08,0.070000
1991-02-19,0.030000
2005-09-23,0.050000
2016-09-23,0.050000
2020-03-24,0.069000
2024-09-23,0.098000
1986-11-10,0.070000
1987-05-14,0.070000
1999-06-23,0.073000
2002-06-21,0.050000
2010-04-01,0.050000
2003-09-23,0.032000
2007-12-14,0.123000
2013-09-23,0.085000
1980-02-06,0.065000
1985-08-12,0.070000
1988-11-16,0.200000
1995-12-18,0.140000
2002-12-20,0.040000
2014-12-16,0.825000
2017-09-22,0.080000
2021-03-24,0.044000
1984-05-15,0.070000
1984-11-12,0.100000
1992-12-21,0.110000
2008-12-16,0.033000