f/overrides/event-backup/mittx-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

164 lines
3.2 KiB
Plaintext

Date,Dividends
1992-03-31,0.084000
1998-03-27,0.245000
2009-03-12,0.054000
2009-12-17,0.173000
1974-06-28,0.094000
1979-09-28,0.125000
1982-09-30,0.140000
1990-03-30,0.100000
2013-12-17,0.535000
2007-03-14,0.292000
2019-12-17,2.113000
1977-09-30,0.105000
1981-11-20,0.156000
1982-06-30,0.138000
2000-06-28,0.004000
1986-06-30,0.100000
1986-12-09,0.100000
1989-12-29,0.157000
1994-09-28,0.062000
1977-03-31,0.098000
1983-06-30,0.113000
1984-06-29,0.113000
1985-09-30,0.114000
2023-07-31,0.349000
1994-12-28,0.064000
2000-12-04,0.698000
2006-03-23,0.007000
2022-07-29,0.885000
1976-06-30,0.083000
1988-09-30,0.100000
1993-12-28,0.178000
2002-03-28,0.012000
1973-06-29,0.093000
1993-09-28,0.070000
2001-03-28,0.143000
2018-12-18,3.554000
1976-09-30,0.088000
1992-12-28,0.078000
2010-12-16,0.100000
2012-12-18,0.682000
2015-12-17,1.463000
1978-06-30,0.110000
1990-06-29,0.105000
1991-12-27,0.098000
2010-03-11,0.032000
1980-06-30,0.135000
2025-07-31,0.857000
2025-12-18,4.233000
1984-03-30,0.113000
1989-03-31,0.090000
1993-03-29,0.069000
1995-09-28,0.063000
1991-03-28,0.095000
1992-06-30,0.088000
2007-12-20,1.446000
2017-12-19,1.965000
2008-03-14,0.277000
1982-11-19,0.147000
1983-11-18,0.125000
1996-03-27,0.050000
1998-06-26,0.040000
1981-03-31,0.137000
2024-12-19,4.750000
1979-11-23,0.140000
1988-12-30,0.100000
1991-06-28,0.098000
2003-12-02,0.070000
2005-03-24,0.007000
2011-12-15,0.102000
2019-06-28,0.373000
1974-09-30,0.100000
1974-11-29,0.117000
1997-12-23,1.313000
2000-09-27,0.004000
1996-06-26,0.050000
1999-12-10,0.502000
2022-12-13,2.107000
1975-06-30,0.090000
1977-11-25,0.110000
1979-03-30,0.115000
1986-03-31,0.100000
1995-12-27,0.065000
1999-06-25,0.014000
2021-12-14,3.163000
1975-03-31,0.098000
1975-09-30,0.086000
1978-11-24,0.123000
1990-09-28,0.105000
2006-12-21,0.168000
2011-05-31,0.091000
2016-06-30,0.207000
2023-12-21,3.411000
1976-11-26,0.103000
1978-09-29,0.110000
1981-09-30,0.145000
1988-03-31,0.095000
1995-06-28,0.063000
1996-12-23,1.378000
2014-05-30,0.230000
2016-12-20,1.509000
1982-03-31,0.138000
1988-06-30,0.095000
1992-09-30,0.088000
1994-06-28,0.060000
2021-06-30,0.445000
2024-07-31,0.438000
1975-11-28,0.090000
1977-06-30,0.105000
1990-12-28,0.115000
2014-12-18,1.699000
1980-09-30,0.135000
1981-06-30,0.137000
1989-09-29,0.105000
2018-06-29,0.150000
1983-03-31,0.113000
1984-11-23,0.122000
2001-12-04,0.050000
1980-03-31,0.135000
1989-06-30,0.100000
1997-03-27,0.041000
1998-09-28,0.040000
1974-03-29,0.094000
1976-03-31,0.086000
1985-11-22,0.122000
1987-12-31,0.100000
1996-09-26,0.050000
2015-06-30,0.180000
1973-11-30,0.110000
1980-11-21,0.150000
1984-09-28,0.113000
1991-09-30,0.098000
2004-03-25,0.042000
2020-12-15,1.360000
1973-09-28,0.095000
1987-03-31,0.095000
1993-06-28,0.070000
1997-06-26,0.050000
2026-07-31,0.485000
1979-06-29,0.125000
1998-12-10,0.886000
2002-12-03,0.055000
2017-06-30,0.374000
1978-03-31,0.105000
1986-09-30,0.100000
2000-03-29,0.149000
2012-05-31,0.091000
1987-09-30,0.100000
1995-03-29,0.060000
1999-09-28,0.027000
2003-03-26,0.021000
2008-12-18,0.181000
2020-06-30,0.196000
1983-09-30,0.115000
1985-03-29,0.113000
1994-03-29,0.060000
1999-03-26,0.135000
2005-12-05,0.061000
1985-06-28,0.114000
1987-06-30,0.100000
1997-09-26,0.050000
2004-12-02,0.108000
2013-05-31,0.047000