f/overrides/event-backup/hal-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

219 lines
4.3 KiB
Plaintext

Date,Dividends
2004-03-02,0.062500
2002-02-26,0.062500
2004-11-29,0.062500
1981-05-28,0.071476
1987-08-28,0.059563
1994-11-25,0.059563
1995-02-24,0.059563
2012-06-04,0.090000
2016-09-02,0.180000
1978-08-28,0.041694
2002-09-03,0.062500
2011-05-27,0.090000
2019-06-04,0.180000
2023-09-05,0.160000
1982-02-24,0.095301
2013-03-04,0.125000
1981-08-31,0.071476
2005-08-31,0.062500
1984-08-28,0.107214
1985-02-26,0.107214
1993-11-24,0.059563
2010-02-26,0.090000
2009-05-28,0.090000
2023-06-06,0.160000
1976-05-28,0.016678
1990-02-23,0.059563
1997-06-02,0.062500
2006-11-29,0.075000
1974-03-04,0.011913
1980-05-29,0.059563
2000-11-28,0.062500
1974-08-30,0.011913
1982-05-26,0.095301
2018-09-04,0.180000
2024-06-05,0.170000
2024-12-04,0.170000
2001-06-04,0.062500
2001-09-04,0.062500
1980-11-24,0.035738
1986-08-26,0.059563
1983-05-25,0.095301
2014-12-03,0.180000
2024-03-05,0.170000
1988-08-26,0.059563
2022-09-06,0.120000
1979-08-28,0.053607
1987-05-27,0.059563
1991-02-28,0.059563
2005-05-31,0.062500
1997-11-28,0.062500
1973-12-03,0.011118
1977-08-29,0.029782
2003-11-28,0.062500
2007-05-30,0.090000
2018-03-06,0.180000
1985-05-28,0.107214
1994-08-26,0.059563
1996-08-30,0.062500
2016-12-05,0.180000
2020-09-01,0.045000
1973-06-04,0.011118
1979-05-24,0.053607
1982-11-24,0.095301
1989-02-24,0.059563
2014-03-03,0.150000
1985-11-25,0.107214
1993-02-25,0.059563
2008-08-28,0.090000
2011-08-30,0.090000
2017-06-05,0.180000
1989-05-25,0.059563
2008-05-29,0.090000
1990-05-25,0.059563
1992-02-27,0.059563
2007-08-29,0.090000
2007-11-29,0.090000
1986-11-24,0.059563
1994-05-25,0.059563
1981-11-24,0.095301
2011-02-28,0.090000
2022-05-31,0.120000
1983-08-29,0.095301
1993-05-26,0.059563
2002-11-25,0.062500
2013-12-04,0.150000
1974-06-03,0.011913
1976-11-29,0.045268
1987-03-02,0.059563
2009-02-27,0.090000
1984-05-25,0.107214
2001-02-27,0.062500
2021-12-08,0.045000
2020-06-02,0.045000
1989-08-28,0.059563
1996-11-27,0.062500
2013-06-03,0.125000
2022-12-07,0.120000
1984-02-24,0.107214
1997-03-03,0.062500
2005-03-01,0.062500
2021-06-01,0.045000
2017-12-06,0.180000
1972-06-05,0.010443
1995-11-28,0.059563
2012-08-31,0.090000
2021-03-02,0.045000
1972-12-04,0.010443
1983-02-23,0.095301
2003-09-02,0.062500
2006-05-30,0.075000
1975-12-01,0.013104
1981-02-25,0.071476
1986-05-27,0.059563
2000-02-29,0.062500
1988-02-29,0.059563
2008-12-01,0.090000
2015-12-01,0.180000
1980-08-29,0.059563
2000-05-30,0.062500
2014-08-29,0.150000
1973-08-31,0.011118
1978-05-25,0.041694
2011-11-30,0.090000
2019-12-04,0.180000
1979-02-26,0.053607
2023-02-28,0.160000
1978-02-27,0.041694
2006-02-28,0.075000
1973-03-05,0.011118
1992-11-25,0.059563
1977-05-27,0.029782
1977-11-28,0.041694
1995-08-29,0.059563
2014-06-02,0.150000
1975-06-02,0.013104
1993-08-26,0.059563
1996-06-03,0.062500
2009-12-01,0.090000
2012-12-04,0.090000
2025-06-04,0.170000
1980-02-27,0.059563
1983-11-25,0.107214
1994-02-24,0.059563
1998-03-02,0.062500
2003-03-04,0.062500
1988-11-25,0.059563
2019-03-05,0.180000
2022-03-01,0.120000
2000-09-01,0.062500
2003-06-03,0.062500
1975-08-29,0.013104
1991-11-20,0.059563
2008-02-28,0.090000
2010-05-27,0.090000
2010-12-01,0.090000
1977-02-28,0.029782
1984-11-26,0.107214
1990-08-29,0.059563
1992-05-28,0.059563
2006-08-30,0.075000
2012-03-05,0.090000
1976-08-30,0.016678
1986-02-25,0.107214
1989-11-27,0.059563
1987-11-24,0.059563
1999-11-29,0.062500
2025-03-05,0.170000
1972-09-01,0.010443
1976-03-01,0.016678
1988-05-26,0.059563
1999-08-31,0.062500
2019-09-03,0.180000
1978-11-27,0.053607
2007-02-27,0.075000
2018-12-06,0.180000
2024-09-04,0.170000
2025-12-03,0.170000
1999-03-02,0.062500
2004-06-01,0.062500
1985-08-27,0.107214
1991-08-28,0.059563
1998-06-01,0.062500
1998-09-01,0.062500
1998-11-27,0.062500
1996-03-04,0.062500
2005-11-29,0.062500
2025-09-03,0.170000
2017-02-27,0.180000
2020-12-02,0.045000
1974-12-02,0.011913
1995-05-25,0.059563
1999-06-01,0.062500
2013-08-30,0.125000
2015-03-02,0.180000
2016-02-29,0.180000
2026-06-03,0.170000
1990-11-21,0.059563
1982-08-30,0.095301
2002-06-04,0.062500
2004-08-31,0.062500
2021-08-31,0.045000
1997-08-29,0.062500
2001-11-27,0.062500
2015-08-31,0.180000
2023-12-06,0.160000
2010-08-30,0.090000
1991-05-30,0.059563
2009-08-31,0.090000
2018-06-05,0.180000
1975-03-03,0.013104
2016-05-27,0.180000
1979-11-28,0.059563
1992-08-27,0.059563
2015-06-01,0.180000
2020-03-03,0.180000
2026-03-04,0.170000
2017-09-01,0.180000