f/overrides/event-backup/cvx-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

200 lines
3.9 KiB
Plaintext

Date,Dividends
1990-05-01,0.175000
1991-08-06,0.206250
1997-08-18,0.290000
2002-08-15,0.350000
2008-08-15,0.650000
2021-08-18,1.340000
2023-11-16,1.510000
2024-05-16,1.630000
1976-05-10,0.068750
1989-08-01,0.175000
1998-05-18,0.305000
2008-02-13,0.580000
2009-11-16,0.680000
2014-02-12,1.000000
1971-05-04,0.043750
1972-02-04,0.045313
1974-11-01,0.062500
1992-11-03,0.206250
2001-05-16,0.325000
2001-11-14,0.350000
2013-05-15,1.000000
2015-11-16,1.070000
2021-05-18,1.340000
2013-02-13,0.900000
1991-04-30,0.206250
1993-08-03,0.218750
2003-02-12,0.350000
2005-02-14,0.400000
2006-05-17,0.520000
2007-05-16,0.580000
2011-05-17,0.780000
2017-02-14,1.080000
2023-08-17,1.510000
1973-08-06,0.046875
1984-08-06,0.150000
2003-05-15,0.350000
2016-05-17,1.070000
2019-08-16,1.190000
2021-11-17,1.340000
2023-05-18,1.510000
2020-08-18,1.290000
1974-08-05,0.062500
1992-08-04,0.206250
1994-11-04,0.231000
2010-11-16,0.720000
2016-02-16,1.070000
2019-02-14,1.190000
2020-02-14,1.290000
2025-05-19,1.710000
1975-02-03,0.062500
1993-02-04,0.218750
2018-11-15,1.120000
1984-05-04,0.150000
1994-02-04,0.231250
1999-08-18,0.305000
2000-05-17,0.325000
2006-02-14,0.450000
2021-02-16,1.290000
1973-02-05,0.046875
1989-01-31,0.175000
2007-08-15,0.580000
2009-08-17,0.680000
2010-05-17,0.720000
2011-11-16,0.810000
2025-11-18,1.710000
1972-11-03,0.045313
1986-02-03,0.150000
1987-08-04,0.150000
1987-11-03,0.150000
1988-08-02,0.162500
2025-02-14,1.710000
1975-05-12,0.062500
1988-02-02,0.150000
2000-11-15,0.325000
2004-11-16,0.400000
2008-05-15,0.650000
2019-05-16,1.190000
1971-11-04,0.043750
1996-05-14,0.250000
2001-08-15,0.325000
2003-11-14,0.365000
2004-02-13,0.365000
2016-08-17,1.070000
2024-02-15,1.630000
2012-08-15,0.900000
1987-05-05,0.150000
1995-02-10,0.231000
1998-02-18,0.305000
2002-11-14,0.350000
2006-08-16,0.520000
2007-02-14,0.520000
2012-02-15,0.810000
2015-02-12,1.070000
2015-05-15,1.070000
2024-08-19,1.630000
2005-08-17,0.450000
1970-02-04,0.043750
1970-08-04,0.043750
1970-11-04,0.043750
1976-08-09,0.068750
1985-08-05,0.150000
1986-08-04,0.150000
1999-05-18,0.305000
2010-08-17,0.720000
2017-05-17,1.080000
2017-08-16,1.080000
2022-02-15,1.420000
2022-11-17,1.420000
2004-08-17,0.400000
1974-02-04,0.062500
1975-11-07,0.062500
1987-02-05,0.150000
1989-10-31,0.175000
1990-11-06,0.193750
1995-05-11,0.231000
2000-08-16,0.325000
2005-11-16,0.450000
2012-11-14,0.900000
2025-08-19,1.710000
2012-05-16,0.900000
1973-11-02,0.026563
1988-11-01,0.162500
1992-02-04,0.206250
1998-08-18,0.305000
2002-05-15,0.350000
2006-11-15,0.520000
2007-11-14,0.580000
2024-11-18,1.630000
1971-02-08,0.043750
1984-11-05,0.150000
1985-11-05,0.150000
1976-02-06,0.062500
1976-11-05,0.068750
1985-05-06,0.150000
1991-02-05,0.193750
2011-08-17,0.780000
2026-05-19,1.780000
2017-11-16,1.080000
2022-08-18,1.420000
1997-11-18,0.290000
2009-02-12,0.650000
2015-08-17,1.070000
2018-05-17,1.120000
1993-05-04,0.218750
1994-05-05,0.231250
2014-11-14,1.070000
2026-02-17,1.780000
2026-08-19,1.780000
1972-08-04,0.045313
1990-02-07,0.175000
1998-11-18,0.305000
2000-02-16,0.325000
2008-11-14,0.650000
2013-08-15,1.000000
1973-05-04,0.046875
1974-05-06,0.062500
1975-08-11,0.062500
1996-02-13,0.250000
2023-02-15,1.510000
1990-07-31,0.193750
1995-08-15,0.250000
1997-05-16,0.290000
2019-11-15,1.190000
1985-02-04,0.150000
1991-11-05,0.206250
1992-05-05,0.206250
1995-11-15,0.250000
1996-11-12,0.270000
2004-05-17,0.365000
2016-11-16,1.080000
1988-05-03,0.162500
1993-11-04,0.218750
1999-02-17,0.305000
2009-05-15,0.650000
2014-08-15,1.070000
1986-05-05,0.150000
1996-08-13,0.270000
2002-02-13,0.350000
2011-02-14,0.720000
2014-05-15,1.070000
1970-05-05,0.043750
1994-08-04,0.231000
2003-08-15,0.365000
2010-02-12,0.680000
2018-08-16,1.120000
2020-05-18,1.290000
2020-11-17,1.290000
1971-08-04,0.043750
1997-02-18,0.270000
2001-02-14,0.325000
2005-05-17,0.450000
2013-11-14,1.000000
2018-02-15,1.120000
1972-05-04,0.045313
1986-11-03,0.150000
1989-05-02,0.175000
1999-11-17,0.325000
2022-05-18,1.420000