f/overrides/event-backup/ed-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

227 lines
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Plaintext

Date,Dividends
2008-08-11,0.585000
2023-11-14,0.810000
2009-08-17,0.590000
1977-11-03,0.031250
1987-11-12,0.370000
1998-11-16,0.530000
2021-05-18,0.775000
1990-08-09,0.455000
2016-05-16,0.670000
2019-08-13,0.740000
1975-02-05,0.075000
1976-05-06,0.100000
1989-05-11,0.430000
2018-08-14,0.715000
2026-02-18,0.888000
2004-11-08,0.565000
2015-08-17,0.650000
1992-02-12,0.475000
2011-08-15,0.600000
1989-08-10,0.430000
2001-05-14,0.550000
1985-10-31,0.300000
1972-07-31,0.112500
2003-08-11,0.560000
2002-02-11,0.555000
2013-11-08,0.615000
2009-05-11,0.590000
1987-05-07,0.370000
1971-02-01,0.112500
2017-02-13,0.690000
1978-08-03,0.137500
1998-02-13,0.530000
2024-05-14,0.830000
1994-05-12,0.500000
1972-05-01,0.112500
1979-10-31,0.152500
1987-02-11,0.370000
1993-05-13,0.485000
2025-08-13,0.850000
2010-08-16,0.595000
2012-11-09,0.605000
1991-02-07,0.465000
2003-05-12,0.560000
2007-02-12,0.580000
1999-05-17,0.535000
2000-02-14,0.545000
2012-08-13,0.605000
2014-11-07,0.630000
2023-08-15,0.810000
1975-05-01,0.075000
1982-05-06,0.210000
1984-08-02,0.265000
2006-11-13,0.575000
2016-11-14,0.670000
2025-05-14,0.850000
1991-08-08,0.465000
2002-11-08,0.555000
2005-02-14,0.570000
2016-02-12,0.670000
1970-05-04,0.112500
1977-08-04,0.125000
2013-08-12,0.615000
2021-08-17,0.775000
2010-05-10,0.595000
2013-02-11,0.615000
1981-02-05,0.046250
1981-05-07,0.185000
1988-11-09,0.400000
2026-05-13,0.888000
1973-10-31,0.112500
1996-05-13,0.520000
2008-11-07,0.585000
1983-02-03,0.235000
2002-08-12,0.555000
2010-11-15,0.595000
2004-08-09,0.565000
2011-11-14,0.600000
2024-02-13,0.830000
1974-10-30,0.050000
1980-05-01,0.167500
1988-05-12,0.400000
2001-11-09,0.550000
2024-08-14,0.830000
2024-11-13,0.830000
2005-08-15,0.570000
2006-02-13,0.575000
2009-11-16,0.590000
2016-08-15,0.670000
2018-02-13,0.715000
1973-05-03,0.112500
1982-11-03,0.210000
2000-08-14,0.545000
2015-02-13,0.650000
1978-02-02,0.137500
1995-02-09,0.510000
2007-11-09,0.580000
2009-02-13,0.590000
2002-05-13,0.555000
2014-02-10,0.630000
2014-08-11,0.630000
1970-08-03,0.112500
1992-11-12,0.475000
2010-02-12,0.595000
1996-11-08,0.520000
2018-11-13,0.715000
1980-07-31,0.167500
1985-01-31,0.300000
1989-11-09,0.430000
2011-05-16,0.600000
2012-05-14,0.605000
2025-11-19,0.850000
1971-08-02,0.112500
1986-08-07,0.335000
2008-05-12,0.585000
2004-05-10,0.565000
2006-08-14,0.575000
2025-02-19,0.850000
2017-11-14,0.690000
1976-08-05,0.100000
1990-05-10,0.455000
2007-08-13,0.580000
1993-02-10,0.485000
1999-08-16,0.535000
2021-02-16,0.775000
1977-02-03,0.125000
1988-08-11,0.400000
2004-02-09,0.565000
2012-02-13,0.605000
1997-05-12,0.525000
1979-05-03,0.152500
1980-11-05,0.167500
1989-02-09,0.430000
2001-02-12,0.550000
1971-05-03,0.112500
1973-08-02,0.112500
1997-08-11,0.525000
2019-02-12,0.740000
1976-02-05,0.100000
1993-08-12,0.485000
1994-08-11,0.500000
2005-11-14,0.570000
2007-05-14,0.580000
1978-05-04,0.137500
1978-11-01,0.137500
1991-05-09,0.465000
2003-11-07,0.560000
2022-08-16,0.790000
1974-01-31,0.112500
1985-08-01,0.300000
1995-08-14,0.510000
1974-08-01,0.050000
1986-05-08,0.335000
2018-05-15,0.715000
2019-11-12,0.740000
1984-05-03,0.265000
1997-11-17,0.525000
2011-02-14,0.600000
1970-02-02,0.028250
1983-05-05,0.235000
2020-11-17,0.765000
2006-05-11,0.575000
1975-07-31,0.075000
1986-11-13,0.335000
2000-11-13,0.545000
2017-05-15,0.690000
2023-02-14,0.810000
2026-08-19,0.888000
1983-08-04,0.235000
1984-02-02,0.265000
1991-11-06,0.465000
2015-11-16,0.650000
1973-02-01,0.112500
1982-02-09,0.210000
1998-08-17,0.530000
2014-05-12,0.630000
1977-05-05,0.125000
1995-11-13,0.510000
2000-05-15,0.545000
1980-01-31,0.167500
1999-11-15,0.535000
2020-02-18,0.765000
1990-11-07,0.455000
1993-11-10,0.485000
1994-02-10,0.500000
1981-08-06,0.185000
1981-11-04,0.185000
1990-02-08,0.455000
2008-02-11,0.585000
2020-08-18,0.765000
1971-11-01,0.028250
2022-05-17,0.790000
1996-02-12,0.520000
1999-02-12,0.535000
2005-05-16,0.570000
2015-05-18,0.650000
2020-05-12,0.765000
1972-01-31,0.112500
1975-11-05,0.075000
1994-11-09,0.500000
2021-11-16,0.775000
2022-02-15,0.790000
1987-08-13,0.370000
1997-02-14,0.525000
1998-05-11,0.530000
2003-02-10,0.560000
2019-05-14,0.740000
2023-05-16,0.810000
2001-08-13,0.550000
2022-11-15,0.790000
1982-08-05,0.210000
1983-11-02,0.235000
1986-02-12,0.335000
1972-10-30,0.112500
2017-08-14,0.690000
1995-05-11,0.510000
1970-11-06,0.112500
1979-08-02,0.152500
1985-05-02,0.300000
1992-05-07,0.475000
1992-08-13,0.475000
1996-08-12,0.520000
2013-05-13,0.615000
1976-11-04,0.100000
1979-02-01,0.152500
1984-10-31,0.265000