f/overrides/event-backup/etn-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

218 lines
4.2 KiB
Plaintext

Date,Dividends
1974-10-31,0.021693
2014-07-31,0.490000
1992-11-03,0.059654
2019-08-01,0.710000
1975-05-02,0.021693
2007-02-01,0.215000
2007-05-03,0.215000
1972-11-01,0.019282
2022-03-10,0.810000
1980-02-04,0.031093
2006-02-02,0.175000
2015-11-05,0.550000
2021-11-10,0.760000
2024-03-08,0.940000
1988-02-02,0.036154
1995-08-03,0.086770
1996-02-01,0.086770
1978-08-02,0.027092
1982-02-02,0.031093
1985-07-30,0.025308
2013-10-31,0.420000
2018-03-09,0.660000
2001-08-02,0.110000
2004-11-04,0.135000
2011-11-03,0.340000
2013-08-01,0.420000
2021-08-12,0.760000
2014-11-12,0.490000
1983-02-01,0.014462
1987-04-28,0.036154
2002-08-01,0.110000
2023-05-05,0.860000
2025-05-05,1.040000
1983-05-03,0.014462
1994-11-01,0.065078
2015-03-05,0.550000
2001-01-02,2.616000
2003-01-30,0.110000
2011-02-03,0.340000
2013-03-07,0.420000
1981-08-03,0.031093
1990-10-30,0.059654
2010-08-05,0.290000
2016-03-03,0.570000
2020-03-12,0.730000
1979-11-02,0.031093
1997-10-30,0.095447
2002-01-31,0.110000
2004-08-05,0.135000
1992-04-28,0.059654
1997-05-01,0.095447
2002-05-02,0.110000
1974-05-02,0.021693
2009-02-05,0.250000
2023-11-03,0.860000
2006-08-03,0.195000
1975-01-31,0.021693
1997-01-30,0.086770
1995-05-02,0.086770
1996-05-02,0.086770
1998-07-30,0.095447
2001-05-03,0.110000
1987-02-03,0.028923
1981-11-02,0.031093
1986-04-29,0.028923
2016-11-03,0.570000
1997-07-31,0.095447
2024-08-05,0.940000
1984-01-31,0.014462
1990-05-01,0.054231
2005-08-04,0.155000
1978-02-02,0.027092
1979-02-02,0.027092
2012-08-02,0.380000
2017-05-03,0.600000
2017-08-02,0.600000
1984-07-31,0.021693
2024-11-04,0.940000
1989-01-31,0.054231
2012-02-02,0.380000
2024-05-03,0.940000
1975-08-01,0.021693
1977-05-03,0.024103
2005-02-03,0.155000
2023-03-03,0.860000
2006-05-04,0.175000
2008-10-30,0.250000
2025-08-07,1.040000
1979-05-02,0.027092
1995-01-31,0.065078
2000-08-03,0.095447
1996-08-01,0.086770
1981-05-04,0.031093
1994-05-03,0.065078
2011-05-05,0.340000
1990-07-31,0.059654
1993-02-02,0.059654
2015-04-30,0.550000
1985-01-29,0.021693
1988-05-03,0.036154
2008-05-01,0.250000
1983-11-01,0.014462
2005-11-03,0.155000
2006-11-02,0.195000
1991-07-30,0.059654
1974-08-02,0.021693
1975-10-31,0.021693
1978-05-03,0.027092
2021-05-13,0.760000
1973-11-01,0.021693
2008-01-31,0.250000
2014-03-06,0.490000
1992-01-28,0.059654
2003-07-31,0.120000
1976-02-03,0.021693
1977-08-02,0.024103
1985-04-30,0.025308
1988-11-01,0.054231
2019-03-07,0.710000
2003-10-30,0.120000
2007-11-01,0.215000
2023-08-04,0.860000
1990-01-30,0.054231
1992-07-28,0.059654
1993-05-04,0.003688
1991-10-29,0.059654
2000-11-02,0.095447
2012-05-03,0.380000
1993-08-03,0.065078
1972-08-01,0.016872
1980-08-04,0.031093
1986-10-28,0.028923
1987-11-03,0.036154
1989-10-31,0.054231
2010-11-04,0.290000
1977-02-02,0.024103
1984-05-01,0.021693
2001-11-01,0.110000
1974-01-31,0.021693
2003-05-01,0.110000
2026-03-10,1.100000
2022-05-12,0.810000
1978-11-01,0.027092
1981-02-03,0.031093
2002-10-31,0.110000
1984-10-30,0.021693
2000-05-04,0.095447
2018-05-03,0.660000
1986-07-29,0.028923
1994-02-01,0.065078
1998-02-05,0.095447
1976-08-03,0.021693
1985-10-29,0.025308
1988-08-11,0.054231
1999-08-05,0.095447
2000-02-03,0.095447
1976-11-03,0.024103
1987-07-28,0.036154
2015-07-30,0.550000
2017-11-02,0.600000
1989-08-01,0.054231
1999-02-04,0.095447
1973-01-31,0.018077
1973-08-02,0.021693
2013-05-02,0.420000
2014-05-01,0.490000
2019-10-31,0.710000
2020-08-13,0.730000
2016-08-03,0.570000
1999-11-04,0.095447
2005-05-05,0.155000
1982-05-04,0.031093
2010-02-04,0.250000
2025-11-05,1.040000
1982-11-01,0.031093
1983-08-02,0.014462
1998-11-05,0.095447
2001-02-01,0.110000
2004-02-05,0.135000
1977-11-01,0.024103
1980-05-02,0.031093
1999-05-06,0.095447
2017-03-02,0.600000
2020-11-05,0.730000
2020-05-13,0.073000
2022-08-11,0.810000
2026-08-07,1.100000
1989-05-02,0.054231
2009-04-30,0.250000
2019-05-02,0.710000
2007-08-02,0.215000
2009-11-05,0.250000
2022-11-09,0.810000
1998-04-30,0.095447
2012-10-04,0.380000
2025-03-10,1.040000
1986-01-28,0.028923
1991-01-29,0.059654
2011-08-04,0.340000
1994-08-02,0.065078
2010-05-06,0.250000
1982-08-03,0.031093
2016-05-04,0.570000
1973-05-02,0.018077
1996-10-31,0.086770
1991-04-30,0.059654
1995-11-02,0.086770
2004-05-06,0.135000
2008-07-31,0.250000
2009-07-30,0.250000
1976-05-03,0.021693
1979-08-02,0.031093
1980-10-31,0.031093
2021-03-15,0.760000
1993-11-02,0.065078
2026-05-08,1.100000