f/overrides/event-backup/ehstx-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

201 lines
3.9 KiB
Plaintext

Date,Dividends
2004-06-09,0.045000
2006-12-27,0.460000
2007-09-11,0.071000
2015-09-09,0.060000
1982-01-04,0.130000
1990-01-02,0.140000
2009-06-09,0.071000
2013-09-10,0.065000
2014-06-10,0.080000
2014-09-09,0.080000
2015-03-10,0.080000
2019-06-11,0.060000
2018-03-09,0.060000
1980-01-02,0.110000
1981-10-01,0.150000
1984-01-03,0.160000
1987-01-02,0.130000
1987-07-01,0.120000
1989-10-02,0.140000
2003-02-11,0.030000
2022-12-09,0.786000
1988-04-04,0.110000
1998-12-22,0.587000
1999-04-16,0.217000
2011-06-09,0.048000
2015-05-21,0.253000
2017-06-09,0.060000
2022-06-09,0.055000
1981-01-02,0.130000
1993-01-04,0.070000
2001-10-19,0.060000
2004-01-06,0.079000
2012-12-19,0.101000
2014-03-11,0.080000
2014-12-16,7.248000
1992-04-01,0.080000
1997-01-15,0.050000
2023-09-11,0.058000
2017-12-14,0.969000
1981-04-01,0.150000
1981-07-01,0.150000
1994-07-01,0.065000
1995-07-03,0.060000
2000-12-12,0.600000
2003-12-09,0.050000
2011-09-09,0.068000
2023-06-09,0.060000
2024-09-10,0.062000
2020-03-10,0.060000
1980-10-01,0.130000
1986-04-01,0.150000
1997-07-16,0.040000
1998-01-16,0.040000
2007-03-13,0.171000
2016-03-09,0.060000
2016-06-09,0.060000
2022-09-09,0.060000
2008-03-11,0.072000
2008-06-10,0.074000
2018-09-11,0.060000
2026-03-10,0.051000
1980-04-01,0.100000
1993-07-01,0.070000
1993-10-01,0.060000
1999-07-16,0.010000
2005-06-09,0.056000
2019-09-10,0.060000
2024-06-11,0.087000
1982-07-01,0.160000
1985-07-01,0.150000
1989-07-03,0.120000
1998-10-20,0.015000
2025-06-10,0.075000
1993-04-01,0.070000
1997-10-20,0.040000
1999-12-14,1.832000
2001-04-17,0.025000
2002-04-09,0.040000
2002-06-17,0.037000
2018-06-11,0.060000
2020-12-10,0.079000
1989-01-03,0.120000
1994-10-03,0.065000
1997-04-15,0.450000
2001-03-16,0.346000
2007-12-24,0.211000
2010-06-09,0.049000
2012-03-09,0.049000
2024-12-10,0.872000
2007-06-11,0.087000
1982-04-01,0.150000
1998-04-16,0.020000
1999-10-18,0.055000
2000-10-17,0.040000
2001-01-17,0.020000
2005-09-09,0.049000
2005-12-21,0.189000
2013-03-11,0.075000
2021-03-09,0.060000
1989-04-03,0.120000
1998-07-16,0.015000
2000-04-18,0.899000
2006-09-11,0.061000
2015-12-17,1.386000
2018-12-07,1.466000
2024-03-11,0.048000
1987-10-01,0.120000
1997-12-29,3.210000
2010-03-09,0.041000
2017-09-11,0.060000
2018-08-09,0.159000
2022-03-09,0.060000
1991-07-01,0.110000
1996-04-15,0.055000
2020-06-09,0.060000
2026-06-09,0.064000
1992-01-02,0.090000
2007-03-09,0.058000
2021-12-09,1.596000
2023-12-11,0.518000
1983-07-01,0.140000
1990-04-02,0.130000
1992-10-01,0.070000
1995-01-03,0.065000
2004-12-09,0.048000
2011-03-09,0.044000
2011-12-28,0.114000
2012-09-11,0.084000
1984-07-02,0.140000
1988-10-03,0.120000
1991-10-01,0.110000
1995-04-03,0.060000
2002-07-09,0.040000
2005-03-09,0.033000
2008-09-09,0.062000
2020-09-09,0.060000
1983-10-03,0.150000
1995-10-02,0.060000
1996-07-15,0.055000
1996-10-15,0.050000
1999-01-19,0.010000
2003-05-13,0.030000
2006-06-09,0.066000
2021-09-09,0.060000
2000-07-18,0.020000
1983-04-04,0.140000
1984-04-02,0.140000
2005-12-09,0.063000
2023-03-09,0.060000
2015-06-09,0.060000
1986-10-01,0.130000
1988-07-01,0.110000
1991-04-01,0.110000
1996-01-15,0.060000
2006-03-28,0.146000
2009-03-10,0.071000
2009-09-09,0.040000
2016-12-15,0.060000
2025-03-11,0.064000
2004-09-14,0.040000
2012-06-11,0.084000
2017-03-09,0.060000
2020-08-18,0.149000
2025-09-09,0.048000
2016-09-09,0.060000
1980-07-01,0.120000
1983-01-03,0.150000
1986-01-02,0.150000
1987-04-01,0.120000
1992-07-01,0.080000
2002-01-09,0.020000
2010-09-09,0.045000
2019-03-11,0.060000
2025-12-09,1.451000
1996-12-16,1.475000
2009-12-30,0.041000
2010-12-29,0.051000
1982-10-01,0.160000
1984-10-01,0.150000
1988-01-04,0.110000
1994-01-03,0.060000
2004-03-09,0.045000
2008-12-30,0.069000
2021-06-09,0.060000
1986-07-01,0.150000
1990-07-02,0.130000
2003-08-12,0.040000
2019-12-17,0.234000
1990-10-01,0.230000
1994-04-04,0.060000
2001-07-17,0.020000
2006-03-09,0.068000
2013-06-11,0.080000
1985-01-02,0.150000
1985-04-01,0.150000
1985-10-01,0.140000
1991-01-02,0.130000
2000-01-18,0.010000
2013-12-19,1.039000