f/overrides/event-backup/fiscx-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

283 lines
5.5 KiB
Plaintext

Date,Dividends
2025-12-22,2.108000
1989-08-15,0.057000
1999-12-15,0.060000
2003-12-15,0.181000
2007-12-17,0.783000
2017-03-15,0.076000
2013-03-15,0.070000
2023-09-20,0.050000
1988-12-15,0.057000
1998-07-15,0.050000
2001-02-15,0.063000
1990-08-15,0.057000
1999-05-17,0.050000
2000-04-17,0.050000
2003-06-16,0.137000
1993-07-15,0.057000
1993-08-13,0.057000
1997-11-14,0.050000
1996-12-16,0.951000
2010-04-20,0.041000
2012-12-17,0.194000
1990-06-15,0.057000
1995-12-15,0.050000
1996-02-15,0.050000
1993-04-15,0.057000
1998-03-16,0.050000
2001-07-16,0.063000
2015-03-16,0.034000
1987-12-15,0.055000
1988-02-12,0.057000
1992-11-13,0.057000
1997-06-13,0.050000
1997-12-15,1.137000
2000-01-18,0.050000
2023-03-20,0.045000
1993-10-15,0.057000
1996-10-15,0.050000
1997-02-14,0.050000
1995-08-15,0.050000
2009-09-15,0.163000
2019-06-17,0.067000
1989-11-15,0.057000
2006-06-15,0.139000
2022-12-15,1.530000
2001-08-15,0.063000
2005-06-15,0.153000
2005-09-15,0.137000
2015-09-15,0.138000
1990-07-13,0.057000
1994-01-14,0.053000
1995-11-15,0.050000
2021-09-15,0.029000
1993-03-15,0.057000
1996-09-13,0.050000
2019-12-16,1.687000
1999-01-15,0.050000
2000-12-15,0.819000
2012-09-17,0.136000
1995-05-15,0.050000
1998-04-15,0.050000
1998-05-15,0.050000
1995-09-15,0.050000
1994-02-15,0.053000
1998-06-15,0.050000
2000-09-15,0.063000
2002-09-16,0.063000
1989-05-15,0.057000
1989-12-15,0.068000
1991-10-15,0.057000
1988-07-15,0.057000
2008-12-15,0.196000
2002-02-15,0.063000
2010-03-15,0.107000
1988-04-15,0.057000
1997-09-15,0.050000
1998-02-17,0.050000
2020-06-15,0.065000
2021-06-15,0.038000
1994-07-15,0.046000
2000-06-15,0.050000
2011-12-15,0.144000
1990-02-15,0.057000
1992-06-15,0.057000
1995-02-15,0.050000
1990-03-15,0.057000
1995-04-13,0.050000
2001-11-15,0.063000
2010-09-15,0.061000
1992-02-13,0.057000
1993-05-14,0.057000
2004-12-15,0.228000
2002-06-19,0.043000
1988-08-15,0.057000
1998-01-15,0.050000
2000-02-15,0.050000
1995-03-15,0.050000
1999-07-15,0.050000
2025-06-20,0.088000
1991-03-15,0.057000
2016-12-15,0.524000
1999-08-16,0.050000
1988-05-13,0.057000
1989-03-15,0.057000
1990-04-12,0.057000
1992-05-15,0.057000
2002-01-15,0.063000
2018-09-17,0.118000
1990-12-14,0.204000
1998-09-15,0.050000
2010-12-15,0.171000
1993-02-12,0.057000
1994-08-15,0.046000
1994-10-14,0.046000
1996-11-15,0.050000
2017-12-15,1.213000
1988-09-15,0.057000
1991-06-14,0.057000
1992-08-14,0.057000
2018-03-15,0.085000
1998-10-15,0.050000
2001-03-15,0.063000
2024-12-20,0.794000
2025-09-22,0.089000
1989-09-15,0.057000
1991-02-15,0.057000
1998-08-17,0.050000
1989-07-14,0.057000
1992-07-15,0.057000
2022-03-21,0.043000
1989-02-15,0.057000
1996-07-15,0.050000
2002-12-13,0.114000
2024-09-20,0.078000
1998-11-16,0.050000
2001-04-16,0.063000
2009-06-15,0.133000
2000-10-16,0.063000
2004-06-15,0.190000
2010-12-30,0.017000
2011-06-15,0.152000
2012-06-15,0.149000
1989-01-13,0.057000
1994-06-15,0.046000
1994-12-15,0.046000
2020-03-16,0.099000
2002-08-15,0.063000
1989-10-13,0.057000
1994-03-15,0.053000
1996-04-15,0.050000
1992-09-15,0.057000
2016-09-15,0.135000
2018-12-17,1.027000
2021-03-15,0.116000
2021-12-15,5.274000
1988-06-15,0.057000
2006-09-15,0.142000
2015-06-15,0.074000
2009-12-15,0.197000
1994-09-15,0.046000
1995-10-13,0.050000
2006-12-15,1.398000
2017-06-15,0.111000
2019-03-15,0.045000
1987-09-15,0.050000
1987-10-15,0.050000
2002-05-15,0.063000
1989-06-15,0.057000
1992-04-15,0.057000
2005-12-15,0.843000
2011-03-15,0.074000
2014-03-17,0.049000
1992-10-15,0.057000
1995-06-15,0.050000
2005-03-14,0.087000
1988-10-14,0.057000
2013-06-17,0.106000
2019-09-16,0.067000
1991-12-13,0.057000
1993-09-15,0.057000
2000-11-15,0.063000
2024-03-20,0.041000
2025-03-20,0.080000
1987-11-13,0.050000
1999-02-16,0.050000
2004-09-15,0.170000
1999-11-15,0.050000
2012-03-15,0.086000
1994-04-15,0.053000
2000-05-15,0.050000
2006-03-13,0.101000
2001-10-15,0.063000
2007-03-12,0.096000
1990-01-15,0.057000
1997-08-15,0.050000
2000-08-15,0.063000
1993-06-15,0.057000
1994-11-15,0.046000
1995-07-14,0.050000
1996-05-15,0.050000
2003-09-15,0.153000
1988-03-15,0.057000
1989-04-14,0.057000
1990-10-15,0.057000
2009-03-16,0.097000
2008-06-13,0.079000
2016-03-15,0.090000
1990-09-14,0.057000
1995-01-13,0.050000
1999-03-15,0.050000
1993-01-15,0.057000
1997-01-15,0.050000
2026-06-22,0.072000
1987-08-14,0.050000
1991-08-15,0.057000
1991-11-15,0.057000
1997-03-14,0.050000
2001-09-17,0.063000
2001-12-14,0.078000
2002-04-15,0.063000
2010-06-15,0.155000
1988-11-15,0.057000
1991-04-15,0.057000
1996-03-15,0.050000
2023-06-20,0.032000
1988-01-15,0.057000
1991-01-15,0.057000
2013-12-16,0.216000
2015-12-15,0.564000
1990-05-15,0.057000
2000-07-17,0.050000
2014-06-16,0.080000
2011-09-15,0.123000
2014-09-15,0.065000
2020-12-15,2.977000
2024-06-20,0.056000
2001-06-15,0.063000
2007-09-17,0.133000
2008-03-17,0.035000
2013-09-16,0.103000
1993-11-15,0.053000
2023-12-20,0.333000
2026-03-20,0.064000
2020-09-15,0.057000
2002-03-15,0.063000
2008-09-15,0.434000
2016-06-15,0.074000
1990-11-15,0.057000
1996-06-14,0.050000
2002-10-18,0.042000
2002-07-18,0.043000
2003-03-17,0.096000
2022-12-20,0.034000
1992-03-13,0.057000
1997-10-15,0.050000
2022-09-20,0.034000
1997-05-15,0.050000
1999-10-15,0.050000
2022-06-21,0.035000
1997-07-15,0.050000
1998-12-15,0.092000
2000-03-15,0.050000
2001-01-16,0.063000
2007-06-08,0.162000
1991-05-15,0.057000
1991-07-15,0.057000
1997-04-15,0.050000
1992-01-15,0.057000
1992-12-15,0.057000
1999-06-15,0.050000
1999-04-15,0.050000
2017-09-15,0.097000
2018-06-15,0.117000
1991-09-13,0.057000
1996-01-15,0.050000
1996-08-15,0.050000
2001-05-15,0.063000
2004-03-15,0.128000
2014-12-15,0.822000
1993-12-15,0.053000
1994-05-13,0.046000
1999-09-15,0.050000