f/overrides/event-backup/fkutx-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

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Date,Dividends
2013-12-02,0.180000
2016-03-01,0.115000
1988-12-06,0.145000
1991-12-06,0.145000
1994-03-04,0.131000
1994-12-02,0.138000
2006-09-01,0.101000
2012-06-01,0.110000
1984-06-01,0.130000
1990-12-07,0.150000
2015-03-02,0.115000
2016-12-01,0.142000
2021-06-01,0.120000
2008-06-02,0.101000
2015-12-01,0.676000
2019-09-03,0.120000
2021-12-01,0.732000
2024-09-20,0.120000
2023-12-20,0.886000
2025-06-20,0.120000
1983-03-01,0.120000
1988-06-06,0.140000
1993-06-07,0.138000
2005-06-01,0.101000
2015-09-01,0.115000
2019-03-01,0.120000
1983-12-01,0.130000
1989-03-07,0.145000
2002-07-01,0.032000
2005-09-01,0.101000
2020-03-02,0.120000
2024-12-20,1.688000
1984-09-04,0.130000
1993-09-03,0.131000
1996-09-03,0.131000
1997-12-01,0.393000
1998-09-01,0.131000
2016-06-01,0.115000
2017-12-01,0.485000
2018-06-01,0.120000
1981-03-02,0.110000
1981-06-01,0.110000
1985-03-01,0.130000
1991-06-07,0.145000
2009-09-01,0.105000
2015-06-01,0.115000
2019-12-02,0.511000
2020-12-01,1.584000
1989-12-07,0.159000
1996-06-03,0.131000
2002-12-02,0.112000
2003-12-01,0.101000
2008-09-02,0.101000
2020-06-01,0.120000
1988-03-07,0.140000
1998-12-01,0.462000
2007-03-01,0.101000
2023-06-20,0.120000
2025-12-22,1.601000
1980-12-01,0.110000
1982-09-01,0.120000
2001-12-03,0.579000
2007-09-04,0.101000
2013-09-03,0.115000
2017-03-01,0.115000
1986-12-05,0.151000
2003-09-02,0.101000
2014-09-02,0.115000
1983-06-01,0.130000
1999-12-01,0.476000
2004-03-01,0.101000
2007-06-01,0.101000
2008-12-01,0.190000
2013-03-01,0.115000
1980-06-02,0.095000
1984-12-03,0.130000
1985-09-03,0.130000
2009-03-02,0.101000
2016-09-01,0.115000
2017-09-01,0.120000
2026-03-20,0.120000
1980-09-02,0.100000
1984-03-01,0.130000
1992-09-04,0.138000
1997-03-03,0.131000
1997-06-02,0.131000
1998-03-02,0.131000
1981-12-01,0.110000
1995-09-01,0.131000
1995-12-01,0.203000
2005-12-01,0.200000
2021-09-01,0.120000
1983-09-01,0.120000
1987-09-02,0.140000
2012-03-01,0.110000
2001-06-01,0.112000
2009-06-01,0.105000
1982-12-01,0.120000
1987-12-04,0.145000
1994-06-03,0.131000
2002-10-01,0.032000
1990-06-08,0.145000
1991-09-06,0.150000
1996-03-01,0.131000
1999-09-01,0.131000
2013-06-03,0.115000
2014-12-01,0.548000
1995-06-01,0.131000
2004-06-01,0.101000
2018-03-01,0.120000
2010-12-01,0.112000
2011-03-01,0.105000
1982-03-01,0.115000
1982-06-01,0.120000
1987-06-05,0.140000
1992-12-04,0.138000
1996-12-02,0.558000
2006-06-01,0.101000
2011-09-01,0.105000
2020-09-01,0.120000
2022-06-21,0.120000
2022-12-20,0.135000
2026-06-22,0.120000
2010-03-01,0.105000
2010-06-01,0.105000
1985-12-02,0.135000
1988-09-08,0.145000
1991-03-07,0.145000
2000-09-01,0.112000
2001-03-01,0.112000
2009-12-01,0.297000
2017-06-01,0.120000
2022-09-20,0.120000
1986-03-06,0.140000
2001-09-04,0.112000
2003-06-02,0.101000
2004-09-01,0.101000
2014-06-02,0.115000
1989-06-07,0.145000
1995-03-01,0.131000
2000-03-01,0.112000
2002-09-03,0.112000
2025-03-20,0.120000
2004-12-01,0.141000
2005-03-01,0.101000
2014-03-03,0.115000
2022-03-21,0.120000
2018-12-03,0.731000
1981-09-01,0.110000
1989-09-08,0.145000
2000-06-01,0.112000
2000-12-01,0.129000
2006-12-01,0.565000
2012-12-03,0.163000
1997-09-02,0.131000
1999-03-01,0.131000
1980-03-03,0.095000
1985-06-03,0.130000
1992-06-05,0.138000
1993-03-05,0.138000
1993-12-03,0.171000
1994-09-02,0.131000
2002-03-01,0.112000
2002-06-03,0.032000
2021-03-01,0.120000
2023-09-20,0.120000
1986-09-08,0.140000
1987-03-06,0.140000
1998-06-01,0.131000
2010-09-01,0.105000
2018-09-04,0.120000
2023-03-20,0.120000
1992-03-06,0.138000
2003-03-03,0.112000
2007-12-03,0.836000
2019-06-03,0.120000
2024-06-20,0.120000
2025-09-22,0.120000
1986-06-06,0.140000
1990-03-07,0.145000
2008-03-03,0.101000
2011-06-01,0.105000
2022-12-15,0.309000
2024-03-20,0.120000
1990-09-07,0.145000
1999-06-01,0.131000
2004-01-05,0.028000
2006-03-01,0.101000
2011-12-01,0.129000
2012-09-04,0.110000