f/overrides/event-backup/dfgbx-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
1992-09-09,0.133000
1999-03-09,0.068000
2002-03-08,0.055000
2004-09-08,0.081000
2016-03-30,0.042000
1991-03-08,0.098000
1992-03-09,0.108000
1994-06-08,0.128000
1997-09-09,0.110000
2004-12-20,0.032000
2018-12-17,0.453000
1991-06-10,0.152000
1995-09-08,0.137000
2003-03-10,0.027000
2009-12-08,0.207000
2008-12-09,0.048000
2011-09-08,0.129000
2017-12-14,0.124000
2026-03-30,0.055000
1990-12-11,0.146000
1996-09-10,0.118000
2001-12-17,0.203000
2004-06-08,0.079000
2023-09-28,0.105000
2024-09-27,0.192000
1994-03-08,0.046000
1998-12-21,0.249000
2012-06-08,0.047000
2017-03-30,0.043000
2003-12-22,0.532000
2005-09-08,0.078000
2009-09-09,0.075000
1997-12-22,0.851000
2012-12-12,0.167000
2024-06-27,0.088000
1993-06-08,0.125000
1998-03-10,0.064000
2000-06-08,0.103000
2000-12-18,0.451000
2016-12-14,0.141000
1993-11-16,0.253000
1999-09-08,0.094000
2002-09-10,0.083000
2020-12-14,0.003000
1992-06-08,0.136000
1993-12-15,0.137000
2008-09-09,0.130000
2007-12-19,0.181000
2015-12-15,0.124000
2013-06-10,0.043000
1994-12-28,0.058000
1995-12-27,0.210000
1999-12-20,0.366000
2001-09-10,0.098000
2006-11-27,0.050000
2006-12-18,0.027000
2007-06-08,0.007000
2022-12-12,0.123000
2024-12-10,0.190000
1997-03-10,0.078000
2000-09-08,0.109000
2010-12-08,0.545000
2012-09-10,0.068000
2022-09-29,0.037000
2010-06-08,0.074000
2017-06-29,0.047000
2021-12-13,0.078000
1996-06-10,0.118000
1991-12-10,0.527000
1995-03-08,0.066000
2004-03-09,0.047000
1996-03-08,0.136000
2014-06-09,0.037000
2025-06-27,0.118000
2025-09-29,0.124000
1991-09-09,0.167000
2005-12-19,0.297000
2010-09-08,0.073000
2026-06-29,0.116000
2025-12-10,0.167000
1993-09-08,0.129000
1995-06-08,0.147000
1995-11-27,0.360000
2001-06-08,0.097000
2005-03-08,0.051000
2011-12-12,0.332000
2019-12-16,0.247000
1992-12-15,0.357000
1993-03-09,0.062000
1999-06-08,0.085000
2000-03-08,0.063000
2016-06-29,0.042000
1998-09-09,0.096000
2001-03-08,0.074000
2002-12-16,0.266000
2023-12-11,0.255000
1994-09-08,0.136000
1997-06-10,0.122000
1998-06-09,0.095000
2009-06-09,0.106000
1996-12-27,0.657000
2003-06-10,0.048000
2003-09-09,0.147000
2014-03-10,0.026000
2015-06-08,0.064000
2005-06-08,0.085000
2010-03-09,0.042000
2018-09-27,0.047000
2013-12-11,0.223000
2007-09-10,0.179000
2014-12-15,0.157000