f/overrides/event-backup/feqtx-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
1992-06-19,0.080000
1994-06-17,0.100000
1999-06-11,0.100000
2004-12-17,0.600000
2006-10-06,0.100000
2009-04-03,0.095000
2009-07-10,0.065000
2022-10-07,0.132000
2023-04-05,0.079000
1999-09-10,0.057000
2010-07-09,0.065000
2012-10-05,0.109000
2013-10-04,0.102000
2021-12-28,2.793000
2026-07-10,0.156000
2022-07-01,0.170000
2014-10-03,0.121000
2018-12-26,2.686000
2011-04-06,0.049000
2016-01-15,0.032000
2021-10-01,0.155000
1993-01-08,0.050000
1997-12-19,2.600000
2002-09-13,0.060000
2014-04-04,0.244000
2019-07-05,0.164000
2024-07-05,0.199000
2000-03-10,0.090000
2000-06-09,0.100000
2020-07-10,0.163000
2024-04-05,0.109000
1994-09-16,0.100000
1997-03-07,0.120000
1998-06-05,0.090000
2010-10-01,0.060000
2023-10-06,0.151000
1996-06-14,0.130000
2001-06-08,0.080000
2003-06-06,0.050000
2005-07-01,0.080000
2007-10-05,0.080000
1990-12-14,0.060000
1993-12-17,0.860000
2001-03-09,0.110000
2005-04-01,0.080000
2024-10-04,0.168000
2002-01-04,0.210000
2003-09-12,0.050000
2003-12-19,0.080000
2008-10-03,0.080000
2014-12-12,0.190000
2016-07-08,0.058000
1991-09-13,0.100000
1992-12-18,0.460000
1997-09-12,0.100000
2000-12-22,5.050000
2006-12-15,1.290000
2007-01-05,0.900000
2010-12-10,0.086000
1994-12-16,0.950000
1995-12-15,0.610000
1996-03-08,0.100000
2002-03-08,0.060000
2003-03-07,0.060000
2005-10-07,0.090000
2009-10-02,0.057000
2016-04-08,0.120000
2017-12-26,2.382000
1995-09-15,0.100000
2002-12-20,0.070000
2004-06-18,0.070000
2005-12-16,1.810000
2006-01-06,0.190000
2008-12-12,0.074000
1998-03-06,0.070000
2014-07-03,0.123000
2018-10-05,0.151000
2019-04-05,0.127000
2023-12-26,0.989000
1993-06-11,0.090000
1995-06-16,0.100000
2006-04-07,0.070000
2023-07-07,0.198000
2025-12-26,1.846000
2001-01-05,0.150000
2020-04-03,0.113000
1991-03-22,0.120000
2006-07-07,0.070000
2017-04-07,0.162000
2019-12-27,1.735000
2021-04-05,0.104000
1991-12-20,0.080000
1992-09-11,0.080000
2000-09-15,0.110000
2004-10-08,0.080000
2017-07-07,0.139000
1991-07-12,0.160000
1997-01-03,0.120000
2005-01-07,0.190000
2013-07-05,0.126000
2016-10-07,0.136000
2016-12-27,1.296000
2004-03-05,0.060000
2008-01-11,0.170000
2009-12-11,0.060000
2013-12-13,0.140000
2015-12-11,0.994000
2021-07-02,0.161000
2026-04-01,0.147000
1994-01-07,0.030000
1996-09-13,0.130000
2008-04-04,0.090000
2015-01-16,0.084000
2020-12-29,0.232000
2024-12-26,1.884000
2025-04-04,0.153000
2001-09-21,0.080000
2007-12-14,1.140000
2025-07-11,0.151000
1995-01-06,0.010000
2015-07-01,0.143000
1993-09-10,0.090000
1996-01-05,0.100000
2000-01-07,0.050000
2018-07-06,0.162000
2025-10-03,0.168000
1992-03-13,0.080000
1994-03-11,0.090000
1998-09-11,0.080000
2001-12-21,0.700000
2022-04-01,0.096000
1997-06-06,0.120000
1999-12-17,3.400000
2012-04-04,0.093000
2011-12-09,0.109000
2012-07-06,0.119000
2013-04-05,0.097000
2017-10-06,0.132000
2018-04-06,0.139000
1999-03-12,0.070000
2002-06-07,0.160000
2008-07-11,0.100000
2012-12-14,0.146000
2019-10-04,0.133000
2022-12-27,1.561000
1996-12-27,1.190000
1998-01-02,0.430000
1998-12-18,2.310000
1999-01-08,0.200000
2007-07-06,0.090000
2011-07-08,0.099000
2011-10-07,0.090000
2015-04-01,0.106000
2015-10-02,0.143000
1993-03-12,0.090000
1995-03-10,0.100000
2007-04-04,0.090000
2020-10-02,0.110000