f/overrides/event-backup/dfrex-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
2013-03-08,0.049000
2015-12-15,0.325000
1993-11-16,0.190000
2008-06-10,0.167000
2014-03-10,0.113000
2014-06-09,0.254000
2016-03-30,0.352000
2017-06-29,0.325000
2018-09-27,0.606000
2021-09-29,0.011000
1998-12-21,0.650000
2011-12-12,0.290000
2022-06-29,0.023000
1995-12-27,0.143000
2020-12-14,0.652000
2010-03-09,0.069000
2012-06-08,0.129000
2012-12-12,0.336000
2019-06-27,0.172000
2022-03-30,0.091000
2026-06-29,0.162000
1995-04-28,0.006000
2007-11-26,0.075000
2014-12-15,0.430000
2018-12-17,0.436000
2023-03-30,0.121000
1995-11-27,0.480000
2004-09-08,0.030000
2013-09-10,0.036000
2015-03-09,0.290000
2019-12-16,0.501000
2024-03-27,0.137000
1993-11-30,0.190000
2009-06-09,0.117000
2006-11-27,0.280000
2009-03-10,0.083000
2014-09-09,0.062000
2018-06-28,0.351000
2020-06-29,0.121000
2023-12-11,0.934000
1993-12-15,0.038000
2004-12-20,1.226000
2021-12-13,1.082000
2022-09-29,0.095000
2025-09-29,0.197000
1993-12-31,0.038000
2015-06-08,0.334000
2005-09-08,0.190000
2006-09-08,0.250000
2010-09-08,0.128000
2025-06-27,0.035000
1996-12-27,0.680000
2001-12-17,0.881000
2004-06-08,0.145000
2007-03-08,0.146000
2007-12-19,2.190000
2009-09-09,0.177000
2010-06-08,0.128000
2013-12-11,0.438000
1997-12-22,0.750000
1999-12-20,0.650000
2024-12-10,0.663000
2026-03-30,0.159000
2017-12-14,0.607000
2018-03-28,0.201000
2011-09-08,0.042000
2023-06-29,0.176000
2025-03-28,0.145000
2005-12-19,0.751000
2011-06-08,0.049000
2016-12-14,0.735000
2021-06-29,0.129000
2024-06-27,0.195000
2025-12-10,0.752000
1994-12-28,0.090000
2013-06-10,0.262000
2016-06-29,0.313000
2017-03-30,0.182000
2024-09-27,0.200000
2002-12-16,0.833000
2007-06-08,0.267000
2010-12-08,0.226000
1994-11-28,0.323000
2008-03-10,0.043000
2012-09-10,0.307000
2017-09-28,0.048000
2019-09-27,0.079000
2020-09-29,0.151000
2020-12-30,0.179000
2021-03-30,0.107000
2000-12-18,0.800000
2008-12-09,0.453000
2006-12-18,1.085000
2009-12-08,0.221000
2019-03-28,0.161000
2020-03-30,0.157000
2022-12-12,2.080000
2023-09-28,0.179000
2003-12-22,0.876000
2006-06-08,0.145000