f/overrides/event-backup/gmrix-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
2013-03-15,0.054000
2016-03-11,0.019000
2017-12-18,2.441000
2018-03-09,0.023000
2020-03-09,0.007000
2023-06-12,0.037000
2002-06-21,0.022000
2009-09-18,0.014000
2020-12-29,0.002000
2002-03-22,0.017000
2016-09-12,0.023000
2009-06-19,0.014000
2010-03-19,0.013000
2011-06-17,0.040000
2015-03-13,0.031000
2018-09-10,0.036000
2005-03-24,0.029000
2007-03-23,0.067000
2007-12-21,0.031000
2016-06-10,0.036000
2024-03-11,0.010000
2000-12-18,0.043000
2004-06-25,0.021000
2014-06-13,0.028000
2014-12-16,1.164000
2022-12-21,0.126000
2000-09-26,0.024000
2009-12-18,0.044000
2008-12-19,0.036000
2009-03-20,0.021000
2010-06-18,0.030000
2010-09-17,0.028000
2012-03-16,0.011000
2015-09-10,0.038000
2001-06-27,0.023000
2006-12-27,1.097000
2019-06-07,0.025000
2025-12-18,0.319000
2017-09-11,0.030000
2019-03-08,0.010000
2012-06-15,0.026000
2013-12-18,1.028000
2018-12-18,3.845000
2003-06-20,0.020000
2005-06-24,0.040000
2006-06-23,0.053000
2008-03-20,0.032000
2012-12-19,0.600000
2019-12-18,0.699000
2020-12-21,0.053000
2023-09-11,0.034000
2002-09-20,0.019000
2004-03-26,0.021000
2024-12-19,0.548000
2011-12-19,0.432000
2020-06-08,0.016000
2003-12-26,0.199000
2011-09-16,0.027000
2005-12-28,0.529000
2007-04-11,0.234000
2010-04-30,0.028000
2017-03-10,0.018000
2021-12-21,0.853000
2001-09-26,0.026000
2003-03-21,0.016000
2006-09-22,0.057000
2014-03-14,0.011000
2017-06-09,0.023000
2018-12-19,0.088000
2019-09-09,0.032000
2024-09-09,0.076000
2004-12-28,0.042000
2006-03-24,0.042000
2015-06-12,0.036000
2020-09-08,0.023000
2022-06-06,0.034000
2022-09-12,0.030000
2023-12-20,0.072000
2001-03-28,0.017000
2004-09-24,0.024000
2014-02-13,0.008000
2016-12-16,0.996000
2023-03-13,0.014000
2026-03-18,0.020000
2007-06-22,0.055000
2010-12-27,0.048000
2018-06-08,0.021000
2021-09-07,0.016000
2025-06-09,0.045000
2002-12-27,0.027000
2008-09-19,0.038000
2014-09-16,0.023000
2021-06-07,0.010000
2003-09-11,0.016000
2007-09-21,0.050000
2005-09-23,0.042000
2010-12-30,0.004000
2012-09-07,0.030000
2013-06-21,0.002000
2015-12-17,1.538000
2026-06-17,0.040000
2000-06-27,0.049000
2001-12-20,0.026000