f/overrides/event-backup/lprdx-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
2026-07-22,0.112000
2011-03-31,0.034000
2012-03-30,0.029000
2013-03-28,0.036000
2019-03-28,0.037000
2008-09-30,0.053000
2009-09-30,0.042000
2020-03-31,0.035000
2016-09-30,0.039000
2022-07-14,0.064000
2023-12-22,0.194000
2004-12-31,0.053000
2006-06-30,0.064000
2010-12-31,0.075000
2016-03-31,0.040000
2019-06-28,0.060000
2019-12-31,0.696000
2020-09-30,0.060000
2005-03-31,0.084000
2013-06-28,0.143000
2014-12-31,1.638000
2018-12-31,1.165000
2018-09-28,0.050000
2025-12-29,0.488000
2015-06-30,0.224000
2020-06-30,0.208000
2021-09-30,0.011000
2024-06-28,0.129000
2002-09-30,0.035000
2008-06-30,0.204000
2014-03-31,0.060000
2014-06-30,0.376000
2009-03-31,0.115000
2010-09-30,0.030000
2025-07-17,0.080000
2002-03-28,0.043000
2005-06-30,0.038000
2005-12-27,0.411000
2006-03-31,0.053000
2010-03-31,0.026000
2011-12-30,0.230000
2021-06-30,0.559000
2024-12-24,0.798000
2021-03-31,0.081000
2023-03-31,0.034000
2003-03-31,0.064000
2004-06-30,0.024000
2015-03-31,0.045000
2015-12-30,0.881000
2015-09-30,0.042000
2021-12-31,1.685000
2022-03-31,0.104000
2003-09-30,0.038000
2008-03-31,0.049000
2010-06-30,0.077000
2012-12-31,0.494000
2019-09-27,0.041000
2020-12-31,0.237000
2022-06-30,0.057000
2007-12-31,0.677000
2009-12-31,0.087000
2011-09-30,0.036000
2014-09-30,0.044000
2018-06-29,0.294000
2023-06-30,0.078000
2023-09-29,0.079000
2003-06-30,0.046000
2005-09-30,0.038000
2007-09-28,0.339000
2016-12-30,0.184000
2011-06-30,0.100000
2018-03-29,0.069000
2004-12-16,0.577000
2006-09-29,0.115000
2006-12-29,0.527000
2009-06-30,0.085000
2002-06-28,0.048000
2004-03-31,0.057000
2016-06-30,0.068000
2017-06-30,0.676000
2017-12-29,1.118000
2007-03-30,0.049000
2007-06-29,0.062000
2013-12-31,1.051000
2017-09-29,0.051000
2017-03-31,0.026000
2004-09-30,0.027000
2012-06-29,0.101000
2012-09-28,0.037000
2013-09-30,0.034000