f/overrides/event-backup/lprex-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
2005-03-31,0.077000
2006-03-31,0.047000
2019-09-27,0.045000
2020-09-30,0.067000
2002-06-28,0.041000
2003-06-30,0.049000
2006-12-29,0.164000
2010-03-31,0.025000
2016-06-30,0.145000
2016-12-30,0.110000
2019-03-28,0.040000
2019-06-28,0.076000
2008-09-30,0.047000
2008-12-31,0.007000
2014-12-31,2.117000
2018-06-29,0.401000
2020-12-31,0.394000
2021-06-30,0.792000
2003-09-30,0.035000
2004-03-31,0.061000
2012-09-28,0.042000
2023-12-22,0.582000
2024-06-28,0.394000
2005-12-27,0.082000
2006-06-30,0.050000
2009-12-31,0.101000
2013-09-30,0.039000
2015-03-31,0.045000
2017-09-29,0.056000
2017-12-29,1.522000
2020-03-31,0.031000
2025-07-17,0.182000
2007-06-29,0.052000
2007-09-28,0.043000
2008-03-31,0.043000
2012-06-29,0.125000
2019-12-31,0.949000
2022-03-31,0.135000
2014-06-30,0.516000
2015-12-30,1.322000
2025-12-29,0.943000
2004-06-30,0.018000
2007-03-30,0.045000
2009-09-30,0.038000
2010-12-31,0.092000
2015-06-30,0.278000
2015-09-30,0.056000
2021-03-31,0.113000
2021-12-31,2.748000
2004-12-31,0.061000
2006-09-29,0.043000
2007-12-31,0.819000
2009-03-31,0.110000
2016-03-31,0.045000
2023-03-31,0.031000
2005-06-30,0.022000
2011-06-30,0.117000
2014-09-30,0.048000
2017-03-31,0.049000
2018-12-31,1.562000
2008-06-30,0.207000
2009-06-30,0.101000
2011-09-30,0.033000
2012-12-31,0.610000
2016-09-30,0.041000
2018-09-28,0.049000
2023-06-30,0.088000
2002-09-30,0.033000
2023-09-29,0.070000
2013-03-28,0.029000
2013-12-31,1.400000
2020-06-30,0.271000
2024-12-24,1.442000
2002-03-28,0.026000
2005-09-30,0.021000
2012-03-30,0.033000
2018-03-29,0.071000
2022-07-14,0.111000
2004-09-30,0.020000
2010-09-30,0.029000
2014-03-31,0.070000
2017-06-30,1.007000
2026-07-22,0.139000
2003-03-31,0.069000
2010-06-30,0.091000
2011-03-31,0.030000
2011-12-30,0.169000
2013-06-28,0.170000
2022-06-30,0.065000