f/overrides/event-backup/kie-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
2023-06-20,0.151000
2024-09-23,0.168000
2013-12-20,0.082333
2014-03-21,0.085667
2019-06-24,0.144000
2021-09-20,0.190000
2008-06-20,0.067000
2025-12-22,0.316000
2022-06-21,0.178000
2025-03-24,0.296000
2026-03-23,0.277000
2006-12-15,0.143333
2009-06-19,0.035333
2015-06-19,0.077667
2017-09-15,0.098000
2010-09-17,0.040667
2012-12-21,0.149000
2019-09-23,0.150000
2022-12-19,0.273000
2024-06-24,0.178000
2008-09-19,0.069667
2008-12-19,0.061667
2018-09-21,0.118000
2020-12-21,0.196000
2017-03-17,0.094000
2024-03-18,0.194000
2025-06-23,0.164000
2026-06-22,0.215000
2007-03-16,0.039333
2010-06-18,0.031333
2014-06-20,0.075333
2022-03-21,0.151000
2016-12-16,0.151333
2020-03-23,0.159000
2020-09-21,0.134000
2010-03-19,0.033333
2013-06-21,0.065667
2014-12-19,0.162333
2015-09-18,0.096000
2011-06-17,0.035333
2020-06-22,0.133000
2021-03-22,0.173000
2021-06-21,0.209000
2006-09-15,0.016333
2007-12-21,0.115333
2008-03-20,0.058000
2009-09-18,0.043000
2024-12-23,0.297000
2009-12-18,0.044000
2018-06-15,0.120000
2018-12-24,0.143000
2022-09-19,0.175000
2023-12-18,0.219000
2006-06-16,0.046667
2012-06-15,0.054667
2013-03-15,0.075667
2016-09-16,0.095000
2015-12-18,0.134667
2019-12-23,0.173000
2007-09-21,0.126000
2011-09-16,0.042333
2011-12-16,0.089667
2012-09-21,0.063333
2016-06-17,0.093333
2018-03-16,0.139000
2006-03-17,0.053000
2010-12-17,0.123667
2013-09-20,0.065667
2014-09-19,0.078667
2017-12-15,0.175000
2021-12-20,0.217000
2023-09-18,0.157000
2025-09-22,0.170000
2011-03-18,0.040000
2019-03-18,0.156000
2015-03-20,0.074667
2016-03-18,0.088333
2017-06-16,0.111667
2023-03-20,0.130000
2005-12-16,0.037667
2007-06-15,0.042000
2009-03-20,0.042333
2012-03-16,0.030333