f/overrides/event-backup/lprfx-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
2011-06-30,0.189000
2015-12-30,1.228000
2016-12-30,0.149000
2021-12-31,3.161000
2010-06-30,0.134000
2016-03-31,0.045000
2019-03-28,0.011000
2019-12-31,1.024000
2025-07-17,0.162000
2025-12-29,1.358000
2014-12-31,2.220000
2019-06-28,0.102000
2022-06-30,0.069000
2022-07-14,0.168000
2012-12-31,0.470000
2013-09-30,0.050000
2014-09-30,0.043000
2015-09-30,0.073000
2018-09-28,0.062000
2019-09-27,0.054000
2008-09-30,0.038000
2017-12-29,1.044000
2018-06-29,0.510000
2018-12-31,1.983000
2023-09-29,0.072000
2010-09-30,0.022000
2017-09-29,0.062000
2020-09-30,0.077000
2023-12-22,0.369000
2022-03-31,0.199000
2009-09-30,0.043000
2016-09-30,0.040000
2018-03-29,0.090000
2011-09-30,0.023000
2013-03-28,0.029000
2023-03-31,0.034000
2026-07-22,0.174000
2008-12-31,0.045000
2012-06-29,0.137000
2012-09-28,0.041000
2015-03-31,0.039000
2020-12-31,0.052000
2024-12-24,2.215000
2011-03-31,0.020000
2013-12-31,1.309000
2014-06-30,0.626000
2017-03-31,0.031000
2010-03-31,0.032000
2012-03-30,0.028000
2017-06-30,0.083000
2021-06-30,0.545000
2016-06-30,0.099000
2020-06-30,0.296000
2023-06-30,0.106000
2024-06-28,0.419000
2009-03-31,0.022000
2009-12-31,0.625000
2013-06-28,0.140000
2014-03-31,0.069000
2010-12-31,0.225000
2015-06-30,0.230000
2020-03-31,0.040000
2011-12-30,0.462000
2021-03-31,0.131000