f/overrides/event-backup/jablx-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
1995-06-29,0.120000
2019-12-09,0.345000
2014-06-19,1.192000
2024-06-13,0.486000
2003-06-27,0.265000
2005-12-29,0.252000
2013-06-26,2.025000
2018-12-10,0.238000
2011-06-29,1.909000
2011-12-09,0.288000
2015-06-19,1.414000
1995-12-28,0.100000
2002-12-30,0.283000
2017-12-11,0.195000
2021-12-09,0.191000
1997-12-30,0.150000
2010-06-29,0.438000
2014-12-08,0.178000
2004-12-30,0.355000
2009-06-19,1.363000
2025-06-12,2.344000
2018-04-25,1.406000
2018-06-22,0.119000
2026-06-16,5.107000
1996-12-30,0.150000
2007-06-28,0.421000
2013-12-09,0.116000
2020-12-10,0.361000
2022-12-08,0.358000
2023-06-21,0.435000
2006-12-28,0.280000
2008-12-29,0.303000
2016-06-21,0.819000
2025-12-11,0.536000
1998-06-29,0.130000
2004-06-29,0.183000
2005-06-29,0.318000
2008-06-27,2.424000
2009-12-11,0.354000
2016-12-12,0.284000
1993-12-30,0.080000
1994-06-29,0.020000
2003-12-30,0.218000
2021-06-10,0.602000
1997-06-27,0.202000
2007-12-27,0.339000
2010-12-10,0.343000
2024-12-12,0.548000
2006-06-29,0.303000
2022-06-15,1.556000
2023-12-14,0.473000
2015-12-07,0.156000
2017-06-28,0.407000
2019-06-10,1.404000
1994-12-29,0.080000
1996-06-27,0.107000
2012-06-27,2.512000
2012-12-07,0.370000
2020-06-11,1.006000