f/overrides/event-backup/gabvx-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
1998-12-29,1.490000
1999-12-27,1.720000
2012-12-27,0.996000
2000-12-27,1.753000
2001-12-31,0.060000
2013-12-12,0.488000
2015-12-29,2.455000
2019-12-27,1.423000
2018-12-27,1.236000
1990-12-31,0.420000
1991-12-31,0.334000
1994-12-30,1.600000
1995-12-27,1.230000
2007-12-27,1.650000
2003-12-22,0.241000
2011-12-28,1.700000
2017-12-27,1.056000
2025-12-29,1.268000
2001-12-27,0.515000
2010-12-29,0.464000
2014-12-29,1.837000
1992-12-31,0.553000
1996-12-27,1.110000
2022-12-28,1.746000
2024-12-27,0.759000
2008-12-29,0.349000
2016-12-28,1.099000
2021-12-29,1.650000
1989-12-29,0.054000
1993-12-31,2.036000
1997-12-29,2.720000
2004-12-29,0.774000
2005-12-28,1.350000
1990-03-19,0.120000
2006-12-27,4.454000
2009-12-29,0.148000
2020-12-29,1.249000
2023-12-27,1.157000