f/overrides/event-backup/dfigx-capitalGain.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,Capital Gains
2020-12-14,0.337000
1993-12-15,0.160000
2009-12-09,0.051000
2012-12-12,0.023000
1991-12-10,0.058000
1995-12-27,0.044000
2003-12-22,0.286000
2005-12-19,0.063000
2006-12-18,0.004000
2002-12-16,0.196000
2004-12-20,0.036000
2011-12-12,0.093000
2014-12-15,0.063000
2008-12-10,0.060000
2010-12-09,0.041000
2016-12-14,0.032000
1998-12-21,0.078000
2007-12-19,0.001000
1995-11-27,0.082000
1997-12-22,0.048000
2021-12-13,0.131000
1993-11-16,0.007000
2017-12-14,0.013000
2015-12-15,0.056000
1992-12-15,0.083000
1994-12-28,0.003000
1999-12-20,0.036000