f/overrides/event-backup/disvx-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
2007-12-19,1.573000
2010-12-09,0.290000
2015-12-15,0.281000
2017-12-14,0.738000
2018-12-17,0.617000
2019-12-16,0.291000
2024-12-10,0.184000
1998-12-21,0.162000
2003-12-22,0.086000
2006-12-18,1.248000
2008-12-10,0.059000
2023-12-11,0.026000
1996-12-27,0.296000
1995-12-27,0.001000
2004-12-20,0.402000
2011-12-12,0.277000
2012-12-12,0.214000
2013-12-11,0.300000
2016-12-14,0.618000
2021-12-13,0.161000
1995-11-27,0.008000
2000-12-18,0.264000
2005-12-19,0.676000
2014-12-15,0.345000
1997-12-22,0.278000