f/overrides/event-backup/dfstx-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
1994-11-28,0.044000
1995-12-27,0.393000
2006-12-18,0.927000
2021-12-13,2.540000
2015-12-16,1.457000
1998-12-21,0.969000
1999-12-20,0.786000
2012-12-13,1.202000
1992-12-15,0.070000
2007-12-19,1.134000
2016-12-15,0.828000
2017-12-15,1.401000
1997-12-22,1.310000
2001-12-17,1.220000
2022-12-12,1.563000
2018-12-17,1.201000
1994-12-28,0.941000
1996-12-27,0.717000
2005-12-19,0.924000
2013-12-12,0.939000
2014-12-16,0.895000
2000-12-18,0.815000
2023-12-11,0.576000
2002-12-16,0.091000
2019-12-16,0.809000
1993-11-16,0.080000
1993-12-15,0.060000