f/overrides/event-backup/ggeix-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
1995-07-26,0.040000
1995-12-21,0.035000
2019-06-07,0.169000
2019-12-18,1.198000
2022-06-06,0.107000
1994-06-24,0.040000
2008-12-18,0.645000
2011-12-16,0.061000
2018-12-18,1.865000
2020-12-21,0.304000
2023-12-20,0.076000
2024-06-10,0.077000
2006-12-21,0.145000
1996-06-17,0.061000
1999-12-07,0.077000
2001-06-20,0.020000
2002-12-23,0.268000
2003-12-23,0.121000
2010-12-17,0.368000
2012-11-12,0.437000
1995-06-16,0.035000
2015-06-12,0.097000
2021-12-21,3.118000
2022-12-21,1.668000
2014-12-16,0.277000
1997-12-11,0.123000
2001-12-17,0.063000
2016-12-16,0.159000
2017-12-18,0.067000
2018-12-19,0.083000
2021-06-07,0.004000
2024-12-19,1.696000
1997-06-19,0.067000
2025-06-09,0.070000
2015-12-17,0.139000
2017-06-09,0.104000
2023-06-12,0.017000
1999-06-16,0.050000
1998-12-03,0.119000
2005-12-21,0.095000
2009-12-18,0.279000
2016-06-10,0.069000
2025-12-18,2.958000
1998-06-16,0.052000
2018-06-08,0.062000
1996-12-19,0.057000