f/overrides/event-backup/etgix-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
2021-12-09,4.003000
2023-12-07,1.718000
2006-12-27,0.549000
2008-03-11,1.183000
2018-08-09,0.376000
2007-12-24,3.188000
2014-12-29,0.510000
2016-12-28,0.148000
2017-07-26,0.194000
2017-12-27,1.029000
2020-08-18,0.096000
2025-12-04,4.953000
2006-03-28,0.015000
2007-03-13,0.329000
2011-03-15,0.037000
2015-05-21,0.205000
2019-08-08,0.956000
2022-12-08,6.669000
2024-12-05,1.629000
2005-12-27,0.518000
2010-04-30,0.031000