f/overrides/event-backup/fagax-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
2009-12-11,0.131000
2015-12-04,6.636000
2025-12-26,8.585000
2000-01-07,0.090000
1998-12-11,2.130000
2017-12-26,4.968000
1998-01-02,0.210000
2002-06-28,0.034000
2004-12-10,0.180000
2018-12-26,7.896000
2001-12-14,0.260000
2016-01-08,0.605000
2005-12-09,0.089000
1999-12-10,5.540000
2000-12-15,3.930000
2002-12-13,0.170000
1996-12-06,0.720000
1999-01-08,0.030000
2002-07-31,0.034000
2016-12-27,7.382000
2019-12-27,3.641000
1997-12-12,2.990000
2020-12-29,7.730000
2002-10-31,0.032000
2003-12-12,0.080000
2021-12-28,14.619000
2001-01-05,0.030000