f/overrides/event-backup/fdgfx-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
2008-12-12,0.171000
2017-09-15,2.068000
2017-12-08,3.573000
2026-07-10,0.163000
2011-12-09,0.060000
2020-09-11,0.365000
1998-09-04,1.990000
2020-12-18,0.220000
2004-09-03,0.120000
2016-09-16,0.273000
2018-09-14,5.078000
2022-12-22,0.295000
2000-09-08,1.750000
2000-12-15,0.830000
2022-04-01,0.049000
2024-04-05,0.060000
2025-04-04,0.031000
1999-12-10,0.140000
2010-09-08,0.129000
2013-12-13,0.962000
2019-12-20,0.467000
2021-12-17,0.758000
2022-07-01,0.134000
2002-12-13,0.090000
2005-12-09,0.430000
2009-12-11,0.067000
2013-09-06,2.634000
2021-09-10,2.105000
1997-09-05,1.410000
2001-09-07,0.410000
2007-09-07,1.920000
2025-12-26,1.099000
2001-12-14,0.070000
2014-09-12,5.015000
2014-12-12,0.990000
2015-12-11,0.370000
2023-04-05,0.058000
2024-07-05,0.116000
2002-09-06,0.130000
2011-09-09,0.077000
2018-12-07,0.726000
2023-07-07,0.122000
2025-10-03,0.250000
1996-09-06,0.410000
2003-09-05,0.130000
2003-12-12,0.090000
2006-09-08,0.660000
2024-10-04,0.130000
2025-07-11,0.100000
2005-09-09,0.260000
2006-12-08,0.610000
2010-12-10,0.097000
2025-08-07,2.500000
2007-12-14,0.760000
2009-09-11,0.098000
2015-09-11,2.453000
2016-12-09,0.235000
2023-09-08,0.504000
1998-12-11,0.330000
2008-09-12,1.208000
2012-12-14,0.588000
2019-09-13,1.033000
1995-09-08,0.330000
1995-12-08,0.830000
1996-12-13,0.050000
1997-12-26,0.930000
1999-09-03,2.230000
2005-04-22,0.034000
2023-12-21,0.302000
2024-12-26,0.927000
2026-04-01,0.104000
2004-12-10,0.270000
2012-09-07,0.208000
2022-09-09,2.706000
2022-10-07,0.146000
2023-10-06,0.162000
2024-09-13,2.515000