f/overrides/event-backup/kf-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
2007-12-27,14.700000
2017-12-22,4.025000
1988-12-23,1.820000
2006-12-27,71.200000
1996-09-12,6.000000
1997-09-12,0.600000
2004-12-29,6.500000
2020-12-24,0.526000
1987-07-28,4.830000
1988-12-28,1.700000
2016-12-22,0.328000
1990-08-27,14.500000
2002-12-27,6.750000
1991-08-26,2.700000
2003-12-29,3.000000
2018-12-21,5.226000
1988-01-06,4.876667
1988-09-14,0.656667
2011-12-28,5.450000
2015-12-23,4.350000
2001-06-13,0.150000
2010-12-29,0.300000
2009-03-17,0.008000
2022-12-23,3.319000
2024-12-27,0.454000
2025-12-23,1.382000
2001-03-01,14.060000
2007-11-29,159.400000
1995-12-27,0.550000
2001-12-27,1.200000
2005-12-28,8.500000
2019-12-20,0.071000
1989-07-28,14.650000
1989-12-28,4.900000
1992-09-01,2.340000
1993-12-27,0.100000
1994-09-12,0.100000
2000-12-27,1.700000
2008-12-29,90.300000
2021-12-23,9.110000
1990-12-26,7.500000
1991-12-18,1.300000