f/overrides/event-backup/frbsx-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
1992-12-15,0.190000
1995-09-15,0.070000
1997-06-13,0.120000
1999-06-15,0.086000
2022-12-20,0.327000
1994-09-15,0.050000
1998-06-15,0.088000
2007-12-17,6.380000
2025-12-22,1.626000
1991-09-13,0.100000
1995-12-22,0.132000
1999-03-15,0.060000
2002-12-13,0.498000
1991-06-14,0.080000
1992-03-13,0.090000
1998-03-16,0.125000
2001-12-14,1.278000
2021-12-15,4.973000
2000-12-15,0.755000
2002-03-15,0.052000
2008-12-15,1.749000
2019-12-16,2.682000
1998-12-15,1.331000
2012-12-17,2.817000
2013-12-16,5.951000
2022-12-15,1.075000
1993-12-22,0.106000
2001-03-15,0.059000
2002-06-19,0.041000
2017-12-15,3.169000
1991-03-15,0.150000
1991-12-20,0.260000
1993-06-15,0.080000
1995-03-15,0.050000
1995-06-15,0.090000
2004-12-15,1.340000
1992-09-15,0.090000
1994-06-15,0.050000
1997-09-15,0.120000
1998-09-15,0.153000
2000-03-15,0.040000
1990-12-14,0.230000
1997-03-14,0.090000
2003-12-15,0.474000
2014-12-15,7.756000
2016-12-15,2.492000
2018-12-17,4.979000
2001-09-17,0.447000
2002-07-18,0.041000
1990-09-14,0.180000
1993-09-15,0.080000
1996-03-15,0.070000
1996-06-14,0.090000
2000-09-15,0.090000
2001-06-15,0.078000
2006-12-15,5.162000
2015-12-15,6.052000
1993-03-15,0.080000
2010-12-15,4.712000
2020-12-15,1.187000
1992-06-15,0.090000
1997-12-19,1.942000
1999-09-15,0.114000
2000-06-15,0.082000
2002-10-18,0.040000
2011-12-15,5.167000
2024-12-20,2.457000
1994-12-23,0.060000
1996-09-13,0.150000
1996-12-19,2.483000
1999-12-15,0.376000
2005-12-15,0.465000
2023-12-20,0.788000
1994-03-15,0.050000
2009-12-15,0.425000