f/overrides/event-backup/flpsx-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
2002-09-06,0.570000
2011-12-09,0.142000
2013-12-13,1.038000
2014-09-05,2.402000
2024-12-06,1.831000
1992-12-11,0.180000
1997-09-05,1.260000
1999-09-03,0.990000
1991-09-06,0.430000
2001-12-14,0.190000
2010-12-10,0.090000
2003-09-05,0.010000
2018-09-14,3.738000
1998-12-11,0.230000
2009-09-11,0.203000
2019-12-13,0.414000
2025-12-05,1.177000
1990-09-07,0.400000
1993-12-03,0.670000
1995-12-15,0.670000
2012-09-07,1.834000
2012-12-14,0.935000
2020-09-11,3.162000
1994-09-02,1.620000
1994-12-02,0.520000
1998-09-04,1.910000
2014-12-12,0.553000
1992-09-04,0.610000
2000-12-15,0.760000
2001-09-07,1.510000
2013-09-06,2.263000
2016-12-09,0.922000
2023-09-08,6.377000
2025-09-12,4.300000
2000-09-08,2.830000
2004-12-17,0.500000
2007-09-07,2.150000
2019-09-13,3.657000
1995-09-08,0.800000
1999-12-10,0.250000
2022-09-09,3.400000
2005-09-09,1.670000
2023-12-08,1.683000
2024-09-13,4.786000
1991-12-13,0.320000
1996-09-06,1.580000
2004-09-03,1.650000
2020-12-11,2.257000
2022-12-09,0.966000
2006-12-15,0.480000
2007-12-14,1.600000
2017-09-15,4.091000
2018-12-07,2.100000
1996-12-13,0.320000
2005-12-16,1.210000
2011-09-09,2.343000
2015-12-11,0.388000
2021-09-10,4.550000
1997-12-12,0.600000
2008-09-12,4.260000
2015-09-11,1.841000
2021-12-10,1.961000
1993-09-03,1.110000
2010-09-08,0.068000
2016-09-16,1.477000
2017-12-08,0.766000
2003-12-19,0.450000
2006-09-08,3.630000
2010-04-30,0.033000
2008-12-12,0.024000