f/overrides/event-backup/fspcx-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
2015-04-10,0.597000
2017-04-07,0.448000
2024-04-12,2.723000
1991-06-14,0.200000
1993-04-02,0.050000
1997-12-12,2.100000
2013-04-12,1.364000
2016-12-16,0.824000
1987-12-14,0.140000
1995-04-07,0.040000
2010-04-09,0.010000
2010-12-10,0.295000
1989-06-13,0.020000
1995-12-15,0.750000
1996-12-13,1.080000
2006-12-08,4.540000
2014-04-11,3.722000
2025-12-26,2.521000
1988-12-15,0.090000
2006-04-13,0.500000
2019-12-20,2.105000
2020-04-08,2.672000
2021-04-09,3.069000
2026-04-10,1.649000
2008-04-11,0.010000
2008-12-12,0.550000
2011-12-09,0.358000
1991-12-20,0.060000
2010-12-30,0.040000
2015-12-18,1.509000
2021-12-17,2.747000
2024-12-26,5.138000
1992-06-12,1.500000
1993-12-10,1.920000
2009-12-11,0.320000
2017-12-15,9.502000
2019-04-05,2.360000
2023-12-21,3.753000
2007-04-13,0.060000
2007-12-14,4.800000
2009-12-30,0.015000
1989-12-11,0.130000
1999-12-10,2.950000
2012-04-13,0.037000
2020-12-18,2.470000
2022-12-16,0.551000
1996-04-12,0.400000
2002-04-12,0.900000
2004-04-08,0.590000
2004-12-10,0.100000
2000-12-15,0.770000
2001-04-12,0.330000
2016-04-15,1.356000
1997-02-07,1.000000
2010-04-30,0.029000
2018-12-14,8.435000
1997-04-11,1.440000
1998-12-11,0.900000
1999-04-09,3.650000
2011-04-06,0.030000
2018-04-06,9.360000
2002-12-13,0.740000
2005-12-09,1.550000
2013-12-20,3.862000
2023-04-14,2.750000
2025-04-11,0.499000
1992-12-11,0.240000
1998-04-09,3.080000
2003-12-12,1.370000
2005-04-15,0.310000
2012-12-21,1.452000
2014-12-22,3.576000