f/overrides/event-backup/ancfx-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

188 lines
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Plaintext

Date,Dividends
2022-12-16,1.287000
2023-06-14,0.821000
1981-05-29,0.090000
1985-02-19,0.100000
1993-02-19,0.150000
1995-05-12,0.100000
1998-05-22,0.100000
2020-09-16,0.170000
2021-12-17,5.704000
2026-03-18,0.170000
1983-02-25,0.140000
1983-05-27,0.100000
1990-05-25,0.100000
1996-05-17,0.100000
2003-05-16,0.100000
2008-12-16,0.220000
2013-09-12,0.125000
2001-12-14,0.100000
2021-06-16,2.290000
2021-09-15,0.170000
1980-05-30,0.090000
1985-11-15,0.100000
1996-08-16,0.100000
2001-05-18,0.100000
2005-12-28,0.290000
2008-05-23,0.120000
2010-09-15,0.120000
2025-12-17,5.445000
1994-05-20,0.100000
1997-08-15,0.100000
1998-12-23,2.580000
2003-08-15,0.100000
1987-08-19,0.100000
1992-11-20,1.260000
2005-08-19,0.100000
2004-02-20,0.100000
2015-06-17,0.150000
2017-12-20,3.698000
1988-08-12,0.100000
1992-02-21,0.200000
1993-11-19,2.110000
1996-02-23,0.310000
2022-06-15,1.374000
2022-09-14,0.170000
1985-05-21,0.100000
1995-02-17,0.300000
1999-02-19,0.700000
2010-06-09,0.120000
2011-03-04,0.120000
2015-12-22,2.022000
2020-03-18,0.170000
2023-03-15,0.170000
1982-05-28,0.100000
2000-08-18,0.100000
2000-12-15,1.945000
2007-02-16,0.182000
2024-09-18,0.170000
1986-02-18,0.100000
2009-05-26,0.120000
2015-03-13,0.762000
2016-12-21,1.701000
2014-09-17,0.145000
2018-09-14,0.165000
2025-03-12,0.170000
1986-05-19,0.100000
1989-08-18,0.100000
1993-08-13,0.100000
2002-08-16,0.100000
2021-03-17,0.170000
2024-12-18,6.173000
1982-11-26,0.100000
1984-02-10,0.100000
1993-05-21,0.100000
2012-12-19,0.275000
1998-08-14,0.100000
1999-12-16,2.285000
2006-05-26,0.110000
2007-12-24,2.600000
2014-06-12,0.135000
1984-11-19,0.100000
1999-08-13,0.100000
2007-05-18,0.120000
2009-02-20,0.120000
2019-12-20,3.491000
1990-11-16,0.190000
1995-12-01,0.580000
2003-02-21,0.100000
2014-12-22,3.614000
1980-02-29,0.090000
1989-02-10,0.100000
1990-08-17,0.100000
2002-05-15,0.100000
2003-12-12,0.100000
2014-03-14,0.630000
1980-11-28,0.140000
1983-08-26,0.100000
1995-08-11,0.100000
1999-05-21,0.100000
2004-12-10,0.260000
2011-09-14,0.125000
2012-03-16,0.125000
2026-06-16,1.737000
1983-11-25,0.100000
1986-08-15,0.100000
1988-11-18,0.170000
2002-02-22,0.100000
2006-08-18,0.120000
2008-08-15,0.120000
2012-09-12,0.125000
2023-12-15,2.985000
1988-05-20,0.100000
1989-11-17,0.320000
1992-08-21,0.100000
2004-08-13,0.100000
2024-06-12,0.668000
2005-02-18,0.100000
2005-05-27,0.100000
2010-03-05,0.120000
2018-12-21,4.722000
2013-03-15,0.125000
2019-06-14,0.727000
2020-06-17,0.950000
1990-02-16,0.100000
1991-11-29,0.660000
2006-02-17,0.110000
2012-06-13,0.125000
2018-06-15,0.692000
2024-03-13,0.170000
1982-02-26,0.170000
1987-11-20,0.100000
2004-05-21,0.100000
2011-12-15,0.250000
2002-12-13,0.195000
2017-06-14,0.799000
2013-12-18,1.190000
2020-12-18,0.515000
1986-11-21,0.100000
1987-02-13,0.100000
1991-02-15,0.100000
1997-05-23,0.100000
1981-11-27,0.150000
1987-05-22,0.100000
1994-11-18,0.510000
2019-09-13,0.170000
2016-09-16,0.155000
1984-05-22,0.100000
1991-05-24,0.100000
2007-08-17,0.120000
2008-02-15,0.382000
1982-08-27,0.100000
1998-02-13,0.210000
2001-08-17,0.100000
2006-12-27,1.790000
1981-08-28,0.100000
2010-12-15,0.210000
2019-03-15,0.165000
2023-09-13,0.170000
1992-05-22,0.100000
1994-02-18,0.180000
2011-06-08,0.120000
2025-09-17,0.170000
2000-05-19,0.100000
2001-02-23,0.475000
2009-08-14,0.120000
2016-06-15,0.560000
1981-02-27,0.090000
1985-08-19,0.100000
1997-02-21,0.450000
1997-11-28,2.900000
2018-03-16,0.160000
1994-08-12,0.100000
2000-02-18,0.610000
2013-06-12,0.125000
2016-03-16,0.150000
1980-08-29,0.090000
1988-02-12,0.100000
1989-05-26,0.100000
1991-08-16,0.100000
2017-03-15,0.155000
2017-09-15,0.160000
2022-03-16,0.170000
2025-06-11,2.062000
1984-08-20,0.100000
1996-11-29,1.650000
2009-12-15,0.120000
2015-09-16,0.150000