f/overrides/event-backup/acgix-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

212 lines
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Date,Dividends
2012-06-14,0.063000
1989-12-15,0.063000
2006-03-15,0.387000
2022-03-24,0.073000
1991-12-16,0.110000
2017-12-13,2.808000
2025-03-27,0.069000
2026-06-25,0.069000
1983-09-15,0.120000
1986-09-15,0.070000
2000-12-13,2.177000
2021-03-25,0.070000
2023-06-22,0.090000
2024-09-26,0.068000
1992-03-16,0.090000
1995-09-15,0.068000
2013-06-20,0.068000
2017-09-14,0.085000
2026-03-26,0.069000
1990-12-14,0.090000
2016-06-16,0.085000
2016-12-13,1.620000
1976-03-04,0.020000
1977-03-03,0.125000
1987-06-15,0.055000
1999-12-13,2.676000
2008-06-11,0.092000
1981-09-15,0.120000
1983-06-15,0.120000
1991-06-14,0.090000
2023-12-13,2.467000
1981-06-15,0.120000
1993-09-15,0.068000
2005-06-15,0.068000
2010-06-09,0.052000
2016-09-15,0.085000
1980-09-15,0.080000
1991-09-16,0.090000
2010-12-03,0.048000
2023-03-23,0.090000
1978-09-07,0.040000
1994-06-15,0.068000
1994-09-15,0.068000
2006-09-13,0.086000
2002-09-18,0.038000
2008-12-10,0.075000
2018-12-14,2.723000
1983-12-15,0.120000
1992-06-15,0.090000
1997-12-22,2.303000
2012-03-15,0.063000
2000-03-22,0.048000
2000-09-20,0.048000
1982-06-15,0.120000
1999-03-22,0.048000
2011-06-16,0.059000
1989-09-15,0.055000
1991-03-15,0.090000
1996-12-16,1.153000
2004-12-08,0.167000
2007-06-13,0.110000
1982-03-15,0.415000
1999-06-21,0.048000
2008-03-12,0.100000
2010-09-16,0.047000
2004-09-15,0.058000
1981-03-13,0.325000
1983-03-15,0.120000
1986-03-14,0.120000
1987-09-15,0.055000
2015-03-19,0.069000
1979-03-15,0.165000
1990-09-14,0.090000
2011-12-09,0.082000
2002-06-19,0.051000
2004-06-16,0.058000
2022-12-14,2.235000
2001-06-20,0.048000
2003-12-10,0.043000
1996-06-14,0.058000
1985-12-13,0.120000
1993-12-15,0.068000
2011-09-15,0.059000
1980-12-15,0.080000
2024-03-28,0.070000
1992-12-15,0.080000
2001-12-12,0.424000
2015-06-18,0.069000
2014-09-18,0.068000
1999-09-20,0.048000
1995-12-15,0.068000
2012-12-07,0.135000
2021-09-23,0.070000
1988-09-15,0.055000
1997-06-23,0.058000
2015-12-11,1.890000
1996-09-16,0.058000
2007-09-12,0.110000
2007-12-11,1.054000
2021-12-14,4.867000
1987-12-15,0.055000
1996-03-15,0.068000
2003-09-17,0.043000
2005-03-16,0.173000
1977-12-01,0.040000
2001-03-21,0.048000
2023-09-28,0.089000
1978-03-10,0.160000
1992-09-15,0.080000
2007-03-14,0.134000
2017-03-16,0.085000
1995-03-15,0.068000
2002-03-20,0.120000
2009-12-09,0.052000
2013-09-19,0.068000
1978-06-01,0.040000
1984-06-15,0.120000
1986-12-15,0.055000
1994-03-15,0.068000
2014-06-19,0.068000
1974-12-05,0.020000
1976-09-02,0.030000
1978-12-07,0.050000
2018-06-21,0.101000
2008-09-10,0.075000
2010-03-10,0.075000
2011-03-17,0.048000
1979-09-14,0.050000
1988-12-15,0.055000
2001-09-19,0.055000
2000-06-21,0.048000
2020-06-18,0.104000
1993-03-15,0.068000
2006-06-14,0.080000
2013-03-21,0.068000
2015-09-17,0.084000
2004-03-17,0.058000
2006-12-13,1.116000
2019-03-21,0.101000
2020-09-17,0.104000
1979-11-20,0.240000
1998-03-23,0.058000
2009-09-09,0.042000
2018-09-13,0.101000
2022-09-22,0.098000
2020-03-19,0.102000
1980-06-13,0.050000
1988-06-15,0.055000
2022-06-23,0.078000
1976-06-30,0.020000
1985-06-14,0.120000
1987-03-16,0.053000
1988-03-15,0.055000
2012-09-20,0.068000
2020-12-11,0.595000
1981-12-15,0.120000
1990-03-15,0.070000
1977-06-02,0.030000
1997-03-14,0.062000
1997-09-22,0.058000
1998-09-30,0.058000
2024-12-12,2.072000
2025-12-11,1.695000
2013-12-13,0.743000
2002-12-11,0.038000
1974-01-31,0.190000
1975-09-04,0.020000
2005-12-14,1.331000
2009-03-11,0.065000
2021-06-24,0.070000
1974-09-05,0.020000
1982-12-15,0.120000
2019-12-13,1.746000
1984-03-15,0.120000
1989-03-15,0.055000
2014-03-20,0.068000
1975-03-20,0.020000
1985-09-13,0.120000
2019-06-20,0.101000
2025-09-25,0.068000
1975-01-31,0.110000
1977-09-01,0.030000
1984-12-14,0.220000
1985-03-15,0.120000
1980-03-14,0.050000
1998-12-09,1.136000
2009-06-30,0.065000
2019-09-19,0.101000
2014-12-12,2.917000
1995-06-15,0.068000
2005-09-14,0.068000
2025-06-26,0.069000
2016-03-17,0.085000
2024-06-27,0.070000
1986-06-13,0.075000
1993-06-15,0.068000
1998-06-22,0.058000
1974-06-06,0.020000
1976-02-02,0.075000
1994-12-15,0.090000
1975-12-04,0.020000
1979-06-15,0.050000
1982-09-15,0.120000
1984-09-14,0.120000
1990-06-15,0.090000
1975-06-05,0.020000
1976-12-02,0.030000
1989-06-15,0.055000
2017-06-15,0.085000
2018-03-22,0.085000