f/overrides/event-backup/aceix-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

227 lines
4.4 KiB
Plaintext

Date,Dividends
2005-07-29,0.022000
2008-11-28,0.027000
2004-02-27,0.021000
2007-03-14,0.040000
1986-09-15,0.075000
2002-03-20,0.109000
2006-12-13,0.280000
2009-04-30,0.020000
2013-09-19,0.045000
2018-06-21,0.039000
2022-09-22,0.044000
1986-03-14,0.075000
1997-03-31,0.149000
2006-03-15,0.137000
2006-08-31,0.029000
1991-06-14,0.050000
2003-11-28,0.021000
2009-11-30,0.014000
2003-09-30,0.022000
2009-10-30,0.015000
2011-06-16,0.039000
2020-03-19,0.039000
2021-09-23,0.033000
1993-09-15,0.042000
2006-10-31,0.031000
2019-12-13,0.529000
2004-09-30,0.021000
2008-05-30,0.028000
2009-01-30,0.027000
2003-08-29,0.021000
2004-12-08,0.013000
2006-02-28,0.024000
2002-12-11,0.042000
2004-11-30,0.021000
2025-03-27,0.049000
2006-05-31,0.028000
2021-03-25,0.033000
2002-06-19,0.042000
2004-10-29,0.021000
2006-04-28,0.026000
1991-09-16,0.050000
1997-06-23,0.035000
2004-01-30,0.021000
2008-04-30,0.029000
1986-12-15,0.075000
1993-12-15,0.042000
2003-07-31,0.022000
2007-07-31,0.031000
2007-12-31,0.032000
2008-01-31,0.029000
2008-10-31,0.028000
2009-12-31,0.012000
1987-12-14,0.075000
1989-09-15,0.075000
2025-09-25,0.049000
2022-12-14,0.542000
2024-03-28,0.047000
2012-12-07,0.074000
1994-12-15,0.060000
2005-12-14,0.308000
2005-09-01,0.024000
2007-03-30,0.031000
2008-08-29,0.028000
2010-03-10,0.040000
2002-09-18,0.042000
2004-12-31,0.021000
2014-03-20,0.045000
2000-09-20,0.045000
2012-09-20,0.045000
2023-06-22,0.047000
2005-03-31,0.021000
2005-10-31,0.024000
2017-09-14,0.039000
2005-06-30,0.022000
2015-06-18,0.042000
2016-12-13,0.353000
1989-03-14,0.075000
2016-09-15,0.041000
2015-09-17,0.042000
2022-06-23,0.033000
2026-03-26,0.049000
2007-01-31,0.031000
2009-06-30,0.018000
2010-06-09,0.035000
1992-03-16,0.050000
2004-06-30,0.022000
2023-09-28,0.047000
2025-06-26,0.049000
1996-06-14,0.035000
2009-05-29,0.019000
2001-09-19,0.055000
2004-08-31,0.022000
2006-06-30,0.026000
2014-12-12,1.102000
1992-06-15,0.050000
1998-06-22,0.035000
2011-03-17,0.039000
2019-06-20,0.039000
2021-06-24,0.033000
2026-06-25,0.049000
1988-12-15,0.075000
1998-03-23,0.112000
2007-02-28,0.028000
2010-09-16,0.035000
1987-09-14,0.075000
1992-12-15,0.045000
2005-01-31,0.020000
2020-09-17,0.039000
1987-03-13,0.075000
2008-09-30,0.027000
1993-06-15,0.042000
2014-09-18,0.045000
2023-12-13,0.555000
2004-07-30,0.023000
2008-12-31,0.028000
2013-06-20,0.045000
2018-03-22,0.039000
2020-06-18,0.039000
2011-09-15,0.039000
2006-12-29,0.031000
2008-03-12,0.007000
2013-03-21,0.045000
1991-12-16,0.065000
2004-05-28,0.022000
2012-06-14,0.039000
2004-04-30,0.022000
2007-06-29,0.030000
1988-06-15,0.075000
2005-09-30,0.024000
2003-10-31,0.021000
2009-08-31,0.016000
2008-02-29,0.026000
2008-06-30,0.028000
2009-09-30,0.015000
1993-03-15,0.042000
1995-09-15,0.042000
2025-12-11,0.607000
2003-05-30,0.023000
2005-04-29,0.021000
1995-12-15,0.062000
2007-10-31,0.033000
2007-11-30,0.031000
2010-12-03,0.042000
1986-06-13,0.075000
1988-09-15,0.075000
1996-09-30,0.035000
2019-09-19,0.039000
2012-03-15,0.039000
2005-12-30,0.025000
2009-07-31,0.018000
2000-06-21,0.045000
2006-07-31,0.028000
2011-12-09,0.049000
2020-12-11,0.205000
2022-03-24,0.033000
1990-06-15,0.060000
1998-09-21,0.035000
2016-03-17,0.041000
2024-12-12,0.718000
1989-06-15,0.075000
1999-06-21,0.035000
2008-03-31,0.030000
2009-03-31,0.025000
1988-03-15,0.075000
1990-03-14,0.065000
2024-09-26,0.049000
2015-12-11,0.373000
2017-12-13,0.622000
2017-06-15,0.039000
2023-03-23,0.047000
1994-09-15,0.042000
2007-09-28,0.031000
2004-03-31,0.022000
2015-03-19,0.042000
2018-09-13,0.039000
1994-03-15,0.042000
2001-03-21,0.210000
2009-02-27,0.022000
2006-09-29,0.029000
2007-05-31,0.031000
1997-09-22,0.035000
2007-04-30,0.030000
2007-12-11,0.319000
1995-03-15,0.042000
2001-12-12,0.092000
2000-12-13,0.725000
2019-03-21,0.039000
1996-12-31,0.355000
1999-12-13,0.741000
2005-02-28,0.019000
1990-12-14,0.050000
1994-06-15,0.042000
2000-03-22,0.242000
2003-06-30,0.021000
2016-06-16,0.041000
2017-03-16,0.039000
2018-12-14,0.696000
1997-12-22,0.865000
1999-09-20,0.035000
2006-11-30,0.030000
2021-12-14,1.459000
1991-03-15,0.050000
1999-03-22,0.117000
1996-06-28,0.035000
1992-09-15,0.050000
2005-05-31,0.021000
2006-03-31,0.027000
2014-06-19,0.045000
1989-12-15,0.070000
2005-03-16,0.115000
2005-11-30,0.024000
2013-12-13,0.655000
2003-04-30,0.025000
2006-01-31,0.025000
1990-09-14,0.060000
1996-03-15,0.042000
1995-06-15,0.042000
2003-03-31,0.026000
2003-12-31,0.022000
2007-08-31,0.031000
2008-07-31,0.028000
2024-06-27,0.049000
1987-06-12,0.075000
1998-12-09,0.444000
2001-06-20,0.055000