f/overrides/event-backup/kmb-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

169 lines
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Date,Dividends
2016-06-08,0.920000
2024-03-07,1.220000
1985-06-03,0.069511
1992-03-02,0.196548
1997-09-03,0.230105
2001-09-05,0.268456
2009-12-02,0.575264
2011-09-07,0.671141
1989-09-01,0.155801
1990-03-05,0.162991
2000-03-08,0.258869
2003-06-04,0.325983
2019-06-06,1.030000
2019-09-05,1.030000
1985-12-02,0.069511
2002-06-05,0.287632
2007-06-06,0.508150
2008-12-03,0.556088
2010-03-03,0.632790
2021-12-09,1.140000
2024-09-06,1.220000
1985-08-30,0.069511
2008-09-03,0.556088
2013-09-04,0.776606
2013-12-04,0.776606
2018-12-06,1.000000
2020-12-03,1.070000
2026-03-06,1.280000
1992-06-01,0.196548
1993-09-03,0.206136
1999-06-02,0.249281
2015-09-02,0.880000
1989-03-06,0.155801
2009-03-04,0.575264
2016-12-07,0.920000
2004-12-01,1.025887
2021-06-03,1.140000
2022-03-03,1.160000
2022-12-08,1.160000
1987-03-02,0.086290
1988-09-02,0.095877
2003-12-03,0.325983
2010-06-02,0.632790
2021-03-04,1.140000
2022-06-09,1.160000
1996-06-05,0.220518
1998-12-02,0.239693
2014-09-03,0.805369
1986-03-03,0.074305
2013-06-05,0.776606
2024-12-06,1.220000
2011-03-02,0.671141
1986-12-01,0.074305
1988-02-29,0.095877
1994-02-28,0.210930
2000-09-06,0.258869
2005-03-02,0.431448
2005-09-07,0.431448
2017-03-08,0.970000
2018-03-08,1.000000
1989-12-04,0.155801
1992-08-31,0.196548
2009-09-02,0.575264
2011-06-08,0.671141
2012-09-05,0.709492
2016-03-02,0.920000
1998-09-02,0.239693
1999-12-08,0.249281
2008-06-04,0.556088
2023-09-07,1.180000
1993-12-06,0.206136
1997-06-04,0.230105
2007-12-05,0.508150
2009-06-03,0.575264
2010-09-08,0.632790
1996-03-06,0.220518
2014-12-03,0.840000
2019-12-05,1.030000
2024-06-07,1.220000
1995-09-06,0.215724
1996-12-04,0.220518
2003-03-05,0.325983
2004-12-08,0.383509
2006-12-06,0.469799
2015-12-02,0.880000
2025-06-06,1.260000
1986-06-02,0.074305
1987-06-01,0.086290
2011-12-07,0.671141
2013-03-06,0.776606
2021-09-09,1.140000
1990-06-04,0.162991
1990-08-31,0.162991
1992-11-30,0.196548
2001-12-05,0.268456
2004-06-02,0.383509
1993-05-28,0.207095
2012-06-06,0.709492
1985-03-04,0.069511
2010-12-08,0.632790
2018-09-06,1.000000
1991-08-30,0.177373
2004-09-08,0.383509
2017-06-07,0.970000
2023-03-09,1.180000
2023-12-07,1.180000
2006-06-07,0.469799
2022-09-08,1.160000
1995-12-06,0.215724
1997-03-05,0.230105
2000-06-07,0.258869
2000-12-06,0.258869
2001-03-07,0.268456
2005-12-07,0.431448
2023-06-08,1.180000
2026-06-05,1.280000
2002-12-04,0.287632
2012-12-05,0.709492
1987-11-30,0.086290
1988-06-06,0.095877
1991-06-03,0.177373
1993-03-01,0.196548
1994-12-05,0.210930
1999-03-03,0.249281
2017-12-07,0.970000
2020-09-03,1.070000
2025-03-07,1.260000
1987-08-31,0.086290
1996-09-04,0.220518
1999-09-08,0.249281
2004-03-03,0.383509
2007-09-05,0.508150
2025-12-05,1.260000
1994-06-06,0.210930
2001-06-06,0.268456
2014-03-05,0.805369
2018-06-07,1.000000
2017-09-07,0.970000
2020-06-04,1.070000
1991-12-02,0.196548
1995-03-06,0.215724
1998-03-04,0.239693
2005-06-08,0.431448
2006-03-08,0.469799
2016-09-07,0.920000
1989-06-05,0.155801
1990-12-03,0.162991
1994-09-02,0.210930
2015-06-03,0.880000
2020-03-05,1.070000
2019-03-07,1.030000
1988-12-05,0.095877
1995-06-06,0.215724
1997-12-03,0.230105
2003-09-03,0.325983
2007-03-07,0.508150
2012-03-07,0.709492
2002-03-06,0.287632
2025-09-05,1.260000
1991-03-04,0.177373
2002-09-04,0.287632
2008-03-05,0.556088
1986-08-29,0.074305
1998-06-03,0.239693
2006-09-06,0.469799
2014-06-04,0.805369
2015-03-04,0.880000