f/overrides/event-backup/brw-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

416 lines
8.1 KiB
Plaintext

Date,Dividends
2001-03-08,0.123016
2007-07-06,0.093254
2016-10-05,0.053571
2018-10-09,0.049603
2018-12-07,0.051587
1996-07-03,0.130952
2004-09-08,0.071429
2015-04-08,0.057540
2016-09-08,0.053571
2021-06-09,0.013889
2003-12-08,0.069444
2010-03-08,0.049603
2010-07-08,0.055556
2012-09-06,0.071429
2015-12-29,0.053571
2017-09-08,0.047619
2024-07-09,0.084325
2025-10-09,0.085000
2001-12-27,0.083333
2001-07-06,0.107143
2004-07-08,0.069444
2025-06-10,0.084325
2000-03-08,0.132937
2003-11-06,0.069444
2008-08-07,0.063492
2011-10-05,0.051587
2012-06-07,0.069444
2012-07-06,0.069444
2016-03-08,0.051587
2016-11-08,0.053571
2000-12-07,0.138889
2024-08-09,0.084325
2022-02-08,0.095238
1995-12-27,0.140873
2013-05-08,0.073413
2021-09-09,0.065476
2022-06-07,0.091270
1995-05-02,0.142857
1998-10-08,0.136905
2001-02-08,0.138889
2006-09-07,0.095238
2012-02-08,0.059524
2016-10-06,0.053571
2018-02-09,0.045635
2018-11-08,0.053571
1992-05-05,0.101190
2025-04-09,0.084325
2001-08-08,0.107143
2001-12-06,0.085317
2010-04-08,0.051587
2019-04-09,0.055556
2020-07-09,0.029762
1999-07-08,0.128968
1996-11-07,0.138889
2006-02-08,0.083333
2022-01-07,0.095238
2025-11-10,0.085000
1995-04-04,0.146825
2007-06-07,0.095238
2008-04-08,0.083333
2013-07-08,0.071429
2017-08-08,0.049603
2022-03-08,0.095238
2023-08-08,0.084325
1994-12-23,0.142857
2015-11-06,0.055556
2022-08-08,0.088294
2026-06-09,0.085000
1997-07-08,0.136905
1999-02-08,0.132937
2001-06-07,0.115079
2003-07-08,0.067460
2008-12-29,0.067460
2018-09-07,0.049603
2020-11-09,0.027778
2024-02-08,0.084325
1995-07-06,0.142857
2025-12-09,0.085000
2026-05-11,0.085000
2024-04-08,0.084325
2000-10-05,0.138889
2001-10-05,0.093254
2014-04-08,0.063492
2019-08-09,0.053571
2022-09-08,0.090278
1995-03-06,0.126984
1997-08-07,0.138889
1999-08-06,0.132937
1999-11-08,0.134921
2007-12-27,0.095238
2011-07-07,0.049603
2013-03-07,0.075397
2021-01-08,0.027778
1992-03-31,0.109127
2023-09-08,0.084325
2022-10-07,0.087302
2009-07-08,0.043651
2009-09-08,0.063492
2004-06-08,0.069444
1997-06-05,0.136905
1999-06-08,0.130952
2002-06-06,0.073413
2004-12-29,0.071429
2009-03-06,0.047619
2019-10-09,0.049603
2021-07-09,0.065476
1992-12-04,0.097222
2022-05-23,0.046627
1996-09-06,0.138889
1997-09-04,0.136905
1998-07-08,0.134921
2001-04-06,0.128968
1994-04-05,0.107143
2002-04-08,0.077381
2004-10-06,0.069444
2006-07-06,0.091270
2014-12-29,0.057540
1992-09-03,0.099206
2008-05-08,0.067460
2009-06-08,0.045635
2017-04-06,0.053571
2017-10-06,0.045635
2022-11-08,0.085317
2024-09-10,0.084325
1994-12-06,0.126984
1998-12-08,0.132937
2005-06-08,0.075397
2012-12-27,0.075397
2014-07-08,0.055556
2020-09-09,0.027778
2023-01-09,0.086310
2026-01-12,0.085000
1992-08-04,0.099206
1999-04-08,0.130952
1999-05-06,0.125000
2001-09-06,0.103175
2005-04-07,0.073413
2017-07-06,0.049603
2017-12-08,0.043651
2018-06-08,0.047619
1993-10-04,0.097222
2023-12-28,0.197421
2021-05-07,0.013889
2000-12-27,0.144841
2002-12-27,0.077381
2003-04-08,0.071429
2008-10-08,0.059524
2020-12-09,0.027778
2022-04-08,0.093254
1999-09-08,0.132937
1998-09-08,0.136905
1999-10-06,0.128968
2000-11-08,0.140873
2003-09-08,0.069444
2007-05-08,0.093254
2009-08-06,0.063492
2012-11-08,0.073413
1996-05-08,0.128968
2019-11-08,0.049603
2020-08-07,0.029762
2023-07-10,0.084325
2014-06-06,0.057540
1994-08-04,0.121032
1996-10-08,0.134921
2005-08-08,0.077381
2010-12-29,0.051587
2016-05-06,0.051587
2023-06-08,0.085317
2025-01-10,0.084325
1993-11-02,0.099206
2000-05-08,0.148810
2006-05-08,0.089286
2007-11-07,0.095238
2017-02-08,0.053571
2020-02-07,0.045635
1995-09-07,0.144841
2005-09-08,0.077381
2015-12-08,0.051587
2019-03-08,0.051587
1998-12-29,0.134921
2002-08-08,0.081349
2007-10-05,0.093254
2012-12-06,0.073413
2013-02-07,0.075397
2015-07-08,0.055556
2002-07-08,0.069444
2008-02-07,0.091270
2013-12-27,0.063492
2015-02-06,0.057540
2019-12-09,0.045635
2003-12-29,0.071429
2000-04-06,0.144841
2012-10-05,0.071429
2016-02-08,0.053571
2017-11-09,0.043651
1998-11-06,0.132937
1994-10-04,0.123016
1996-02-08,0.140873
2005-05-06,0.073413
2006-08-08,0.095238
2007-03-08,0.089286
2013-06-06,0.073413
2013-09-06,0.065476
1993-12-27,0.099206
2023-10-06,0.084325
2026-04-13,0.085000
2006-12-27,0.095238
2019-09-09,0.051587
1993-07-06,0.099206
2004-04-07,0.069444
2009-05-07,0.045635
2009-10-08,0.063492
2018-12-28,0.053571
2024-10-09,0.084325
2004-02-06,0.071429
1994-02-04,0.099206
1994-07-05,0.117063
1996-12-27,0.138889
1997-02-06,0.138889
1997-05-08,0.134921
1997-10-08,0.134921
2002-02-07,0.081349
1992-07-06,0.101190
2003-06-06,0.071429
2012-03-08,0.059524
2002-10-08,0.077381
2003-03-06,0.065476
2018-05-09,0.047619
2024-11-08,0.084325
2003-02-06,0.073413
2003-05-08,0.069444
2010-02-08,0.049603
2011-08-08,0.051587
2014-10-08,0.055556
2019-02-08,0.053571
2026-02-10,0.085000
1996-06-06,0.136905
2014-02-06,0.063492
2018-03-09,0.041667
2019-07-09,0.053571
2019-12-30,0.045635
1993-03-02,0.089286
2000-02-08,0.136905
2005-12-08,0.077381
2006-06-08,0.091270
2008-06-06,0.067460
2010-10-07,0.053571
2022-12-09,0.086310
2025-05-09,0.084325
1998-08-06,0.138889
2000-09-07,0.144841
2002-12-06,0.077381
2010-09-08,0.055556
2020-05-08,0.033730
1993-12-06,0.099206
2008-07-08,0.063492
2009-04-08,0.047619
2010-06-08,0.055556
2010-12-08,0.051587
1992-11-03,0.115079
2000-07-06,0.142857
2002-09-06,0.077381
2007-02-08,0.095238
2012-04-05,0.065476
2016-12-29,0.053571
2017-05-08,0.051587
2000-06-08,0.148810
2006-10-05,0.093254
2013-04-08,0.075397
2014-03-06,0.057540
2023-02-08,0.088294
2026-07-09,0.085000
1995-12-07,0.142857
2003-08-07,0.071429
2007-04-05,0.095238
2016-06-08,0.053571
2019-05-09,0.053571
2001-05-08,0.119048
1995-10-04,0.140873
1996-04-03,0.134921
2002-03-07,0.077381
2005-11-08,0.077381
1993-09-03,0.099206
2005-03-08,0.067460
2005-07-07,0.075397
2008-03-06,0.087302
2009-02-06,0.055556
2018-07-09,0.047619
2018-08-09,0.049603
2021-12-09,0.065476
1994-05-03,0.107143
2025-07-09,0.084325
1998-03-06,0.123016
2011-03-08,0.047619
2011-09-08,0.051587
1997-11-06,0.136905
1999-12-08,0.125000
2001-11-07,0.093254
2005-02-08,0.071429
2007-08-08,0.095238
2008-09-08,0.063492
2015-06-08,0.057540
2023-05-08,0.087302
1996-12-05,0.138889
2025-02-11,0.084325
1995-06-08,0.146825
1996-03-07,0.126984
1998-02-06,0.136905
1998-04-08,0.138889
2011-11-08,0.055556
2016-08-08,0.053571
2023-11-08,0.084325
1993-05-04,0.097222
2003-10-08,0.067460
2013-11-07,0.063492
2014-08-07,0.055556
2017-06-08,0.051587
2022-07-08,0.089286
1998-05-07,0.134921
2018-04-09,0.047619
2013-12-06,0.063492
2002-11-07,0.077381
2009-12-29,0.049603
2011-02-08,0.049603
2012-05-08,0.065476
2014-11-06,0.057540
2017-12-28,0.043651
2021-02-09,0.023810
2002-05-08,0.073413
2025-03-11,0.084325
2024-12-10,0.084325
1997-03-06,0.125000
2005-10-05,0.075397
2023-03-08,0.088294
2024-06-11,0.084325
1995-08-09,0.144841
2011-04-07,0.051587
2015-09-08,0.055556
2016-04-07,0.053571
2016-07-07,0.053571
2021-03-09,0.021825
2024-03-08,0.084325
2007-09-06,0.095238
2009-12-08,0.049603
2012-08-08,0.069444
1999-03-08,0.117063
1993-02-02,0.097222
1997-12-29,0.196429
1998-06-08,0.140873
2004-03-08,0.067460
2004-05-06,0.067460
2010-05-06,0.051587
2014-12-08,0.057540
1992-06-03,0.101190
2026-08-11,0.085000
2015-05-07,0.055556
1997-04-08,0.136905
2004-08-06,0.071429
2013-10-08,0.063492
2014-09-08,0.055556
2017-03-08,0.051587
2025-08-11,0.084325
1995-11-08,0.142857
1993-08-03,0.097222
1997-12-04,0.134921
2004-12-08,0.071429
2010-11-08,0.051587
2015-10-07,0.055556
2019-06-07,0.055556
1993-04-05,0.099206
1995-02-06,0.138889
2008-11-06,0.067460
2008-12-08,0.067460
2011-05-06,0.049603
2011-06-08,0.051587
2015-03-06,0.053571
2021-08-09,0.065476
1994-06-06,0.117063
2025-09-10,0.084325
2006-04-06,0.087302
2009-11-06,0.055556
1993-06-02,0.099206
2006-12-07,0.093254
1999-12-28,0.132937
2000-08-08,0.144841
2004-11-08,0.073413
2005-12-28,0.079365
2010-08-06,0.055556
2014-05-08,0.059524
2016-12-08,0.053571
1994-09-06,0.123016
2020-06-09,0.029762
2021-11-09,0.065476
2023-04-10,0.086310
2026-03-10,0.085000
2020-04-09,0.039683
1996-08-08,0.136905
2006-11-08,0.095238
2007-12-06,0.093254
2011-12-28,0.057540
2013-08-08,0.069444
2020-10-09,0.027778
2021-04-09,0.021825
1994-03-04,0.095238
2023-12-08,0.084325
1994-11-04,0.126984
2015-08-06,0.055556
2021-10-08,0.065476
2024-05-08,0.084325
1992-12-24,0.097222
2006-03-08,0.079365
2011-12-08,0.055556
2020-03-09,0.043651
1992-10-05,0.101190