f/overrides/event-backup/hiacx-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

197 lines
3.8 KiB
Plaintext

Date,Dividends
1985-08-30,0.170000
1987-11-30,0.150000
1988-11-30,0.180000
1989-01-31,3.530000
1989-12-29,0.250000
1991-07-31,0.060000
1996-12-31,0.240000
1999-02-26,30.330000
2015-08-19,10.606000
1984-07-31,0.200000
1990-06-29,0.320000
1991-09-30,0.120000
1993-11-30,0.060000
1994-02-28,0.060000
1996-11-29,0.010000
2008-06-23,0.003000
1984-06-29,0.560000
1986-02-28,0.180000
1986-04-30,0.100000
1987-10-30,0.050000
1990-03-30,0.290000
1996-07-31,0.080000
1984-12-31,0.110000
1990-07-31,0.080000
1992-01-31,36.150000
1992-06-30,0.100000
1995-05-31,0.450000
2018-08-23,4.291000
2019-08-27,5.007000
1985-04-30,0.150000
1987-03-31,0.170000
1988-07-29,0.060000
1995-07-31,0.230000
1998-02-27,28.980000
2005-06-22,0.162000
2018-12-21,1.137000
1985-05-31,0.100000
1986-10-31,0.080000
1989-05-31,0.400000
2000-12-28,4.180000
1985-01-31,2.390000
1987-08-31,0.150000
1988-01-29,0.030000
1990-08-31,0.220000
1993-05-28,0.050000
1998-12-31,2.460000
1984-04-30,0.720000
1986-03-31,0.180000
1986-11-28,0.230000
1988-05-31,0.160000
1995-02-28,0.220000
1997-12-31,1.410000
2016-08-25,4.274000
2023-12-22,0.423000
1986-05-30,0.220000
1988-08-31,0.120000
1989-10-31,0.200000
1991-05-31,0.250000
1993-02-26,0.030000
1995-08-31,0.290000
2009-12-30,0.248000
2020-12-21,1.877000
2021-08-27,3.082000
1988-06-30,0.140000
1988-09-30,0.160000
1990-02-28,0.280000
1992-04-30,0.030000
1994-01-31,26.210000
1986-06-30,0.140000
1987-02-27,0.490000
1987-04-30,0.140000
1988-03-31,0.110000
1990-10-31,0.220000
1995-03-31,0.280000
1995-06-30,0.250000
2007-12-17,0.035000
2008-12-16,0.720000
2020-08-27,2.108000
2023-08-25,0.697000
2024-08-23,0.872000
1990-05-31,0.330000
1992-12-31,0.070000
1995-01-31,15.740000
2004-06-29,0.018000
2022-08-26,6.395000
2024-12-20,1.727000
1986-12-31,0.150000
1989-02-28,0.140000
1994-05-31,0.170000
1996-03-29,0.280000
2000-06-28,9.251000
2017-08-24,0.688000
1992-09-30,0.170000
1993-01-29,10.830000
1993-06-30,0.010000
1993-12-31,0.030000
1995-04-28,0.160000
1985-03-29,0.260000
1986-09-30,0.030000
1987-07-31,0.090000
1988-02-29,0.120000
1989-07-31,0.120000
1991-01-31,0.320000
1991-02-28,0.260000
1991-04-30,0.290000
1995-10-31,0.150000
2007-06-19,0.035000
1987-12-31,0.930000
1989-04-28,0.140000
1989-06-30,0.240000
1992-07-31,0.040000
1994-03-31,0.140000
2003-12-29,0.216000
2006-12-13,0.757000
2016-12-21,0.462000
1988-12-30,0.130000
1989-09-29,0.250000
1997-02-28,29.580000
1985-10-31,0.120000
1990-09-28,0.250000
1991-11-29,0.140000
1996-06-28,0.300000
1996-10-31,0.270000
1987-01-30,5.910000
1991-08-30,0.270000
1994-07-29,0.090000
1995-09-29,0.190000
1995-11-30,0.370000
1997-04-30,0.480000
1984-05-31,0.630000
1984-11-30,0.120000
1991-06-28,0.270000
2005-12-19,0.360000
2022-12-21,0.290000
1984-09-28,0.070000
1985-09-30,0.240000
1987-05-29,0.270000
1990-11-30,0.280000
1993-03-31,0.040000
1997-01-31,0.130000
2025-12-19,0.984000
1990-01-31,6.720000
1990-04-30,0.080000
1991-12-31,0.040000
2009-12-17,0.040000
2014-12-22,0.702000
1989-03-31,0.080000
1994-11-30,0.190000
2021-12-22,2.106000
1986-08-29,0.280000
1989-11-30,0.250000
1992-02-28,0.110000
1995-12-29,0.210000
1984-08-31,0.320000
1987-06-30,0.150000
1992-05-29,0.030000
1996-01-31,22.880000
1997-03-31,0.190000
2004-12-15,0.148000
2017-12-20,2.457000
2025-08-25,5.913000
1985-02-28,0.120000
1985-11-29,0.130000
1992-08-31,0.120000
1994-06-30,0.100000
1996-08-30,0.180000
1996-09-30,0.170000
1999-06-25,0.060000
1999-12-28,2.680000
1987-09-30,0.130000
1990-12-31,0.260000
1993-09-30,0.100000
1994-12-30,0.140000
1996-04-30,0.130000
2001-12-28,2.650000
2019-12-23,0.783000
1985-07-31,0.080000
1994-08-31,0.090000
1994-10-31,0.080000
2003-06-26,0.008000
1986-07-31,0.140000
1988-10-31,0.180000
1991-03-28,0.090000
1992-03-31,0.060000
1996-02-29,0.280000
2001-06-27,0.030000
1985-06-28,0.150000
1988-04-29,0.070000
1989-08-31,0.130000
1992-11-30,0.040000
1996-05-31,0.310000
1985-12-31,0.110000
2015-12-22,0.471000
1986-01-31,4.900000
1994-09-30,0.030000