f/overrides/event-backup/ko-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

228 lines
4.4 KiB
Plaintext

Date,Dividends
1986-03-10,0.016250
1996-09-11,0.062500
2009-11-27,0.205000
1998-11-27,0.075000
2004-09-13,0.125000
2013-03-13,0.280000
2021-03-12,0.420000
1973-03-12,0.004427
2000-09-13,0.085000
2003-09-11,0.110000
2024-03-14,0.485000
1987-11-24,0.017500
1990-09-10,0.025000
2012-06-13,0.255000
1992-09-09,0.035000
2010-09-13,0.220000
1988-06-09,0.018750
1991-09-09,0.030000
1996-11-26,0.062500
2003-03-12,0.110000
2007-06-13,0.170000
1970-06-08,0.003750
1983-03-09,0.013958
2021-11-30,0.420000
2004-11-29,0.125000
2011-03-11,0.235000
2020-03-13,0.410000
2022-11-30,0.440000
1975-06-09,0.005990
1975-09-10,0.005990
2002-11-26,0.100000
2008-11-26,0.190000
1976-06-08,0.006896
1979-09-10,0.010208
1996-03-13,0.062500
2018-03-14,0.390000
2009-06-11,0.205000
2010-03-11,0.220000
1974-06-10,0.005292
1982-05-24,0.012917
1995-03-09,0.055000
1991-11-22,0.030000
1975-03-11,0.005990
1994-11-25,0.048750
2018-09-13,0.390000
2025-09-15,0.510000
2008-06-11,0.190000
1984-03-09,0.014375
1985-06-11,0.015417
1989-03-09,0.021250
1993-09-09,0.042500
2024-11-29,0.485000
1974-09-10,0.005552
2001-09-17,0.090000
2002-09-11,0.100000
2014-09-11,0.305000
2024-06-14,0.485000
1990-03-09,0.025000
1990-11-26,0.025000
1984-06-11,0.014375
1970-09-10,0.003750
1971-06-08,0.004115
1979-06-12,0.010208
2000-03-13,0.085000
2006-06-13,0.155000
2004-06-14,0.125000
1971-03-08,0.004115
1974-11-25,0.005552
1983-11-25,0.013958
2005-06-13,0.140000
1971-09-10,0.004115
1979-11-26,0.010208
1988-09-09,0.018750
1993-11-24,0.042500
2009-03-11,0.205000
2020-09-14,0.410000
1974-03-08,0.005292
1997-06-11,0.070000
2003-06-11,0.110000
2008-03-12,0.190000
2014-03-12,0.305000
2015-06-11,0.330000
1972-06-08,0.004271
2002-03-13,0.100000
2018-11-29,0.390000
2022-09-15,0.440000
1972-03-10,0.004271
1972-11-27,0.004271
1992-06-09,0.035000
1978-03-10,0.009063
1980-03-11,0.011250
1997-03-12,0.070000
2013-09-12,0.280000
2017-06-13,0.370000
2000-11-29,0.085000
2017-11-30,0.370000
2019-11-29,0.400000
2026-03-13,0.530000
2026-06-15,0.530000
1989-06-09,0.021250
1994-06-09,0.048750
2001-11-28,0.090000
2005-09-13,0.140000
2019-06-13,0.400000
2025-12-01,0.510000
1982-09-09,0.012917
1994-09-09,0.048750
2009-09-11,0.205000
2024-09-13,0.485000
1984-09-10,0.014375
1999-06-11,0.080000
2001-09-12,0.180000
1994-03-09,0.048750
1997-09-11,0.070000
2021-09-14,0.420000
1976-11-24,0.006896
1980-11-24,0.011250
1983-06-09,0.013958
1999-09-13,0.080000
2001-06-13,0.090000
1978-06-12,0.009063
1980-06-09,0.011250
2015-03-12,0.330000
2021-06-14,0.420000
1973-09-10,0.004948
1985-09-10,0.015417
1993-06-09,0.042500
1997-11-26,0.070000
2008-09-11,0.190000
1977-11-25,0.008021
1992-03-09,0.035000
2012-03-13,0.255000
2023-06-15,0.460000
1986-06-10,0.016250
1998-09-11,0.075000
2006-11-29,0.155000
2013-11-27,0.280000
2023-03-16,0.460000
1981-03-10,0.012083
1982-03-09,0.012917
1988-03-09,0.018750
1998-06-11,0.075000
2011-09-13,0.235000
2019-03-14,0.400000
2014-06-12,0.305000
1975-11-24,0.005990
1981-06-09,0.012083
1982-11-24,0.012917
1991-03-11,0.030000
2017-03-13,0.370000
2005-03-11,0.140000
2025-06-13,0.510000
1988-11-25,0.018750
1990-06-11,0.025000
1995-09-13,0.055000
2013-06-12,0.280000
2023-09-14,0.460000
1979-03-13,0.010208
1987-03-10,0.017500
1987-09-09,0.017500
2006-03-13,0.155000
2007-09-12,0.170000
2010-11-29,0.220000
1973-06-08,0.004427
1991-06-10,0.030000
2014-11-26,0.305000
2020-11-30,0.410000
1971-11-24,0.004115
1987-06-09,0.017500
2012-09-12,0.255000
2012-11-28,0.255000
1976-03-11,0.006896
1999-11-29,0.080000
2011-06-13,0.235000
2025-03-14,0.510000
2016-11-29,0.350000
2022-06-14,0.440000
1978-09-08,0.009063
1978-11-27,0.009063
1995-11-29,0.055000
1998-03-11,0.075000
2003-11-26,0.110000
2010-06-11,0.220000
1977-09-12,0.008021
1980-09-10,0.011250
1983-09-12,0.013958
1985-03-11,0.015417
2015-11-27,0.330000
1981-09-09,0.012083
1973-11-26,0.004948
1977-03-10,0.008021
1977-06-10,0.008021
1985-11-25,0.015417
1976-09-10,0.006896
1981-11-24,0.012083
1996-06-12,0.062500
2019-09-13,0.400000
2000-06-13,0.085000
2001-03-13,0.090000
2005-11-29,0.140000
1999-03-11,0.080000
1970-11-24,0.003750
1972-09-08,0.004271
1992-11-24,0.035000
2011-11-29,0.235000
2017-09-14,0.370000
1984-11-27,0.014375
2016-03-11,0.350000
2022-03-14,0.440000
1986-09-09,0.016250
1986-11-24,0.016250
2016-06-13,0.350000
2020-06-12,0.410000
2002-06-12,0.100000
2007-03-13,0.170000
2016-09-13,0.350000
2006-09-13,0.155000
2018-06-14,0.390000
2023-11-30,0.460000
1995-06-13,0.055000
1989-09-11,0.021250
1989-11-27,0.021250
1993-03-09,0.042500
2004-03-11,0.125000
2007-11-28,0.170000
2015-09-11,0.330000