f/overrides/event-backup/hstax-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

216 lines
4.2 KiB
Plaintext

Date,Dividends
1988-02-29,0.580000
1991-01-31,5.880000
1991-05-31,0.710000
1991-07-31,0.220000
1996-11-29,0.550000
1984-06-29,0.040000
1990-02-28,0.770000
1997-04-30,0.270000
1987-04-30,0.210000
1988-11-30,0.540000
1993-11-30,0.640000
2016-08-25,0.096000
1986-03-31,0.370000
1987-08-31,0.560000
1988-09-30,0.430000
1992-04-30,0.070000
1995-04-28,0.350000
1998-12-31,4.850000
1987-02-27,0.050000
1996-07-31,0.500000
1988-12-30,0.050000
1994-10-31,0.340000
2009-12-17,0.442000
1984-01-31,16.900000
1993-02-26,0.510000
2006-12-13,0.703000
1983-08-31,0.610000
1992-06-30,0.750000
1989-02-28,0.510000
1989-11-30,0.550000
1993-01-29,2.070000
1994-03-31,0.560000
1995-01-31,11.870000
1995-10-31,0.440000
1996-10-31,0.230000
2008-12-16,0.740000
1988-07-29,0.010000
1993-08-31,0.610000
1996-02-29,0.460000
1982-01-29,0.580000
1987-07-31,0.130000
1993-09-30,0.590000
1994-06-30,0.570000
1994-08-31,0.670000
1997-01-31,0.310000
1992-02-28,0.050000
1995-07-31,0.410000
1999-12-31,6.190000
1989-03-31,0.390000
1997-03-31,0.300000
1983-11-30,0.550000
1984-11-30,0.590000
1986-08-29,0.060000
1986-10-31,0.100000
1995-08-31,0.740000
2025-12-19,1.408000
2008-06-23,0.068000
2024-08-23,3.232000
1984-04-30,0.140000
1985-05-31,0.910000
1989-04-28,0.030000
2023-08-25,4.761000
1991-04-30,0.220000
2014-12-22,1.123000
1987-03-31,0.390000
1996-08-30,0.500000
1990-12-31,0.670000
1984-02-28,0.640000
1989-10-31,0.360000
2022-08-26,10.793000
1980-01-31,4.530000
1993-07-30,0.200000
1995-11-30,0.660000
1997-12-31,3.350000
2000-12-28,5.620000
2023-12-22,1.252000
1999-02-26,54.660000
1983-12-30,0.020000
1986-07-31,0.240000
1991-12-31,0.520000
1983-09-30,0.270000
1984-08-31,0.780000
1984-12-31,0.440000
1990-05-31,0.980000
1995-06-30,0.690000
1983-10-31,0.250000
1989-12-29,0.070000
2003-06-26,0.038000
2017-12-20,1.338000
1984-07-31,0.380000
1987-05-29,0.070000
1987-10-30,0.010000
2025-08-25,13.346000
1990-08-31,0.700000
1993-04-30,0.190000
1994-02-28,0.560000
2004-06-29,0.016000
1985-04-30,0.280000
1985-12-31,0.430000
1988-03-31,0.360000
1995-12-29,0.580000
1990-10-31,0.270000
2005-12-19,0.617000
1992-11-30,0.590000
2004-12-15,0.474000
2024-12-20,1.482000
1989-09-29,0.060000
1993-12-31,0.440000
2021-08-27,3.569000
1985-03-29,0.050000
1990-11-30,0.640000
1986-12-31,0.350000
1992-08-31,0.630000
1995-05-31,0.730000
1996-04-30,0.380000
2018-12-21,1.271000
1986-01-31,12.870000
2022-12-21,1.388000
1985-07-31,0.230000
1996-09-30,0.580000
2017-08-24,0.042000
1983-05-31,2.680000
1988-05-31,0.760000
1994-11-30,0.730000
1997-02-28,22.340000
2018-08-23,0.056000
1985-06-28,0.040000
1988-08-31,0.580000
1990-01-31,14.680000
2015-08-19,0.076000
2019-08-27,7.659000
1988-06-30,0.370000
1985-01-31,6.780000
1987-11-30,0.560000
1998-02-26,18.620000
1984-05-31,0.940000
1985-10-31,0.240000
1990-04-30,0.250000
2003-12-29,0.439000
2006-06-22,0.009000
1986-05-30,0.080000
1987-12-31,18.730000
1993-06-30,0.570000
2020-08-27,6.251000
1985-09-30,0.360000
1991-08-30,0.060000
1992-03-31,0.600000
1996-03-29,0.540000
2007-12-17,0.527000
1984-10-31,0.370000
1991-11-29,0.060000
2015-12-22,1.102000
1984-03-30,0.030000
1989-01-31,5.820000
1990-03-30,0.070000
1991-03-28,0.070000
2019-12-23,1.693000
1983-01-31,8.960000
1986-02-28,0.770000
1988-04-29,0.010000
2009-08-27,0.048000
1981-01-30,0.470000
1989-06-30,0.840000
1990-09-28,0.070000
1991-09-30,0.470000
1985-08-30,0.080000
1996-06-28,0.430000
1996-12-31,0.470000
1986-06-30,0.340000
1987-01-30,1.030000
1992-01-31,18.120000
1992-09-30,0.750000
1995-02-28,0.610000
1988-01-29,0.010000
1990-07-31,0.390000
1987-06-30,0.390000
1994-01-31,18.900000
2016-12-21,1.166000
1992-05-29,0.040000
1994-09-30,0.620000
1996-01-31,15.290000
2021-12-22,1.618000
1985-11-29,0.070000
1988-10-31,0.120000
1993-03-31,0.600000
1996-05-31,0.700000
2020-12-21,1.407000
1987-09-30,0.400000
1992-12-31,0.610000
2007-06-19,0.047000
1983-07-29,0.010000
1986-09-30,0.350000
1986-11-28,0.050000
1992-07-31,0.110000
1994-05-31,0.590000
1994-12-30,0.720000
1995-09-29,0.610000
1995-03-31,0.720000
1984-09-28,0.060000
1985-02-28,0.630000
1991-02-28,0.640000
1994-07-29,0.260000
2005-06-22,0.278000
1990-06-29,0.070000
1991-06-28,0.070000
1991-10-31,0.260000
1986-04-30,0.230000
1993-10-29,0.210000
2000-06-28,75.030000
1983-06-30,0.280000
1989-05-31,0.920000
1989-08-31,0.750000
1993-05-28,0.520000
1994-04-29,0.230000