f/overrides/event-backup/hiabx-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

204 lines
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Date,Dividends
1995-06-30,0.560000
2016-08-25,0.338000
1991-07-31,0.720000
1991-10-31,0.570000
1991-12-31,0.690000
1992-07-31,0.640000
1994-05-31,0.510000
2017-08-24,0.340000
1988-09-30,0.640000
1990-03-30,0.610000
1985-12-31,0.890000
1986-07-31,0.770000
1987-01-30,0.680000
1996-12-31,0.590000
2020-08-27,0.482000
1983-06-30,0.840000
1984-11-30,0.830000
1993-05-28,0.500000
1996-07-31,0.530000
1999-12-31,5.700000
2018-08-23,0.479000
1986-12-31,0.780000
1989-11-30,0.600000
1985-05-31,0.890000
1985-07-31,0.910000
1987-02-27,0.640000
1987-03-31,0.700000
1993-10-29,0.480000
2007-12-17,0.599000
1982-01-29,11.100000
1984-12-31,0.880000
1992-05-29,0.590000
1994-01-31,2.320000
1996-01-31,0.530000
1983-01-31,16.160000
1984-06-29,0.840000
2007-06-22,0.011000
1987-08-31,0.690000
1995-11-30,0.520000
1994-06-30,0.510000
1997-01-31,0.550000
1989-05-31,0.730000
1992-01-31,2.440000
1986-01-31,0.840000
1989-02-28,0.630000
1992-09-30,0.610000
1995-08-31,0.530000
1984-01-31,0.820000
1985-06-28,0.780000
1990-05-31,0.620000
1991-05-31,0.590000
1991-09-30,0.570000
2015-08-19,0.636000
2024-08-23,0.351000
1985-10-31,0.860000
1987-05-29,0.640000
1988-02-29,0.650000
1991-02-28,0.560000
1994-07-29,0.510000
1987-06-30,0.700000
1987-10-30,0.660000
1986-09-30,0.750000
1997-04-30,0.550000
1989-09-29,0.620000
1993-04-30,0.510000
1994-11-30,0.510000
1996-05-31,0.550000
1996-10-31,0.520000
1997-12-31,3.800000
1987-12-31,0.660000
1988-05-31,0.670000
1990-09-28,0.550000
1995-05-31,0.540000
1988-04-29,0.620000
1992-03-31,0.630000
1990-06-29,0.580000
1991-06-28,0.480000
1994-08-30,0.510000
2021-08-27,0.580000
1983-05-31,4.170000
1984-10-31,0.940000
1995-10-31,0.530000
2005-12-19,0.491000
1985-03-29,0.850000
1990-10-31,0.650000
1988-01-29,0.600000
1992-10-30,0.590000
1995-07-31,0.510000
1995-09-29,0.540000
1998-02-27,0.270000
2019-08-27,0.453000
1986-06-30,0.790000
1987-09-30,0.660000
1989-03-31,0.710000
1993-01-29,2.500000
1996-03-29,0.540000
2008-06-23,0.036000
1984-04-30,0.870000
1985-02-28,0.810000
1986-04-30,0.800000
1994-09-30,0.540000
1995-03-31,0.580000
1996-11-29,0.480000
1997-03-31,0.600000
1998-12-31,5.180000
1984-03-30,0.840000
1985-01-31,0.900000
1986-03-31,0.850000
1986-10-31,0.720000
1987-04-30,0.660000
1988-12-30,0.670000
1984-07-31,0.860000
1984-09-28,0.790000
1989-04-28,0.630000
1992-06-30,0.620000
1984-08-31,0.840000
1988-06-30,0.620000
1989-10-31,0.670000
1990-12-31,0.880000
1992-02-28,0.600000
1993-07-30,0.480000
1994-12-30,0.500000
1995-04-28,0.510000
1984-05-31,0.900000
1985-08-30,0.830000
2003-06-26,0.506000
2022-08-26,0.429000
2025-08-25,0.536000
1996-04-30,0.520000
1999-02-26,0.800000
1986-02-28,0.790000
1987-07-31,0.680000
1989-06-30,0.650000
1989-07-31,0.670000
1990-08-31,0.620000
1991-01-31,0.620000
1983-08-31,0.910000
1983-09-30,0.820000
2006-12-13,0.521000
1996-06-28,0.480000
2000-06-30,0.470000
1991-08-30,0.620000
1992-04-30,0.640000
1994-03-31,0.530000
1996-02-29,0.520000
1996-09-30,0.470000
1983-11-30,0.810000
1986-05-30,0.740000
1994-04-29,0.460000
2004-06-29,0.900000
1986-11-28,0.600000
1992-08-31,0.630000
1993-02-26,0.530000
1993-08-31,0.520000
1993-11-30,0.500000
1995-12-29,0.570000
1985-09-30,0.880000
1988-08-31,0.720000
1988-03-31,0.650000
1988-07-29,0.630000
1989-01-31,0.690000
1990-02-28,0.570000
1991-03-28,0.590000
1993-12-31,0.490000
1983-12-30,0.840000
1987-11-30,0.680000
1997-02-28,0.540000
2008-12-16,0.707000
1985-11-29,0.810000
1988-10-31,0.630000
1990-04-30,0.630000
1991-04-30,0.670000
1992-11-30,0.630000
1992-12-31,0.610000
1980-01-31,6.910000
1985-04-30,0.930000
2004-08-31,0.043000
2023-08-25,0.327000
1993-06-30,0.550000
1995-02-28,0.490000
1989-12-29,0.620000
1990-11-30,0.570000
1991-11-29,0.570000
1993-03-31,0.600000
1996-08-30,0.550000
2009-12-17,0.402000
1983-07-29,0.810000
1986-08-29,0.690000
1989-08-31,0.660000
1994-02-28,0.450000
2005-06-22,0.388000
1981-01-30,9.570000
1983-10-31,0.850000
1990-01-31,0.620000
1990-07-31,0.620000
1993-09-30,0.460000
1994-10-31,0.480000
1995-01-31,0.540000
2001-06-27,5.570000
1984-02-28,0.800000
1988-11-30,0.640000
2006-06-22,0.048000