Greg Pomerantz
3c5bee96ce
Some dump files carry a trailing 'ctime' column: an older pipeline appended a FULL re-download of the symbol per download (up to ~28 vintages per date, 2019-2022). The consumer keeps the last row per date, so it silently used stale (~2021) vintages where Yahoo later revised values. scripts/clean_multivintage.py keeps, per date, the rows from the newest ctime (event files keep distinct same-day amounts; history/split keep the single newest row), drops the ctime column, sorts by date. Applied to the data root and overrides/frozen (which carried the same artifact): 1,065 files, 2,202,712 stale rows dropped. Also: stripped 3 UTF-8 BOMs (teg/lo/krft), refreshed the event backup with the cleaned files, and re-ran the double-listing scan: category C (83 symbols, 18,636 repeated within-file rows) is fully explained by the multi-vintage artifact and is now gone; A (6,589 pairs, corrected) and B (12,366 pairs, open review list) are unchanged. Whole-set structural QC after cleaning: 0 duplicate dates, 3 syms/15 rows of OHLC invariant violations, 15 syms/2,897 rows of non-positive prices (mostly long-delisted tickers), 8 unsorted files (reader sorts).
137 lines
2.2 KiB
Plaintext
137 lines
2.2 KiB
Plaintext
Date,Dividends
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1985-01-29,0.3468
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1985-04-30,0.3468
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1985-07-30,0.3802
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1985-10-29,0.38
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1986-01-28,0.38
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1986-04-29,0.38
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1986-07-29,0.39
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1986-10-28,0.39
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1987-01-27,0.39
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1987-04-28,0.42
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1987-07-28,0.42
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1987-10-28,0.42
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1988-01-27,0.44
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1988-04-26,0.44
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1988-07-26,0.44
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1988-10-25,0.38
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1989-01-25,0.38
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1989-04-26,0.4
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1989-07-26,0.42
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1989-10-25,0.42
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1990-01-25,0.43
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1990-04-26,0.43
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1990-07-26,0.43
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1990-10-25,0.43
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1991-01-25,0.435
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1991-04-26,0.44
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1991-07-26,0.445
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1991-10-25,0.45
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1992-01-24,0.455
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1992-04-29,0.46
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1992-07-29,0.465
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1992-10-28,0.47
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1993-01-26,0.475
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1993-04-30,0.48
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1993-07-28,0.485
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1993-10-27,0.49
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1994-01-31,0.495
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1994-05-02,0.5
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1994-08-01,0.505
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1994-10-31,0.51
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1995-01-30,0.515
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1995-05-01,0.52
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1995-08-02,0.52
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1995-08-04,0.52
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1995-11-01,0.52
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1996-01-31,0.52
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1996-05-01,0.52
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1996-07-31,0.52
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1996-10-30,0.52
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1997-01-30,0.52
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1997-05-01,0.525
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1997-07-31,0.53
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1997-10-30,0.535
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1998-01-30,0.54
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1998-05-01,0.545
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1998-07-31,0.55
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1998-10-30,0.555
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1999-01-29,0.56
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1999-04-30,0.565
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1999-07-30,0.57
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1999-10-29,0.575
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2000-01-28,0.58
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2000-04-28,0.585
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2000-07-28,0.585
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2000-10-27,0.585
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2001-01-29,0.585
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2001-04-27,0.585
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2001-07-27,0.585
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2001-10-29,0.585
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2002-01-29,0.585
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2002-04-26,0.585
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2002-07-29,0.585
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2002-10-29,0.585
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2003-01-29,0.585
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2003-04-28,0.585
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2003-07-29,0.585
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2003-10-30,0.585
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2004-01-28,0.585
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2004-04-28,0.6
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2004-07-28,0.6
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2004-10-28,0.6
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2005-01-27,0.6
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2005-04-27,0.62
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2005-07-27,0.62
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2005-10-27,0.62
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2006-01-27,0.62
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2006-04-26,0.64
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2006-07-27,0.64
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2006-10-27,0.64
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2006-12-20,0.341
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2007-01-29,0.299
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2007-05-02,0.66
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2007-08-01,0.66
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2007-10-31,0.66
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2008-01-29,0.66
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2008-04-30,0.68
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2008-07-30,0.68
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2008-11-06,0.68
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2009-02-05,0.68
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2009-05-07,0.68
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2009-08-06,0.68
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2009-11-05,0.68
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2010-02-04,0.68
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2010-05-06,0.68
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2010-08-05,0.69
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2010-11-04,0.69
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2011-02-04,0.69
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2011-05-06,0.715
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2011-08-05,0.715
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2011-11-04,0.715
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2012-02-03,0.74
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2012-05-04,0.74
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2012-08-03,0.74
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2012-11-02,0.74
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2013-02-01,0.765
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2013-05-03,0.765
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2013-08-02,0.765
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2013-11-07,0.765
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2014-02-06,0.795
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2014-05-08,0.795
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2014-08-07,0.795
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2014-11-06,0.795
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2015-02-06,0.825
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2015-05-08,0.825
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2015-08-07,0.825
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2015-11-06,0.825
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2016-02-05,0.86
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2016-05-06,0.86
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2016-08-05,0.86
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2016-11-04,0.86
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2017-02-03,0.87
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2017-05-05,0.87
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2017-08-04,0.87
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2017-11-06,0.87
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2018-02-12,0.87
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