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).
142 lines
2.3 KiB
Plaintext
142 lines
2.3 KiB
Plaintext
Date,Dividends
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1985-08-19,0.03125
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1985-11-18,0.03125
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1986-02-14,0.03125
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1986-05-19,0.03125
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1986-08-18,0.03125
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1986-11-17,0.03125
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1987-02-13,0.035
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1987-05-18,0.035
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1987-08-24,0.035
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1987-11-20,0.035
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1988-02-22,0.04
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1988-05-23,0.04
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1988-08-22,0.035
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1988-11-18,0.04
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1989-02-17,0.04
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1989-05-22,0.04
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1989-08-21,0.04
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1989-11-17,0.04
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1990-02-26,0.04
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1990-05-22,0.04
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1990-08-21,0.04
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1990-11-16,0.04
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1991-02-22,0.04
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1991-05-24,0.04
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1991-08-26,0.04
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1991-11-22,0.04
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1992-02-24,0.04
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1992-06-03,0.04
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1992-08-25,0.04
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1992-11-23,0.04
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1993-02-22,0.04
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1993-05-24,0.04
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1993-08-25,0.04
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1993-11-23,0.04
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1994-02-22,0.045
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1994-05-24,0.045
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1994-08-25,0.045
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1994-11-23,0.045
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1995-02-22,0.05
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1995-05-24,0.05
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1995-08-29,0.05
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1995-11-28,0.05
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1996-02-27,0.055
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1996-05-29,0.055
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1996-08-28,0.055
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1996-11-26,0.055
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1997-02-26,0.065
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1997-05-28,0.065
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1997-08-27,0.065
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1997-11-25,0.065
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1998-02-25,0.07
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1998-05-27,0.07
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1998-08-27,0.07
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1998-11-25,0.07
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1999-02-24,0.075
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1999-05-26,0.075
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1999-08-27,0.075
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1999-11-26,0.075
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2000-02-25,0.08
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2000-05-26,0.08
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2000-08-29,0.08
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2000-11-28,0.08
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2001-02-26,0.085
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2001-05-29,0.085
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2001-08-29,0.085
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2001-11-28,0.085
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2002-02-26,0.09
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2002-05-29,0.09
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2002-08-28,0.09
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2002-11-25,0.09
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2003-02-26,0.095
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2003-05-28,0.095
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2003-08-27,0.095
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2003-11-24,0.095
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2004-02-25,0.12
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2004-05-26,0.12
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2004-08-27,0.12
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2004-11-26,0.12
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2005-02-24,0.14
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2005-05-26,0.14
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2005-08-29,0.14
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2005-11-28,0.14
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2006-02-24,0.16
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2006-05-26,0.16
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2006-08-29,0.16
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2006-11-28,0.16
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2007-02-26,0.185
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2007-05-29,0.185
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2007-08-29,0.185
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2007-11-28,0.185
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2008-02-27,0.215
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2008-05-28,0.215
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2008-08-27,0.215
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2008-11-24,0.215
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2009-02-25,0.225
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2009-05-27,0.225
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2009-08-27,0.225
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2009-11-25,0.225
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2010-02-24,0.23
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2010-05-26,0.23
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2010-08-27,0.23
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2010-11-26,0.23
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2011-02-24,0.255
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2011-05-26,0.255
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2011-08-29,0.255000
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2011-11-28,0.383
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2012-02-24,0.383
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2012-05-29,0.383
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2012-08-29,0.383
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2012-11-28,0.383
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2013-02-26,0.407
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2013-05-29,0.407
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2013-08-28,0.407
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2013-11-26,0.407
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2013-11-27,0.4075
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2014-02-26,0.433
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2014-05-28,0.433
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2014-08-27,0.433
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2014-11-25,0.433
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2015-02-25,0.458
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2015-05-27,0.458
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2015-08-27,0.457500
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2015-11-25,0.458
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2016-02-25,0.495
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2016-05-26,0.495
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2016-08-29,0.495
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2016-11-28,0.495
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2017-02-24,0.52
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2017-05-26,0.52
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2017-08-29,0.52
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2017-11-29,0.52
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2018-02-27,0.545
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2018-05-30,0.545
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2018-08-30,0.545
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2018-11-29,0.545000
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2019-02-27,0.575
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2019-05-30,0.575000
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2019-08-29,0.575000
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2019-11-27,0.575
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2020-02-27,0.595
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