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).
253 lines
4.2 KiB
Plaintext
253 lines
4.2 KiB
Plaintext
Date,Dividends
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1997-05-30,0.064
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1997-06-30,0.061
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1997-07-31,0.064
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1997-08-29,0.064
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1997-09-30,0.061
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1997-10-31,0.062
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1997-11-28,0.059
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1997-12-31,0.062
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1998-01-30,0.063
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1998-02-27,0.054
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1998-03-31,0.059
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1998-04-30,0.056
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1998-05-29,0.057
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1998-06-30,0.057
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1998-07-31,0.063
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1998-08-31,0.061
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1998-09-30,0.057
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1998-10-30,0.057
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1998-11-30,0.053
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1998-12-31,0.055
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1999-01-29,0.055
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1999-02-26,0.049
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1999-03-31,0.054
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1999-04-30,0.054
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1999-05-28,0.058
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1999-06-30,0.055
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1999-07-30,0.061
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1999-08-31,0.061
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1999-09-30,0.058
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1999-10-29,0.059
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1999-11-30,0.057
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1999-12-31,0.066
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2000-01-31,0.062
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2000-02-29,0.058
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2000-03-31,0.062
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2000-04-28,0.061
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2000-05-31,0.068
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2000-06-30,0.066
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2000-07-31,0.07
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2000-08-31,0.068
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2000-09-29,0.065
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2000-10-31,0.067
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2000-11-30,0.065
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2000-12-29,0.071
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2001-01-31,0.071
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2001-02-28,0.058
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2001-03-30,0.061
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2001-04-30,0.056
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2001-05-31,0.053
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2001-06-29,0.049
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2001-07-31,0.049
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2001-08-31,0.048
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2001-09-28,0.045
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2001-10-31,0.041
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2001-11-30,0.037
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2001-12-31,0.034
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2002-01-31,0.03
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2002-02-28,0.027
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2002-03-28,0.031
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2002-04-30,0.031
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2002-05-31,0.035
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2002-06-28,0.033
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2002-07-31,0.033
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2002-08-30,0.033
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2002-09-30,0.032
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2002-10-31,0.032
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2002-11-29,0.029
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2002-12-31,0.032
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2003-01-31,0.031
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2003-02-28,0.026
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2003-03-31,0.031
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2003-04-30,0.021
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2003-05-30,0.024
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2003-06-30,0.03
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2003-07-31,0.031
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2003-08-29,0.027
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2003-09-30,0.025
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2003-10-31,0.026
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2003-11-28,0.026
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2003-12-31,0.024
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2004-01-30,0.029
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2004-02-27,0.025
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2004-03-31,0.025
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2004-04-30,0.023
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2004-05-28,0.022
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2004-06-30,0.017
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2004-07-30,0.021
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2004-08-31,0.026
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2004-09-30,0.026
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2004-10-29,0.027
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2004-11-30,0.027
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2004-12-31,0.03
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2005-01-31,0.031
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2005-02-28,0.028
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2005-03-31,0.033
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2005-04-29,0.033
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2005-05-31,0.035
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2005-06-30,0.035
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2005-07-29,0.037
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2005-08-31,0.035
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2005-09-30,0.036
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2005-10-31,0.039
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2005-11-30,0.039
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2005-12-30,0.042
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2006-01-31,0.042
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2006-02-28,0.038
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2006-03-31,0.044
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2006-04-28,0.045
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2006-06-30,0.047
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2006-07-31,0.051
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2006-08-31,0.051
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2006-09-29,0.048
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2006-10-31,0.051
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2006-11-30,0.05
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2006-12-29,0.053
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2007-01-31,0.052
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2007-02-28,0.045
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2007-03-30,0.05
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2007-04-30,0.049
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2007-05-31,0.053
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2007-06-29,0.049
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2007-07-31,0.05
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2007-08-31,0.052
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2007-09-28,0.054
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2007-10-31,0.054
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2007-11-30,0.05
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2007-12-31,0.052
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2008-01-31,0.051
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2008-02-29,0.043
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2008-03-31,0.045
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2008-04-30,0.037
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2008-05-30,0.037
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2008-06-30,0.034
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2008-07-31,0.034
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2008-08-29,0.037
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2008-09-30,0.036
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2008-10-31,0.047
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2008-11-28,0.044
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2008-12-31,0.043
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2009-01-30,0.035
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2009-02-27,0.028
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2009-03-31,0.034
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2009-04-30,0.033
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2009-05-29,0.029
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2009-06-30,0.031
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2009-07-31,0.032
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2009-08-31,0.033
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2009-09-30,0.034
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2009-10-30,0.039
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2009-11-30,0.04
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2009-12-31,0.04
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2010-01-29,0.037
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2010-02-26,0.03
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2010-03-31,0.031
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2010-05-28,0.031
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2010-06-30,0.031
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2010-07-30,0.033
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2010-08-31,0.033
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2010-09-30,0.029
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2010-10-29,0.029
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2010-11-30,0.027
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2010-12-31,0.028
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2011-01-31,0.028
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2011-02-28,0.026
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2011-03-31,0.031
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2011-04-29,0.03
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2011-05-31,0.03
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2011-06-30,0.029
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2011-07-29,0.03
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2011-08-31,0.031
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2011-09-30,0.028
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2011-10-31,0.029
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2011-11-30,0.028
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2011-12-30,0.03
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2012-01-31,0.031
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2012-02-29,0.03
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2012-03-30,0.032
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2012-04-30,0.031
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2012-05-31,0.032
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2012-06-29,0.032
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2012-07-31,0.032
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2012-08-31,0.033
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2012-09-28,0.033
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2012-10-31,0.035
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2012-11-30,0.033
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2012-12-31,0.033
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2013-01-31,0.032
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2013-02-28,0.029
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2013-03-28,0.032
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2013-04-30,0.029
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2013-05-31,0.029
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2013-06-28,0.026
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2013-07-31,0.026
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2013-08-30,0.027
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2013-09-30,0.028
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2013-10-31,0.027
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2013-11-29,0.025
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2013-12-31,0.026
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2014-01-31,0.029
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2014-02-28,0.025
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2014-03-31,0.028
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2014-04-30,0.026
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2014-05-30,0.026
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2014-06-30,0.027
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2014-07-31,0.029
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2014-08-29,0.03
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2014-09-30,0.029
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2014-10-31,0.03
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2014-11-28,0.029
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2014-12-31,0.032
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2015-01-30,0.031
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2015-02-27,0.028
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2015-03-31,0.03
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2015-04-30,0.03
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2015-05-29,0.029
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2015-06-30,0.029
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2015-07-31,0.03
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2015-08-31,0.031
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2015-09-30,0.031
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2015-10-30,0.032
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2015-11-30,0.04
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2015-12-31,0.033
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2016-01-29,0.03
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2016-02-29,0.028
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2016-03-31,0.029
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2016-04-29,0.028
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2016-05-31,0.028
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2016-06-30,0.028
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2016-07-29,0.026
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2016-08-31,0.025
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2016-09-30,0.028
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2016-10-31,0.028
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2016-11-30,0.027
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2016-12-30,0.031
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2017-01-31,0.03
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2017-02-28,0.025
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2017-03-31,0.026
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2017-04-28,0.02
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2017-05-31,0.021
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2017-06-30,0.022
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2017-07-31,0.027
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2017-08-31,0.028
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2017-09-29,0.025
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2017-10-31,0.025
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2017-11-30,0.025
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2017-12-27,0.002
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2017-12-29,0.028
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2018-01-31,0.027
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2018-02-28,0.025
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2018-03-29,0.028
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2018-04-30,0.028
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