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).
106 lines
1.7 KiB
Plaintext
106 lines
1.7 KiB
Plaintext
Date,Dividends
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1994-10-26,0.43
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1995-01-26,0.4
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1995-04-25,0.4
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1995-07-28,0.4
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1995-10-30,0.4
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1995-12-27,0.4
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1996-03-28,0.4
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1996-06-27,0.4
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1996-09-27,0.41
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1996-12-27,0.41
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1997-03-27,0.41
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1997-06-27,0.41
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1997-09-29,0.42
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1997-12-29,0.42
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1998-03-30,0.42
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1998-06-29,0.42
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1998-09-29,0.45
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1998-12-29,0.45
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1999-03-30,0.45
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1999-06-29,0.45
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1999-09-29,0.52
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1999-12-29,0.52
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2000-03-29,0.52
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2000-06-28,0.52
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2000-09-27,0.57
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2000-12-27,0.57
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2001-03-28,0.57
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2001-06-27,0.57
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2001-09-27,0.59
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2001-12-27,0.59
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2002-03-27,0.59
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2002-06-27,0.59
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2002-09-27,0.6
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2002-12-27,0.6
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2003-03-28,0.6
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2003-06-27,0.6
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2003-09-29,0.605
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2003-12-29,0.605
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2004-03-30,0.605
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2004-06-29,0.605
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2004-09-29,0.61
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2004-12-29,0.61
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2005-03-30,0.61
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2005-06-29,0.61
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2005-09-28,0.615
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2005-12-28,0.615
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2006-03-29,0.615
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2006-06-28,0.615
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2006-09-27,0.62
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2006-12-27,0.62
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2007-03-28,0.62
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2007-06-27,0.62
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2007-09-27,0.625
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2007-12-27,0.625
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2008-03-28,0.625
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2008-06-27,0.625
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2008-09-29,0.625
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2008-12-29,0.475
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2009-03-30,0.475
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2009-06-29,0.475
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2009-09-29,0.475
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2009-12-29,0.475
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2010-03-30,0.475
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2010-06-29,0.475
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2010-09-29,0.475
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2010-12-29,0.475
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2011-03-30,0.475
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2011-06-29,0.475
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2011-09-28,0.475
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2011-12-28,0.475
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2012-03-29,0.475
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2012-06-27,0.475
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2012-09-27,0.475
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2012-12-28,0.475
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2013-03-27,0.475
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2013-06-27,0.475
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2013-09-27,0.475
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2013-12-30,0.475
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2014-03-28,0.475
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2014-06-27,0.475
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2014-09-29,0.475
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2014-12-30,0.475
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2015-03-30,0.475
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2015-06-29,0.475
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2015-09-29,0.475
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2015-12-30,0.475
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2015-12-31,0.475
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2016-03-29,0.475
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2016-03-30,0.475
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2016-06-29,0.475
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2016-09-29,0.475
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2016-12-29,0.475
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2017-03-29,0.4
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2017-06-29,0.4
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2017-09-29,0.4
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2017-12-29,0.4
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2018-03-29,0.4
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2018-06-29,0.4
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2018-09-28,0.4
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2018-12-31,0.4
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2019-03-29,0.41
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2019-06-28,0.41
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2019-09-30,0.41
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2019-12-31,0.41
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