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).
185 lines
3.1 KiB
Plaintext
185 lines
3.1 KiB
Plaintext
Date,Dividends
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1972-06-26,0.025
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1972-09-25,0.025
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1972-12-22,0.025
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1973-03-26,0.025
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1973-06-25,0.02778
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1973-09-24,0.02778
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1973-12-24,0.02778
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1974-03-25,0.02778
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1974-06-24,0.03333
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1974-09-24,0.03333
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1974-12-24,0.03889
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1975-03-24,0.03889
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1975-06-24,0.03889
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1975-09-24,0.04444
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1975-12-24,0.04444
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1976-03-25,0.04444
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1976-06-24,0.05556
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1976-09-24,0.05556
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1976-12-27,0.05556
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1977-03-25,0.05556
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1977-06-24,0.06667
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1977-09-26,0.06667
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1977-12-23,0.06667
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1978-03-27,0.06667
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1978-06-26,0.06667
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1978-09-25,0.07778
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1978-12-22,0.07778
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1979-03-26,0.07778
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1979-06-25,0.07778
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1979-09-24,0.08889
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1979-12-24,0.08889
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1980-03-25,0.08889
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1980-06-24,0.08889
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1980-09-24,0.08889
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1980-12-24,0.1
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1981-03-25,0.1
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1981-06-24,0.1
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1981-09-24,0.1
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1981-12-24,0.1
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1982-03-30,0.1
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1982-06-24,0.1
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1982-10-04,0.1
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1982-12-27,0.1
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1983-03-28,0.1
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1983-06-24,0.1
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1983-09-26,0.1
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1983-12-23,0.1
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1984-03-26,0.1
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1984-06-25,0.1
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1984-09-24,0.1
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1984-12-24,0.1
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1985-03-26,0.1
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1985-06-25,0.1
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1985-09-24,0.1
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1985-12-24,0.1
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1986-03-24,0.1
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1986-06-24,0.1
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1986-09-24,0.11111
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1986-12-24,0.11111
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1987-03-25,0.11111
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1987-06-24,0.12222
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1987-09-24,0.12222
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1987-12-24,0.12222
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1988-03-25,0.13333
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1988-06-24,0.13333
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1988-09-26,0.15556
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1988-12-23,0.15556
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1989-03-27,0.17778
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1989-06-26,0.17778
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1989-09-25,0.21667
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1989-12-22,0.21667
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1990-03-26,0.21667
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1990-06-25,0.21667
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1990-09-24,0.21667
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1990-12-24,0.21667
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1991-03-22,0.21667
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1991-06-24,0.21667
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1991-09-24,0.21667
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1991-12-24,0.21667
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1992-03-25,0.21667
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1992-06-24,0.21667
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1992-09-24,0.21667
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1992-12-24,0.21667
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1993-03-25,0.21667
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1993-06-24,0.21667
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1993-09-24,0.21667
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1993-12-27,0.21667
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1994-03-25,0.21667
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1994-06-24,0.21667
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1994-09-26,0.21667
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1994-12-23,0.21667
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1995-03-27,0.21667
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1995-06-28,0.25
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1995-09-27,0.25
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1995-12-27,0.25
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1996-03-27,0.25
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1996-06-26,0.25
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1996-09-26,0.25
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1996-12-27,0.25
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1997-03-26,0.25
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1997-06-26,0.29
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1997-09-26,0.29
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1997-12-29,0.29
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1998-03-27,0.29
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1998-06-26,0.29
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1998-09-28,0.29
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1998-12-29,0.29
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1999-03-29,0.29
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1999-06-28,0.29
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1999-09-28,0.29
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1999-12-29,0.29
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2000-03-29,0.29
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2000-06-28,0.29
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2000-09-27,0.29
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2000-12-27,0.29
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2001-02-07,0.121
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2001-03-28,0.169
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2001-06-27,0.335
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2001-09-26,0.335
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2001-12-27,0.335
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2002-03-26,0.335
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2002-06-26,0.335
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2002-09-26,0.335
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2002-12-27,0.335
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2003-03-26,0.335
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2003-06-26,0.335
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2003-09-26,0.335
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2003-12-29,0.335
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2004-03-29,0.335
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2004-06-28,0.335
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2004-09-28,0.335
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2004-12-29,0.335
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2005-03-29,0.335
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2005-06-28,0.335
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2005-09-28,0.335
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2005-12-28,0.335
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2006-03-29,0.375
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2006-06-28,0.375
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2006-09-27,0.375
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2006-12-27,0.375
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2007-03-28,0.375
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2007-06-27,0.42
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2007-09-26,0.42
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2007-12-27,0.42
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2008-03-27,0.42
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2008-06-26,0.42
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2008-09-26,0.42
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2008-12-29,0.42
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2009-03-27,0.15
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2009-06-26,0.15
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2009-09-28,0.15
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2009-12-29,0.15
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2010-03-29,0.15
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2010-06-28,0.15
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2010-09-28,0.15
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2010-12-29,0.15
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2011-03-29,0.15
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2011-06-28,0.25
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2011-09-28,0.25
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2011-12-28,0.25
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2012-03-28,0.25
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2012-06-27,0.32
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2012-09-26,0.32
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2012-12-20,0.32
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2013-03-26,0.32
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2013-06-26,0.32
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2013-09-26,0.32
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2013-12-27,0.32
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2014-03-27,0.37
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2014-06-26,0.37
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2014-09-26,0.37
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2014-12-29,0.42
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2015-03-27,0.42
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2015-06-26,0.42
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2015-09-28,0.42
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2015-12-29,0.46
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2016-03-29,0.46
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2016-06-28,0.46
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2016-09-28,0.46
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2016-12-23,0.46
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2017-03-29,0.46
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2017-06-28,0.46
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2017-07-27,0.46
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