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).
111 lines
1.8 KiB
Plaintext
111 lines
1.8 KiB
Plaintext
Date,Dividends
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2009-05-29,0.001
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2009-06-30,0.009
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2009-07-31,0.023
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2009-08-31,0.015
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2009-09-30,0.014
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2009-10-30,0.027
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2009-11-30,0.014
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2009-12-09,0.043
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2009-12-31,0.016
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2010-01-29,0.018
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2010-02-26,0.012
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2010-03-31,0.011
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2010-05-28,0.013
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2010-06-30,0.008
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2010-07-30,0.008
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2010-08-31,0.007
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2010-09-30,0.008
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2010-10-29,0.008
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2010-11-30,0.011
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2010-12-08,0.007
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2010-12-31,0.01
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2011-01-31,0.008
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2011-02-28,0.006
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2011-03-31,0.007
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2011-04-29,0.009
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2011-05-31,0.012
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2011-06-30,0.008
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2011-07-29,0.006
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2011-08-31,0.008
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2011-09-30,0.009
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2011-10-31,0.009
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2011-11-30,0.008
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2011-12-28,0.023
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2011-12-30,0.007
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2012-01-31,0.005
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2012-02-29,0.012
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2012-03-30,0.014
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2012-04-30,0.015
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2012-05-31,0.015
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2012-06-29,0.013
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2012-07-31,0.007
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2012-08-31,0.006
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2012-09-28,0.003
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2012-10-31,0.003
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2012-11-30,0.002
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2012-12-27,0.068
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2013-02-28,0.006
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2013-03-28,0.004
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2013-04-30,0.011
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2013-05-31,0.007
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2013-06-28,0.003
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2013-07-31,0.001
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2013-08-30,0.001
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2013-09-30,0.003
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2013-10-31,0.004
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2013-11-29,0.006
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2013-12-27,0.014
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2013-12-31,0.008
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2014-01-31,0.008
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2014-02-28,0.007
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2014-03-31,0.005
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2014-04-30,0.007
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2014-05-30,0.012
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2014-06-30,0.016
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2014-07-31,0.016
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2014-08-29,0.015
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2014-09-30,0.016
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2014-10-31,0.017
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2014-11-28,0.014
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2014-12-29,0.111
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2014-12-31,0.01
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2015-02-27,0.006
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2015-03-31,0.007
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2015-04-30,0.014
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2015-05-29,0.016
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2015-06-30,0.015
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2015-07-31,0.015
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2015-08-31,0.015
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2015-09-30,0.017
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2015-10-30,0.017
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2015-11-30,0.016
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2015-12-29,0.263
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2015-12-31,0.019
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2016-01-29,0.017
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2016-02-29,0.019
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2016-03-31,0.02
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2016-04-29,0.018
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2016-05-31,0.018
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2016-06-30,0.018
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2016-07-29,0.017
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2016-08-31,0.018
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2016-10-31,0.019
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2016-11-30,0.02
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2016-12-30,0.022
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2017-01-31,0.017
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2017-02-28,0.017
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2017-03-31,0.02
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2017-04-28,0.019
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2017-05-31,0.021
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2017-06-30,0.024
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2017-07-31,0.02
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2017-08-31,0.021
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2017-09-29,0.023
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2017-10-31,0.022
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2017-11-30,0.023
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2017-12-27,0.192
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2017-12-29,0.026
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2018-01-31,0.027
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2018-02-28,0.025
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