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).
133 lines
2.6 KiB
Plaintext
133 lines
2.6 KiB
Plaintext
Date,Dividends
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2012-01-31,0.036000
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2012-02-29,0.040000
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2012-03-30,0.044000
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2012-04-30,0.042000
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2012-05-31,0.045000
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2012-06-29,0.041000
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2012-07-31,0.043000
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2012-08-31,0.042000
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2012-09-28,0.041000
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2012-10-31,0.044000
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2012-11-30,0.042000
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2012-12-07,0.000000
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2012-12-31,0.045000
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2013-01-31,0.041000
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2013-02-28,0.037000
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2013-03-28,0.044000
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2013-04-30,0.040000
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2013-05-31,0.045000
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2013-06-07,0.000000
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2013-06-28,0.041000
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2013-07-31,0.042000
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2013-08-30,0.043000
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2013-09-30,0.042000
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2013-10-31,0.044000
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2013-11-29,0.043000
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2013-12-06,0.000000
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2013-12-31,0.044000
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2014-01-31,0.044000
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2014-02-28,0.039000
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2014-03-31,0.043000
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2014-04-30,0.041000
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2014-05-30,0.043000
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2014-06-06,0.000000
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2014-06-30,0.040000
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2014-07-31,0.045000
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2014-08-29,0.042000
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2014-09-30,0.040000
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2014-10-31,0.044000
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2014-11-28,0.042000
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2014-12-05,0.000000
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2014-12-31,0.042000
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2015-01-30,0.041000
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2015-02-27,0.038000
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2015-03-31,0.046000
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2015-04-30,0.049000
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2015-05-29,0.042000
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2015-06-30,0.041000
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2015-07-31,0.042000
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2015-08-31,0.042000
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2015-09-30,0.040000
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2015-10-30,0.047000
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2015-11-30,0.039000
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2015-12-31,0.038000
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2016-01-29,0.033000
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2016-02-29,0.037000
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2016-03-31,0.040000
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2016-04-29,0.038000
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2016-05-31,0.039000
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2016-06-30,0.037000
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2016-07-29,0.039000
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2016-08-31,0.037000
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2016-09-30,0.036000
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2016-10-31,0.037000
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2016-11-30,0.034000
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2016-12-30,0.037000
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2017-01-31,0.037000
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2017-02-28,0.034000
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2017-03-31,0.038000
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2017-04-28,0.035000
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2017-05-31,0.036000
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2017-06-30,0.036000
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2017-07-31,0.036000
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2017-08-31,0.036000
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2017-09-29,0.034000
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2017-10-31,0.036000
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2017-11-30,0.033000
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2017-12-29,0.036000
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2018-01-31,0.036000
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2018-02-28,0.032000
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2018-03-29,0.038000
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2018-04-30,0.034000
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2018-05-31,0.037000
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2018-06-08,0.000000
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2018-06-29,0.039000
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2018-07-31,0.039000
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2018-08-31,0.039000
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2018-09-28,0.037000
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2018-10-31,0.038000
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2018-11-30,0.042000
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2018-12-27,0.015000
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2018-12-31,0.042000
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2019-01-31,0.039000
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2019-02-28,0.035000
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2019-03-29,0.041000
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2019-04-30,0.037000
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2019-05-31,0.040000
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2019-06-28,0.038000
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2019-07-31,0.040000
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2019-08-30,0.039000
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2019-09-30,0.036000
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2019-10-31,0.037000
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2019-11-29,0.036000
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2019-12-31,0.037000
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2020-01-31,0.038000
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2020-02-28,0.035000
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2020-03-31,0.040000
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2020-04-30,0.035000
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2020-05-29,0.037000
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2020-06-30,0.035000
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2020-07-31,0.033000
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2020-08-31,0.033000
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2020-09-30,0.034000
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2020-10-30,0.034000
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2020-11-30,0.032000
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2020-12-23,0.003000
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2020-12-31,0.033000
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2021-01-29,0.032000
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2021-02-26,0.030000
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2021-03-31,0.032000
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2021-04-30,0.031000
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2021-05-28,0.030000
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2021-06-30,0.031000
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2021-07-30,0.031000
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2021-08-31,0.031000
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2021-09-30,0.030000
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2021-10-29,0.032000
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2021-11-30,0.031000
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2021-12-22,0.030000
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2021-12-31,0.032000
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2022-01-31,0.032000
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2022-02-28,0.028000
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