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).
104 lines
2.0 KiB
Plaintext
104 lines
2.0 KiB
Plaintext
Date,Dividends
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2012-03-15,0.003000
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2012-04-16,0.004000
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2012-05-15,0.005000
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2012-06-15,0.002000
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2012-07-16,0.002000
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2012-08-15,0.002000
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2012-11-15,0.002000
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2012-12-13,0.005000
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2013-07-15,0.004000
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2013-08-15,0.003000
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2013-09-16,0.007000
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2013-11-15,0.009000
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2013-12-13,0.071000
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2014-01-15,0.004000
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2014-02-18,0.008000
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2014-03-17,0.003000
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2014-04-15,0.013000
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2014-05-15,0.005000
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2014-06-13,0.011000
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2014-07-15,0.009000
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2014-08-15,0.012000
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2014-09-15,0.009000
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2014-10-15,0.011000
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2014-11-17,0.008000
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2014-12-15,1.103000
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2015-01-15,0.008000
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2015-02-17,0.012000
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2015-03-13,0.018000
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2015-04-15,0.017000
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2015-05-15,0.026000
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2015-06-15,0.021000
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2015-07-15,0.025000
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2015-08-14,0.013000
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2015-09-15,0.017000
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2015-10-15,0.017000
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2015-11-13,0.011000
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2015-12-15,0.698000
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2016-01-15,0.002000
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2016-03-15,0.013000
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2016-04-15,0.011000
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2016-05-13,0.011000
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2016-06-15,0.012000
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2016-07-15,0.037000
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2016-08-15,0.010000
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2016-09-15,0.020000
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2016-10-14,0.022000
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2016-11-15,0.001000
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2016-12-22,0.517000
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2017-01-17,0.030000
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2017-02-15,0.007000
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2017-03-15,0.007000
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2017-04-17,0.007000
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2017-05-15,0.008000
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2017-06-15,0.028000
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2017-08-15,0.017000
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2017-09-15,0.005000
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2017-10-16,0.011000
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2017-11-15,0.011000
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2017-12-20,0.011000
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2018-01-16,0.010000
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2018-02-15,0.010000
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2018-03-15,0.010000
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2018-04-16,0.010000
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2018-05-15,0.013000
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2018-06-15,0.012000
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2018-07-16,0.004000
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2018-08-15,0.006000
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2018-09-17,0.008000
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2018-10-15,0.005000
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2018-11-15,0.008000
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2018-12-19,0.355000
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2019-02-15,0.009000
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2019-03-15,0.011000
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2019-04-15,0.009000
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2019-05-15,0.020000
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2019-06-17,0.017000
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2019-07-15,0.009000
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2019-08-15,0.009000
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2019-09-16,0.009000
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2019-10-15,0.011000
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2019-11-15,0.009000
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2019-12-17,0.016000
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2020-01-15,0.002000
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2020-02-14,0.007000
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2020-03-16,0.009000
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2020-04-15,0.009000
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2020-05-15,0.004000
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2020-06-15,0.008000
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2020-07-15,0.008000
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2020-08-17,0.014000
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2020-09-15,0.016000
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2020-10-15,0.018000
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2020-11-16,0.018000
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2020-12-17,0.040000
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2021-01-15,0.005000
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2021-03-15,0.001000
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2021-04-15,0.001000
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2021-05-17,0.001000
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2021-09-15,0.038000
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2021-10-15,0.038000
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2021-11-15,0.038000
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2021-12-15,0.605000
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