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).
62 lines
1.0 KiB
Plaintext
62 lines
1.0 KiB
Plaintext
Date,Dividends
|
|
2006-12-15,0.007
|
|
2006-12-28,0.415
|
|
2007-03-30,0.11
|
|
2007-06-29,0.087
|
|
2007-09-28,0.113
|
|
2007-12-14,0.131
|
|
2007-12-28,0.161
|
|
2008-03-31,0.088
|
|
2008-06-30,0.136
|
|
2008-09-30,0.101
|
|
2008-12-30,0.076
|
|
2009-03-31,0.149
|
|
2009-06-30,0.055
|
|
2009-09-30,0.099
|
|
2009-12-30,0.105
|
|
2010-03-31,0.104
|
|
2010-04-30,0.02
|
|
2010-06-30,0.104
|
|
2010-09-30,0.117
|
|
2010-12-30,0.12
|
|
2011-03-31,0.11
|
|
2011-06-30,0.109
|
|
2011-09-30,0.126
|
|
2011-12-29,0.146
|
|
2012-03-30,0.133
|
|
2012-06-29,0.145
|
|
2012-09-28,0.131
|
|
2012-12-28,0.232
|
|
2013-03-28,0.129
|
|
2013-06-28,0.141
|
|
2013-09-30,0.145
|
|
2013-12-13,0.192
|
|
2013-12-30,0.153
|
|
2014-03-31,0.152
|
|
2014-06-30,0.156
|
|
2014-09-30,0.148
|
|
2014-12-15,1.065
|
|
2014-12-30,0.141
|
|
2015-03-31,0.149
|
|
2015-06-30,0.152
|
|
2015-09-30,0.153
|
|
2015-12-15,1.42
|
|
2015-12-30,0.162
|
|
2016-03-31,0.159
|
|
2016-06-30,0.14
|
|
2016-09-30,0.161
|
|
2016-12-29,0.168
|
|
2017-03-31,0.168
|
|
2017-06-30,0.156
|
|
2017-09-29,0.175
|
|
2017-12-15,1.229
|
|
2017-12-28,0.149
|
|
2018-03-29,0.155
|
|
2018-06-29,0.187
|
|
2018-08-22,1.75
|
|
2018-09-28,0.18
|
|
2018-12-17,0.296
|
|
2018-12-28,0.135
|
|
2019-03-29,0.18
|
|
2019-06-28,0.174
|