EX. stock file is
Date Capacity Turnover Open High Low Close Change Transaction
2018-04-02, 547169, 9215358, 16.8, 16.95, 16.7, 16.9, 0.3, 30
...
2018-07-31, 3335396, 57104251, 17.15, 17.65, 16.55, 16.6, 0.4, 1634
empty line
file end