<https://fintechprofessor.com/2018/12/03/ascol-stata-convert-daily-stock-prices-and-returns-to-weekly-and-monthly/>
<http://schema.org/potentialAction>
<https://fintechprofessor.com/2018/12/03/ascol-stata-convert-daily-stock-prices-and-returns-to-weekly-and-monthly/>