The followng three defense stocks are to be combined into a stock Index In January $2019($perhaps a portfollo manager belleves these stocks are an approprlate benchmark for his or her performance$).$ Suppose that Douglas McDonnell shareholders approve a $3-$for$-1$ stock split on January $1,2020.$

$\backslash$table$[[,,$Price$],[,$Shares,,,$],[$Douglas McDonnell,$($millions$),\frac{1}{1}\frac{?}{19},\frac{1}{1}\frac{?}{20},\frac{1}{1}\frac{?}{21}$