The followng three defense stocks are to be combined Into a stock Index In January $2019($perhaps a portfolio manager belleves these stocks are an appropriate benchmark for his or her performance$)$:

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