The PEG ratio (price/earnings to growth) is a better metric to track for companies that are actively growing revenue IMO.
If the P/E is 18 and the expected growth in EPS is 20%, the PEG ratio becomes 18/20 =0.90.
A lower PEG value ( less than 1.0), can indicate that a stock is undervalued compared to its earnings potential growth.
I believe ISX is in this class.
Cheers,
