Investors should also note that DG holds a PEG ratio of 2.52. This metric is used similarly to the famous P/E ratio, but the PEG ratio also takes into account the stock's expected earnings growth rate. DG's industry currently sports an average PEG of 3.80. Over the past 52 weeks, DG's PEG has been as high as 2.91 and as low as 1.68, with a median of 2.27. Value investors also frequently use the P/S ratio. This metric is found by dividing a stock's price with the company's revenue. This is a popular metric b ...