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Is Peter Lynch talking about the Dividend Adjusted PEG Ratio in this quote?
Essentially, yes, Peter Lynch is talking about the PEG Ratio. The Price/Earnings to Growth (PEG) Ratio is where you take the p/e ratio and then divide that by the growth rate (which should include any dividends).  A lower number indicates that the stock is undervalued, and could be a good buy. Lynch's metric is the inverse of that: Growth rate divided by the p/e ratio.  It is the same idea, but in this case, a higher number indicates a good value for buying. In either case, the idea behind this ratio is that a fairly priced stock will have the p/e ratio equal the growth rate.  When your growth rate is larger than your p/e ratio, you are theoretically looking at an undervalued stock.