PEG ratio

PEG ratio = ( P/E ratio) / annual eps growth

a ratio used to determine a stock's value while taking into account earning growth.
similar to the P/E ratio, a low PEG means that the stock is more undervalued.

參考來源： 以PEG ratio評估各國股市之價值 @ USA Stock．美股投資部落格 (在「Google 網頁註解」中檢視)