Different sources define value investing differently. Some say value investing is the investment philosophy that favors the purchase of stocks that are currently selling at low price-to-book ratios and have high dividend yields. Others say value investing is all about buying stocks with low P/E ratios. You will even sometimes hear that value investing has more to do with the balance sheet than the income statement.
In his 1992 letter to Berkshire Hathaway shareholders, Warren Buffet wrote:
We think the very term "value investing" is redundant. What is "investing" if it is not the act of seeking value at least sufficient to justify the amount paid? Consciously paying more for a stock than its calculated value - in the hope that it can soon be sold for a still-higher price - should be labeled speculation (which is neither illegal, immoral nor - in our view - financially fattening).
Whether appropriate or not, the term "value investing" is widely used. Typically, it connotes the purchase of stocks having attributes such as a low ratio of price to book value, a low price-earnings ratio, or a high dividend yield. Unfortunately, such characteristics, even if they appear in combination, are far from determinative as to whether an investor is indeed buying something for what it is worth and is therefore truly operating on the principle of obtaining value in his investments. Correspondingly, opposite characteristics - a high ratio of price to book value, a high price-earnings ratio, and a low dividend yield - are in no way inconsistent with a "value" purchase.
Buffett’s definition of “investing