Value investing is a strategy that looks to determine if the market has undervalued a stock, and there are many metrics that can help you discover these opportunities. There are two key categories of metrics that are used in value investing.

On a typical trading day, value investors should own 30 to 50 stocks if the market is not overheated or undervalued. However, value investors never have a quota on the number of stocks they must own.

Value investing and growth investing both look at the company fundamentals to determine if the company should be bought. This is in contrast with momentum investing and technical analysis, which are indifferent to the underlying asset.