• Price-earnings (P/E) ratio: The P/E ratio is a firm's stock price divided by earnings
per share.

• Price-sales (P/S) ratio: The P/S ratio is a firm's stock price divided by sales per share.

• Price-book value (P/B) ratio: The P/B ratio is a firm's stock price divided by book
value of equity per share.

• Price-cash flow (P/CF) ratio: The P/CF ratio is a firm's stock price divided by cash
flow per share, where cash flow may be defined as operating cash flow or free cash
flow.