Reuters.com Stocks Information
This site provides financial ratios of industries in addition to market news and company and industry figures. To find industry ratios, enter the stock symbol of a public company. You will then go to a summary page about that company. If you then select (on the left side) "Comparison," you will get comparisons of some of the company's financial performance ratios against the industry. Registration is required to use the site but registration is free.
via URL