These are useful links:
Google finance:Google finance offers a broad range of information about stocks, mutual funds, public and private companies.Each day, you'll find a variety of videos from leading news organizations on the Google Finance homepage.You can stay up-to-date on the markets with the google finance, and also you can find stock information and market chart about companies.
CNBC:Find the latest stock market news, information & headlines. Get up to date business news as well as stock market, financial & earnings news online. and also find markets
and economy, market front and latest investing news on CNBC website.