Links
Investors Business Daily: Great Site to check out the latest information on an hourly basis with the markets. Also shows big volume movements from institutional buying. Excellent resource for avid investors.
Yahoo Finance: All your comprehensive needs for stocks and investment related news, quotes, information, etc. You can also create portfolios and manage actual accounts with it as well.
Bigcharts.com: This is my personal free stock charting utility. This allows you to create in depth, customized java charts and it even allows you to zoom in.
Weekly Market Watch: This is an amazing site that shows weekly indicators and important events that may affect the stock market. I highly recommend this site for any active investor.