For the past three years which companies have beaten the S & P 500?

The S&P 500 is down 30% over the past 3 years.  Today, Aug 26, it
closed at just under $950.  3 years ago it was at approximately $1350.

There are well over 2000 publically traded companies on the
NYSE/NASDAQ/AMEX exchanges which have returned better than 0% for the
past three years.

Yahoo! Stock Screener:
http://screen.yahoo.com/stocks.html

Yahoo! Finance Chart for S&P 500 over last 3 years
http://finance.yahoo.com/q?s=^SPB&d=c&k=c1&a=v&p=s&t=3y&l=on&z=l&q=l

Note that Y! Finance doesn't allow you to do a chart for 3 years
normally but you can change the t=2y field in the URL to t=3y to
create a 3 year chart.