Cummins is Best Performing S&P 500 Stock

Cummins Inc. surged more than 140% to beat out credit-crisis comeback stories such as AIG and hot tech companies such as Akamai Technologies and Priceline.com to become the best performing stock in the S&P 500. The maker of diesel engines, fuel systems and emission controls based in Columbus, Ind., benefited from an expansion into overseas markets such as China and India. The next biggest movers in the U.S. benchmark were Qwest and AIG, whose shares posted gains of more than 90%. (More at CNBC.com . . . )