Centrus Energy (LEU 5.27%) attracted the right kind of energy on the stock exchange Friday. The company's shares closed that session 5% higher, after it published news of an important contract renewal. That pop looked particularly impressive when matched against the S&P 500's (^GSPC -0.22%) trajectory, which dipped into the red with a 0.2% decline.An energetic extensionBefore market open that morning, Centrus divulged that the U.S. Department of Energy (DoE) exercised its option to extend the company's cont ...