CBS Corporation (NYSE:CBS) is one of the highest percentage and volume gainer within a few minutes of trading. It currently trades at $10.51, gaining 23% on 2.05 million shares and 6,208 trades. The 52 week trading range for the stock is $0.49 and $12.60. Today, Benchmark analyst says, "We are upgrading CBS to a Buy as the stock appears well positioned to benefit from the improving economic outlook and the eventual recovery in advertising revenues. We also think the Company should benefit from management's growth strategy to continue expanding non-advertising revenues...While network upfront sales came in lower than expected, pricing was stronger than anticipated. CBS held back inventory to take advantage of the emerging opportunities in the scatter market. Scatter market pricing increased sharply and sales pacing improving significantly at television stations as well. We expect sequential quarterly improvement over the course of 2009. Radio picking up rapidly could bolster second half."