Benzinga's Top #PreMarket Gainers

gained 32.68 percent to $63.50 in pre-market trading after

announced its plans to acquire AGL Resources in a $12 billion deal.

shares climbed 1.23 percent to $25.50 in pre-market trading after gaining 0.52 percent on Friday.

shares rose 0.99 percent to $2.04 in pre-market trading after gaining 1.00 percent on Friday.

shares rose 0.85 percent to $5.96 in pre-market trading. Stifel Nicolaus upgraded Tuesday Morning from Hold to Buy and announced a price target of $9.00.

shares rose 0.74 percent to $46.14 in pre-market trading after the company announced its plans to acquire AGL Resources in a $12 billion deal.