On Friday, Blackstone Group (BX) announced that it will acquire Houston-based energy company Dynegy Inc. (DYN) for $4.7 billion (including debt). Under the deal, Blackstone will pay $4.50 per share (a 62% premium on the closing price of $2.78 on August 12) in cash for about 120.6 million outstanding shares of Dynegy. In addition, Dynegy will [...] (BX) Blackstone Group to Acquire Dynegy