5 Things: Shale investment bubble to burst? ... Southwest passes Mylan in S&P rank ... $1M Powerball ticket sold in Braddock ... Dick's Sporting Goods opens new stores ... Maxim Crane wins order

Here are five things to know for Wednesday, May 28, 2014: Shale investment bubble to burst? Exploration and production companies in the Marcellus and other shale plays are accumulating debt at a large rate, according to a Bloomberg study...