An E&P company—XOG—IPOd yesterday and traded +15% today(!): http://www.wsj.com/articles/first-oil-gas-ipo-in-2-years-is-winner-1476307444 Extraction Oil & Gas Inc., a Denver-based exploration and production company, sold 33.3 million shares late Tuesday for $19 apiece. The shares ended their first day of trading up 15% at $21.85 on Wednesday, valuing the company at about $2.4 billion. The last time a U.S. oil and gas company went public the price of crude was more than double the $50 barrel level where oil has traded this week. Extraction operates on about 224,000 acres in Colorado’s Wattenberg Field…