Shares of SandRidge (NYSE: SD) are down sharply today after Chesapeake Energy (OTC:CHKA.Q) sold off its Mississippian assets for less than analysts had expected: $1.02 billion for 425 thousand acres, or $2,400 per acre. SandRidge is now largely levered to the Mississippian after selling off its Permian assets and concentrating in the Mississippian region. In this video, Motley Fool energy analyst Joel South tells investors why this deal may have spooked SandRidge investors a bit too far, why the company may now be oversold on this market reaction, and why now may be a good time to buy.