Shares of AdvancedPierre Foods Holidngs Inc (NYSE: APFH) were surging today after it agreed to be sold to Tyson Foods (NYSE: TSN) for about $3.2 billion in cash. Shares of AdvancedPierre were up 9.8% as of 11:07 a.m. while Tyson stock was essentially unchanged.Tyson offered $40.25, a 9.8% premium over its closing price yesterday, to take over the maker of packaged sandwiches and similar products.