US stocks rallied big on Tuesday, even shrugging off North Korea's latest missile test during the trading session. Here's the scoreboard:  Dow: 23,836.71, +255.93, (1.09%) S&P 500: 2,627.04, +25.62, (0.98%) Nasdaq: 6,912.36, +33.84, (0.49%) Roark Capital Group, the owner of Arby's and Cinnabon, has agreed to buy Buffalo Wild Wings for about $2.9 billion. The private-equity firm will pay $157 a share in cash for Buffalo Wild Wings, which is 34% above the company's closing stock price on November 13, the day before Roark's initial bid of $150 a share.