Shares of Red Robin Gourmet Burgers (NASDAQ: RRGB) rallied Tuesday after earnings skyrocketed 39%, according to a recent earnings report. In premarket, shares soared 8.3%, hitting $79. Profits for the first financial quarter of 2015 rose to $16.6 million at $1.16 earnings per share, MarketWatch reported. These rising numbers prompted the burger chain to raise both their capital spending revenue growth outlook to $170 million and 12.5%, respectively. Red Robin announced the earnings were primarily sparked by an increased number of customers eating at restaurants, as well as higher check values. For more business and financial news, click here.