Digital Turbine (APPS 51.77%) stock is soaring higher in Tuesday's trading. The advertising technology company's share price was up 49.7% as of 11 a.m. ET amid the backdrop of a 0.3% decline for the S&P 500 (^GSPC -0.37%).After yesterday's market close, Digital Turbine published results for the fourth quarter of its last fiscal year, which ended March 31. In addition to posting quarterly sales and earnings that beat the market's expectations, the company also issued strong forward performance guidance. Digi ...