Download the Complete Report Here By Karen Roman The ONE Group Hospitality, Inc. (NASDAQ: STKS) said improving traffic trends and cost synergies from Benihana are helping stabilize performance as the company continues to close underperforming restaurants and streamline its portfolio. Company-owned restaurant cost of sales declined to 19.6% of revenue, while restaurant operating margins edged higher despite lower sales. The company also reported record Valentine’s Day performance and said beef pricing has ...