NEW YORK ( TheStreet) -- Shares of Kona Grill (Nasdaq: KONA) have taken a tremendous swing upward. The stock is trading at $6.40 as of 9:31 a.m. ET, 21.7% above Monday's closing price of $5.26. Volume is at 17,048, 0.3 times the daily average of 65,800. Kona Grill has a market cap of $47.7 million and is part of the services sector and leisure industry. Shares are up 28.3% year to date as of the close of trading on Monday. Kona Grill, Inc. owns and operates upscale casual dining restaurants in the United States. The company operates its restaurants under the 'Kona Grill' name. TheStreet Ratings rates Kona Grill as a hold. The company's strengths can be seen in multiple areas, such as its revenue growth, solid stock price performance and impressive record of earnings per share growth. However, as a counter to these strengths, we find that the company's profit margins have been poor overall. You can view the full Kona Grill Ratings Report. See our top % gaining stocks list for other stocks that are soaring today, or get investment ideas from our investment research center. Interested in other stocks that are soaring? Get free SMS text alerts sent to you when the action happens by texting SOAR to 95370 or select from multiple alert options.