NEW YORK ( TheStreet) -- Silicon Image Incorporated (Nasdaq: SIMG) is trading at unusually high volume Wednesday with 7.2 million shares changing hands. It is currently at 5.5 times its average daily volume and trading up $1.83 (+23%) at $9.80 as of 2:27 p.m. ET. Silicon Image has a market cap of $628.7 million and is part of the technology sector and electronics industry. Shares are up 8.4% year to date as of the close of trading on Tuesday. Silicon Image, Inc. engages in the design, development, and implementation of semiconductors and intellectual property (IP) solutions for the storage, distribution, and presentation of high-definition content in home and mobile environments worldwide. The company has a P/E ratio of 80.4, equal to the average electronics industry P/E ratio and above the S&P 500 P/E ratio of 21.9. TheStreet Ratings rates Silicon Image as a hold. The company's strengths can be seen in multiple areas, such as its robust revenue growth, largely solid financial position with reasonable debt levels by most measures and impressive record of earnings per share growth. However, as a counter to these strengths, we find that the company's return on equity has been disappointing. You can view the full Silicon Image Ratings Report. See all heavy volume stocks in our stocks moving on unusual volume list or get investment ideas from our investment research center.