NEW YORK ( TheStreet) -- Power-One (Nasdaq: PWER) is trading at unusually high volume Friday with 9.2 million shares changing hands. It is currently at 4.1 times its average daily volume and trading up 79 cents (+17.5%) at $5.31 as of 3:30 p.m. ET. Power-One has a market cap of $510.2 million and is part of the technology sector and electronics industry. Shares are up 15.6% year to date as of the close of trading on Thursday. Power-One, Inc. designs, manufactures, and markets power conversion and power management solutions for the renewable energy (RE), communications infrastructure, and other technology markets. The company has a P/E ratio of 4.4, below the average electronics industry P/E ratio of 4.8 and below the S&P 500 P/E ratio of 17.7. TheStreet Ratings rates Power-One as a hold. The company's strengths can be seen in multiple areas, such as its largely solid financial position with reasonable debt levels by most measures, notable return on equity and attractive valuation levels. However, as a counter to these strengths, we also find weaknesses including poor profit margins, weak operating cash flow and a generally disappointing performance in the stock itself. You can view the full Power-One Ratings Report. See all heavy volume stocks in our stocks moving on unusual volume list or get investment ideas from our investment research center. Interested in other stocks that are rising on unusually high volume? Get free SMS text alerts sent to you when the action happens by texting HVUP to 95370 or select from multiple alert options.