NEW YORK ( TheStreet ) -- Shares of Advanced Analogic Technologies (Nasdaq: AATI ) were gapping up Friday morning with an open price 54.6% higher than Thursday's closing price. The stock closed at $3.90 Thursday and opened today's trading at $6.03. The average volume for Advanced Analogic has been 173,500 shares per day over the past 30 days. Advanced Analogic has a market cap of $164.5 million and is part of the technology sector and electronics industry. Shares are down 2.7% year to date as of the close of trading on Thursday. Advanced Analogic Technologies, Inc. engages in the development of advanced power management semiconductors. It offers a range of analog and mixed-signal circuits that are used in system design. TheStreet Ratings rates Advanced Analogic as a hold.