The grades of three Semiconductor stocks are on the rise this week on Portfolio Grader. Each of these stocks is rated an “A” (“strong buy”) or “B” overall (“buy”).

Exar Corp. (NASDAQ:EXAR) is bumping up its rating from a C (“hold”) to a B (“buy”) this week. Exar designs, develops, and markets analog and mixed-signal integrated circuits for use in communications and video and imaging products. In Portfolio Grader’s specific subcategory of Earnings Surprise, EXAR also gets an A. For more information, get Portfolio Grader’s complete analysis of EXAR stock.

Teradyne (NYSE:TER) boosts its rating from a C to a B this week. Teradyne is a designer, manufacturer and global supplier of automatic systems and solutions used to test complex electronics. The stock price has risen 15.6% over the past month, better than the 3.5% increase the S&P 500 has seen over the same period of time. For more information, get Portfolio Grader’s complete analysis of TER stock.

This week, Himax Technologies (NASDAQ:HIMX) pushes up from a C to a B rating. Himax Technologies designs and manufactures integrated circuits. For more information, get Portfolio Grader’s complete analysis of HIMX stock.

Louis Navellier’s proprietary Portfolio Grader stock ranking system assesses roughly 5,000 companies every week based on a number of fundamental and quantitative measures. Stocks are given a letter grade based on their results — with A being “strong buy,” and F being “strong sell.” Explore the tool here.