This week, three Communications Equipment stocks are improving their overall ratings on Portfolio Grader. Each of these stocks is rated an “A” (“strong buy”) or “B” overall (“buy”).

Motorola Solutions (NYSE:MSI) is bettering its rating of C (“hold”) from last week to a B (“buy”) this week. Motorola Solutions is a data communications and telecommunications equipment provider. In Portfolio Grader’s specific subcategories of Earnings Growth, Earnings Momentum, and Equity, MSI also gets A’s. The stock price has risen 4.5% over the past month, better than the 4.2% decrease the S&P 500 has seen over the same period of time. For more information, get Portfolio Grader’s complete analysis of MSI stock.

Extreme Networks‘s (NASDAQ:EXTR) ratings are looking better this week, moving up to a B from last week’s C. Extreme Networks provides switching solutions for local area networks. For more information, get Portfolio Grader’s complete analysis of EXTR stock.

The rating of Sierra Wireless (NASDAQ:SWIR) moves up this week, rising from a C to a B. Sierra Wireless provides edge wireless solutions for the mobile computing and machine-to-machine markets. Wall Street has pushed the stock higher by 3.8% over the past month. For more information, get Portfolio Grader’s complete analysis of SWIR 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.