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

Turkcell Iletisim Hizmetleri A.S. Sponsored ADR’s (NYSE:TKC) grade is moving up to a B (“buy”) this week from last week’s C (“hold”). Turkcell provides mobile services in Turkey. In Portfolio Grader’s specific subcategories of Earnings Revisions, Cash Flow, and Margin Growth, TKC also gets A’s. Shares of TKC have increased 11.8% over the past month, better than the 1.7% decrease the S&P 500 has seen over the same period of time. For more information, get Portfolio Grader’s complete analysis of TKC stock.

SBA Communications Corporation (NASDAQ:SBAC) is making headway this week, with the company’s rating improving to an A (“strong buy”) from a B (“buy”) last week. SBA Communications owns and operates wireless communications infrastructure in the United States. Wall Street has pushed the stock higher by 8.8% over the past month. For more information, get Portfolio Grader’s complete analysis of SBAC stock.

Shenandoah Telecommunications Company’s (NASDAQ:SHEN) ratings are looking better this week, moving up to a B from last week’s C. Shenandoah Telecommunications provides telephone and wireless personal communications services under the Sprint brand name. Investors seem to agree with the upgraded status of the stock, and have pushed the stock up 15.2% over the past month. For more information, get Portfolio Grader’s complete analysis of SHEN 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.