The grades of three Wireless Telecom stocks are better this week, according to the Portfolio Grader database. Every one of these stocks has an “A” (“strong buy”) or “B” overall (“buy”) rating.

Turkcell Iletisim Hizmetleri A.S. ADR (NYSE:TKC) is making progress this week as its rating of C (“hold”) from last week increases to a B (“buy”) rating this week. 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 9.4% over the past month, better than the 4.8% increase the S&P 500 has seen over the same period of time. For more information, get Portfolio Grader’s complete analysis of TKC stock.

This week, SBA Communications (NASDAQ:SBAC) is showing good progress as the company’s rating jumps from a B (“buy”) last week to an A (“strong buy”). SBA Communications owns and operates wireless communications infrastructure in the United States. For more information, get Portfolio Grader’s complete analysis of SBAC stock.

Shenandoah Telecommunications (NASDAQ:SHEN) gets a higher grade this week, advancing from a C last week to a B. Shenandoah Telecommunications provides telephone and wireless personal communications services under the Sprint brand name. Investors have pushed the stock price up 11.2% 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.