The grades of four 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”).

This week, T-Mobile US, Inc. (TMUS) is showing good progress as the company’s rating jumps from a B (“buy”) last week to an A (“strong buy”). T-Mobile offers mobile communications services under the T-Mobile brands in the United States, Puerto Rico, and the U.S. Virgin Islands. The stock price has been on the rise for the past 11 days, reaching $26.06. For more information, get Portfolio Grader’s complete analysis of TMUS stock.

Turkcell Iletisim Hizmetleri A.S. Sponsored ADR’s (TKC) grade is moving up to a B (“buy”) this week from last week’s C (“hold”). Turkcell provides mobile services in Turkey. Shares of TKC have increased 5.1% 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 (SBAC) earns an A this week, jumping up from last week’s grade of B. 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 Company (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. 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.