The grades of 3 Diversified Telecommunication Services stocks are on the rise this week on Portfolio Grader. Each of these stocks is rated an “A” (“strong buy”) or “B” overall (“buy”).

PT Telekomunikasi Indonesia (Persero) Tbk Sponsored ADR Class B’s (TLK) ratings are looking better this week, moving up to a A from last week’s B. PT Telekomunikasi Indonesia (Persero) Tbk Sponsored ADR Class B offers telecommunications services such as fixed-line, mobile, interconnection, network, data and Internet services. The company also gets A’s in return on equity. For more information, get Portfolio Grader’s complete analysis of TLK stock.

The rating of KT Corporation Sponsored ADR (KT) moves up this week, rising from a C to a B. KT Corporation Sponsored ADR provides telecommunication services including local, long distance, and international calling, satellite communication, data transmission, and wireless telephone services in South Korea. The company also gets A’s in earnings growth, earnings revisions, and free cash flow. For more information, get Portfolio Grader’s complete analysis of KT stock.

This week, Globalstar, Inc.’s (GSAT) ratings are up from a C last week to a B. Globalstar, Inc. is a provider of mobile voice and data communications services via satellite. The company also gets A’s in return on equity and free cash flow. For more information, get Portfolio Grader’s complete analysis of GSAT 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.