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

This week, TELUS Corporation (TU) is showing significant improvement as the company’s rating hops from a C (“hold”) to a B (“buy”). Telus is a telecommunications company that offers products and services in Canada. In Portfolio Grader’s specific subcategory of Equity, TU also gets an A. For more information, get Portfolio Grader’s complete analysis of TU stock.

CenturyLink, Inc. (CTL) is progressing from last week’s rating of B (“buy”) as the company improves to an A (“strong buy”) this week. CenturyLink is an integrated communications company engaged mainly in providing communications services, Internet and broadband services. The stock has a dividend yield of 2.2%. For more information, get Portfolio Grader’s complete analysis of CTL stock.

This is a strong week for KT Corporation Sponsored ADR (KT). The company’s rating climbs to B from the previous week’s C. KT provides telecommunication services including local, long distance, and international calling, satellite communication, data transmission, and wireless telephone services in South Korea. For more information, get Portfolio Grader’s complete analysis of KT stock.

This week, Telecom Argentina SA Sponsored ADR’s (TEO) ratings are up from a C last week to a B. Telecom Argentina is a provider of integrated communications that offers fixed and mobile telecommunication services. For more information, get Portfolio Grader’s complete analysis of TEO stock.

Telefonica Brasil S.A. Sponsored ADR Pfd (VIV) improves from a C to a B rating this week. Telefonica Brasil is a telecommunications company which provides services for fixed and mobile telephony, data transmission and VAS, pay TV, among others. For more information, get Portfolio Grader’s complete analysis of VIV stock.

Chunghwa Telecom Co., Ltd Sponsored ADR’s (CHT) ratings are looking better this week, moving up to a B from last week’s C. Chunghwa Telecom is a telecommunications service provider that offers fixed line services, cellular services, and Internet and data services in Taiwan and Asia. For more information, get Portfolio Grader’s complete analysis of CHT 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.