This week, the overall grades of 4 Diversified Telecommunication Services stocks are lower, according to the Portfolio Grader database. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

FairPoint Communications, Inc. (FRP) is having a tough week. The company’s rating falls from a C to a D. FairPoint Communications, Inc. provides communications services to residential and business customers. For more information, get Portfolio Grader’s complete analysis of FRP stock.

This is a rough week for China Unicom (Hong Kong) Limited Sponsored ADR (CHU). The company’s rating falls to D from the previous week’s C. China Unicom (Hong Kong) Limited Sponsored ADR provides telecommunications services in the People’s Republic of China. For more information, get Portfolio Grader’s complete analysis of CHU stock.

Telefonica Brasil S.A. Sponsored ADR Pfd’s (VIV) rating weakens this week, dropping to a D versus last week’s C. Telefonica Brasil S.A. Sponsored ADR Pfd 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.

Windstream Holdings, Inc. (WIN) experiences a ratings drop this week, going from last week’s C to a D. Windstream Holdings, Inc. is a company that provides communications and technology solutions, including high-speed Internet access, digital television services, and voice services. The company also gets F’s in earnings surprise and return on equity. For more information, get Portfolio Grader’s complete analysis of WIN 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.