For the current week, the overall ratings of three diversified telecommunication services stocks are worse, according to the Portfolio Graderdatabase. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

inContact, Inc. (SAAS) is on the decline this week, earning a D (“sell”) after receiving a C (“hold”) last week. inContact provides cloud-based contact center software services and network connectivity in the United States. In Portfolio Grader’s specific subcategories of Earnings Revisions and Equity, SAAS also gets F’s. For a full analysis of SAAS stock, visit Portfolio Grader.

KT Corporation Sponsored ADR (KT) ratings are on the decline this week as the company earns an F (“strong sell”). Last week, it received a D (“sell”). KT provides telecommunication services including local, long distance, and international calling, satellite communication, data transmission, and wireless telephone services in South Korea. The stock receives F’s in Earnings Growth, Earnings Momentum, Earnings Revisions and Margin Growth. Shares of the stock have been changing hands at an unusually rapid pace, twice the rate of the week prior. To get an in-depth look at KT, get Portfolio Grader’s complete analysis of KT stock.

Premiere Global Services, Inc. (PGI) earns a D this week, falling from last week’s grade of C. Premiere Global Services is a global provider of conferencing and collaboration services. The stock also rates an F in Earnings Momentum. The trailing PE Ratio for the stock is 36.80. For more information, get Portfolio Grader’s complete analysis of PGI 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.