This week, these five stocks have the worst ratings in Earnings Growth, one of the eight Fundamental Categories on Portfolio Grader.

BlackBerry Limited (BBRY) engages in the design, manufacture, and marketing of wireless solutions worldwide. BBRY gets F’s in Earnings Momentum, Analyst Earnings Revisions, Equity, Cash Flow and Sales Growth as well. For more information, get Portfolio Grader’s complete analysis of BBRY stock.

Transcontinental Realty Investors, Inc. (TCI) is a real estate company that owns a variety of properties located across the United States. TCI gets F’s in Earnings Momentum, Equity and Cash Flow as well. For more information, get Portfolio Grader’s complete analysis of TCI stock.

Quiksilver, Inc. (ZQK) is an outdoor sports lifestyle company, which designs, produces and distributes a diversified mix of branded apparel, footwear, accessories, snowboards and related products. ZQK also gets F’s in Earnings Momentum, Analyst Earnings Revisions, Equity and Sales Growth. Shares of the stock have declined 15.1% since January 1. This is worse than the S&P 500, which has remained flat. For more information, get Portfolio Grader’s complete analysis of ZQK stock.

MGP Ingredients, Inc. (MGPI) produces and markets ingredients and distillery products. MGPI also gets an F in Equity. For more information, get Portfolio Grader’s complete analysis of MGPI stock.

GT Advanced Technologies (GTAT) manufactures solar power equipment. GTAT gets F’s in Equity, Cash Flow, Operating Margin Growth and Sales Growth as well. For more information, get Portfolio Grader’s complete analysis of GTAT 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.