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

SunCoke Energy, Inc. (SXC) in addition to mining and producing coal in the Americas, offers metallurgical and thermal coal used in steelmaking facilities. The company also gets F’s in earnings revisions and earnings surprise. For more information, get Portfolio Grader’s complete analysis of SXC stock.

Newpark Resources, Inc. (NR) provides environmental services to the oil and gas exploration and production industry, primarily in the Gulf Coast market. The company also gets F’s in sales growth, operating margin growth, earnings growth, earnings revisions, earnings surprise, and earnings momentum. For more information, get Portfolio Grader’s complete analysis of NR stock.

SBA Communications Corporation (SBAC) owns and operates wireless communications infrastructure in the United States. The company also gets F’s in earnings revisions and earnings momentum. For more information, get Portfolio Grader’s complete analysis of SBAC stock.

Broadwind Energy, Inc. (BWEN) manufactures, installs and maintains components for energy and infrastructure-related industries with a focus on the wind energy sector. The company also gets F’s in earnings revisions and earnings surprise. For more information, get Portfolio Grader’s complete analysis of BWEN stock.

Black Diamond, Inc. (BDE) provides outdoor recreation equipment and active lifestyle products. The company also gets F’s in earnings revisions and earnings momentum. For more information, get Portfolio Grader’s complete analysis of BDE 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.