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

Great Basin Scientific, Inc.. The company also gets F’s in earnings growth. For more information, get Portfolio Grader’s complete analysis of GBSN stock.

DryShips Inc. (DRYS) is the owner and operator of a drybulk fleet. The company also gets F’s in sales growth, earnings growth, earnings revisions, and earnings momentum. For more information, get Portfolio Grader’s complete analysis of DRYS stock.

Halcon Resources Corporation (HK) an independent energy company, engages in the acquisition, production, exploration, and development of onshore oil and natural gas properties in the United States. The company also gets F’s in sales growth, operating margin growth, earnings growth, and earnings momentum. For more information, get Portfolio Grader’s complete analysis of HK stock.

Intelsat S.A.. The company also gets F’s in operating margin growth, earnings growth, earnings revisions, earnings surprise, and earnings momentum. For more information, get Portfolio Grader’s complete analysis of I stock.

J.G. Wentworth Company Class A. 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 JGW 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.