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

Midstates Petroleum Company, Inc. (MPO) is an independent exploration and production company. The company also gets F’s in sales growth, earnings growth, earnings surprise, and earnings momentum. For more information, get Portfolio Grader’s complete analysis of MPO stock.

Emerald Oil, Inc. (EOX) is an independent exploration and production oil company focused on developing oil wells. The company also gets F’s in sales growth, earnings growth, and earnings momentum. For more information, get Portfolio Grader’s complete analysis of EOX stock.

Energy XXI Ltd (EXXI) explores for and produces oil and natural gas. 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 EXXI stock.

LinnCo. LLC (LNCO) focuses on the acquisition and development of 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 LNCO stock.

Legacy Reserves LP (LGCY) acquires and explores for oil and natural gas properties in the United States. The company also gets F’s in sales growth, operating margin growth, earnings growth, earnings revisions, and earnings momentum. For more information, get Portfolio Grader’s complete analysis of LGCY 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.