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

Hatteras Financial (HTS) is a mortgage real estate investment trust. HTS also gets F’s in Earnings Growth, Earnings Momentum, Equity, Cash Flow and Operating Margin Growth. For more information, get Portfolio Grader’s complete analysis of HTS stock.

AG Mortgage Investment Trust, Inc. (MITT) focuses on investing, acquiring and managing a portfolio of residential mortgage assets, and other real estate-related securities and financial assets. MITT gets F’s in Earnings Growth, Earnings Momentum, Earnings Surprises, Equity, Cash Flow and Operating Margin Growth as well. For more information, get Portfolio Grader’s complete analysis of MITT stock.

For more information, get Portfolio Grader’s complete analysis of LPCN stock.

MannKind Corporation (MNKD) is a biopharmaceutical company focused on the development and commercialization of therapeutic products for diseases such as diabetes, cancer, inflammatory and autoimmune diseases. MNKD also gets F’s in Analyst Earnings Revisions and Cash Flow. Since January 1, MNKD has fallen 4%. This is worse than the Nasdaq, which has remained flat. For more information, get Portfolio Grader’s complete analysis of MNKD stock.

Uranium Energy (UEC) is an exploration-stage company that explores and develops mineral properties in the United States and Paraguay. UEC gets F’s in Analyst Earnings Revisions, Equity and Cash Flow as well. Shares of the stock have declined 27.8% since January 1. For more information, get Portfolio Grader’s complete analysis of UEC 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.