This week, 4 Software stocks are worse, according to the Portfolio Graderdatabase. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

Interactive Intelligence Group, Inc. (ININ) experiences a ratings drop this week, going from last week’s D to a F. Interactive Intelligence Group, Inc. provides software application suites for Voice over Internet Protocol business communications. The company also gets F’s in earnings surprise and return on equity. For more information, get Portfolio Grader’s complete analysis of ININ stock.

This week, PROS Holdings, Inc. (PRO) drops from a D to a F rating. PROS Holdings, Inc. provides software applications and solutions for manufacturing, distribution, services, and travel industries worldwide. The company also gets F’s in sales growth, earnings surprise, return on equity, and free cash flow. For more information, get Portfolio Grader’s complete analysis of PRO stock.

MobileIron, Inc. (MOBL) earns a F this week, moving down from last week’s grade of D. The company also gets F’s in return on equity and free cash flow. For more information, get Portfolio Grader’s complete analysis of MOBL stock.

This week, Top Image Systems Ltd.’s (TISA) rating worsens to a D from the company’s C rating a week ago. Top Image Systems Ltd. develops and markets automated data capture solutions for managing and validating content gathered from customers, trading partners, and employees. The company also gets F’s in earnings revisions and earnings surprise. For more information, get Portfolio Grader’s complete analysis of TISA 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.