For the current week, the overall ratings of three software stocks are worse, according to the Portfolio Graderdatabase. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

This week, SRS Labs (SRSL) falls to a D (“sell”), worse than last week’s grade of C (“hold”). SRS Labs develops and licenses audio and voice enhancement technologies. In Portfolio Grader’s specific subcategories of Earnings Growth and Margin Growth, SRSL also gets F’s. To get an in-depth look at SRSL, get Portfolio Grader’s complete analysis of SRSL stock.

TeleNav, Inc. (TNAV) earns an F (“strong sell”) this week, moving down from last week’s grade of D (“sell”). TeleNav provides personalized mobile navigation service in the United States and internationally. The stock gets F’s in Earnings Growth and Margin Growth. The trailing PE Ratio for the stock is 26.20. For more information, get Portfolio Grader’s complete analysis of TNAV stock.

ANSYS, Inc. (ANSS) earns a D this week, moving down from last week’s grade of C. Ansys develops and markets engineering simulation software and technologies used by engineers and designers working in fields such as aerospace, electronics, biomedical, energy, and defense. The stock’s trailing PE Ratio is 36.80. For a full analysis of ANSS stock, visit Portfolio Grader.

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.