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

InnerWorkings, Inc.’s (INWK) rating falls this week to an F (“strong sell”), down from last week’s D (“sell”). InnerWorkings provides print procurement solutions to corporate clients in the United States. In Portfolio Grader’s specific subcategories of Earnings Momentum and Earnings Revisions, INWK also gets F’s. The stock has a trailing PE Ratio of 63.30. For more information, get Portfolio Grader’s complete analysis of INWK stock.

This week, Matthews International Corporation Class A (MATW) falls to a D (“sell”), worse than last week’s grade of C (“hold”). Matthews International is a designer, manufacturer and marketer principally of memorialization products and brand solutions. The stock’s trailing PE Ratio is 35.30. To get an in-depth look at MATW, get Portfolio Grader’s complete analysis of MATW stock.

This week, Waste Management, Inc.’s (WM) rating worsens to a D from the company’s C rating a week ago. Waste Management provides collection, transfer, recycling, disposal and waste-to-energy services. The stock receives F’s in Earnings Growth, Earnings Momentum, Earnings Surprise and Margin Growth. The stock currently has a trailing PE Ratio of 211.60. For more information, get Portfolio Grader’s complete analysis of WM 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.