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

This week, Paccar (NASDAQ:PCAR) falls to a D (“sell”), worse than last week’s grade of C (“hold”). PACCAR designs, develops, manufactures, and distributes light-, medium-, and heavy-duty trucks, and related aftermarket distribution of parts. For Portfolio Grader’s specific subcategory of Sales Growth, PCAR also gets an F. For a full analysis of PCAR stock, visit Portfolio Grader.

Meritor Inc. (NYSE:MTOR) ratings are on the decline this week as the company earns a F (“strong sell”). Last week, it received a D (“sell”). Meritor is a global supplier of drivetrain, mobility, braking and aftermarket solutions for commercial vehicle and industrial markets. The stock gets F’s in Earnings Revisions, Earnings Surprise, and Sales Growth. While the S&P 500 has remained flat over the past month, the stock price has fallen 14.7% over the past month. For more information, get Portfolio Grader’s complete analysis of MTOR stock.

This week, Douglas Dynamics (NYSE:PLOW) drops from a D to a F rating. Douglas Dynamics designs, makes, and sells snow and ice control equipment for light trucks. The stock gets F’s in Earnings Surprise and Sales Growth. To get an in-depth look at PLOW, get Portfolio Grader’s complete analysis of PLOW 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.