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

Hurco Companies, Inc. (HURC) earns an F (“strong sell”) this week, moving down from last week’s grade of D (“sell”). Hurco Companies designs and produces interactive computer controls, software, and computerized machine systems for the worldwide metal cutting and metal forming industry. Shares of the stock have been exchanging at an usually rapid pace, twice the rate of the week prior. To get an in-depth look at HURC, get Portfolio Grader’s complete analysis of HURC stock.

Kaydon Corporation (KDN) gets weaker ratings this week as last week’s D drops to an F. Kaydon designs, manufactures, and sells custom-engineered products for a variety of industries, including aerospace, defense, and industrial. The stock gets F’s in Earnings Growth, Earnings Momentum, Cash Flow and Margin Growth. The stock has a trailing PE Ratio of 37.20. For more information, get Portfolio Grader’s complete analysis of KDN stock.

This is a rough week for Valmont Industries, Inc. (VMI). The company’s rating falls to F from the previous week’s D. Valmont Industries manufactures fabricated metal products and mechanized irrigation systems. As of Dec. 5, 2014, 21.8% of outstanding Valmont Industries, Inc. shares were held short. To get an in-depth look at VMI, get Portfolio Grader’s complete analysis of VMI stock.

This week, TriMas Corporation (TRS) falls to a D (“sell”), worse than last week’s grade of C (“hold”). TriMas manufactures trailer products, recreational accessories, packaging systems, energy products and industrial specialty products for the commercial, manufacturing, and consumer markets. The stock also gets an F in Earnings Surprise. For more information, get Portfolio Grader’s complete analysis of TRS stock.

Stanley Black & Decker, Inc. (SWK) experiences a ratings drop this week, going from last week’s C to a D. Stanley Black & Decker is a worldwide supplier of tools and engineered solutions for professional, industrial, construction and do-it-yourself use. Shares of the stock have been trading at an exceptionally rapid pace, up twofold from the week prior. To get an in-depth look at SWK, get Portfolio Grader’s complete analysis of SWK stock.