This week, the ratings of 3 Machinery stocks on Portfolio Grader are down. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

This is a rough week for Westinghouse Air Brake Technologies Corporation (WAB). The company’s rating falls to D from the previous week’s C. Westinghouse Air Brake Technologies Corporation is a provider of value-added, technology-based products and services for the global rail industry. The company also gets F’s in sales growth. For more information, get Portfolio Grader’s complete analysis of WAB stock.

This week, Gorman-Rupp Company’s (GRC) rating worsens to a D from the company’s C rating a week ago. Gorman-Rupp Company designs, manufactures, and sells pumps and related fluid control equipment. The company also gets F’s in sales growth. For more information, get Portfolio Grader’s complete analysis of GRC stock.

Actuant Corporation Class A (ATU) is having a tough week. The company’s rating falls from a C to a D. Actuant Corporation Class A is a global manufacturer of industrial products and systems for the energy, electrical, engineered solutions, and other industrial markets. The company also gets F’s in sales growth, operating margin growth, and earnings revisions. For more information, get Portfolio Grader’s complete analysis of ATU 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.