The ratings of 9 Machinery stocks are down this week, according to the Portfolio Grader database. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

WABCO Holdings Inc. (WBC) declines this week from a C to a D. WABCO Holdings Inc. manufactures and sells control systems, including advanced braking, stability, suspension, transmission control and air compressing and processing systems, that improve vehicle performance and safety and reduce overall vehicle operating costs. For more information, get Portfolio Grader’s complete analysis of WBC stock.

This is a rough week for Standex International Corporation (SXI). The company’s rating falls to D from the previous week’s C. Standex International Corporation manufactures a variety of products and services for various industrial market segments. For more information, get Portfolio Grader’s complete analysis of SXI stock.

Flowserve Corporation (FLS) slips from a C to a D this week. Flowserve Corporation designs, manufactures, distributes, and services industrial flow management equipment throughout the world. The company also gets F’s in sales growth, earnings growth, earnings surprise, and earnings momentum. For more information, get Portfolio Grader’s complete analysis of FLS stock.

American Railcar Industries, Inc. (ARII) is having a tough week. The company’s rating falls from a D to a F. American Railcar Industries, Inc. designs, manufactures, and sells hopper and tank railcars in North America. The company also gets F’s in sales growth and earnings momentum. For more information, get Portfolio Grader’s complete analysis of ARII stock.

Greenbrier Companies, Inc. (GBX) gets weaker ratings this week as last week’s C drops to a D. Greenbrier Companies, Inc. supplies transportation equipment and services to the railroad and related industries. The company also gets F’s in sales growth and earnings momentum. For more information, get Portfolio Grader’s complete analysis of GBX stock.

Hurco Companies, Inc.’s (HURC) rating weakens this week, dropping to a D versus last week’s C. Hurco Companies, Inc. designs and produces interactive computer controls, software, and computerized machine systems for the worldwide metal cutting and metal forming industry. For more information, get Portfolio Grader’s complete analysis of HURC stock.

Gorman-Rupp Company (GRC) experiences a ratings drop this week, going from last week’s C to a D. Gorman-Rupp Company designs, manufactures, and sells pumps and related fluid control equipment. For more information, get Portfolio Grader’s complete analysis of GRC stock.

This week, Milacron Holdings Corp. (MCRN) drops from a C to a D rating. For more information, get Portfolio Grader’s complete analysis of MCRN stock.

This week, Taylor Devices, Inc.’s (TAYD) rating worsens to a D from the company’s C rating a week ago. Taylor Devices, Inc. is engaged in the design, development, manufacture and marketing of shock absorption, rate control, and energy storage devices for use in various types of machinery, equipment and structures. The company also gets F’s in sales growth, earnings growth, and earnings momentum. For more information, get Portfolio Grader’s complete analysis of TAYD 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.