The overall ratings of three Construction and Engineering stocks are down on Portfolio Grader this week. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

This week, Fluor (NYSE:FLR) falls to a D (“sell”), worse than last week’s grade of C (“hold”). Fluor Corporation provides professional services in the fields of engineering, procurement, construction and maintenance as well as project management services on a global basis. In Portfolio Grader’s specific subcategory of Earnings Growth, FLR also gets an F. For a full analysis of FLR stock, visit Portfolio Grader.

Foster Wheeler (NASDAQ:FWLT) earns a D this week, moving down from last week’s grade of C. Foster Wheeler AG provides design, engineering, construction, manufacturing, project development and management, research, plant operations, and environmental services. The stock also gets an F in Sales Growth.

To get an in-depth look at FWLT, get Portfolio Grader’s complete analysis of FWLT stock.

This is a rough week for Sterling Construction (NASDAQ:STRL). The company’s rating falls to D from the previous week’s C. Sterling Instruction Company is a heavy civil construction company that specializes in the building, reconstruction and repair of transportation and water infrastructure. The stock’s trailing PE Ratio is 723.60. For more information, get Portfolio Grader’s complete analysis of STRL 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.