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

Fluor Corporation (FLR) is on the decline this week, earning a D (“sell”) after receiving a C (“hold”) last week. 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. The stock’s trailing PE Ratio is 25.40. For a full analysis of FLR stock, visit Portfolio Grader.

Foster Wheeler (FWLT) earns a D this week, moving down from last week’s grade of C. Foster Wheeler provides design, engineering, construction, manufacturing, project development and management, research, plant operations, and environmental services. The stock also rates an F in Sales Growth. For more information, get Portfolio Grader’s complete analysis of FWLT stock.

Slipping from a C to a D rating, Sterling Construction Company, Inc. (STRL) takes a hit this week. Sterling Instruction Company is a heavy civil construction company that specializes in the building, reconstruction and repair of transportation and water infrastructure. The stock gets F’s in Earnings Growth, Earnings Revisions and Earnings Surprise. Equity, Cash Flow and Margin Growth also get F’s. To get an in-depth look at STRL, 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.