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

Fluor Corporation (NYSE: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. FLR also rates an F in Portfolio Grader’s specific subcategory of Earnings Growth. For a full analysis of FLR stock, visit Portfolio Grader.

Foster Wheeler (NASDAQ:FWLT) gets weaker ratings this week as last week’s C drops to a D. 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. For more information, get Portfolio Grader’s complete analysis of FWLT stock.

Sterling Construction Company, Inc. (NASDAQ:STRL) experiences a ratings drop this week, going from last week’s C to a D. 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.