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 (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 has a trailing PE Ratio of 25.90. For a full analysis of FLR stock, visit Portfolio Grader.

Foster Wheeler (FWLT) gets weaker ratings this week as last week’s C drops to a D. Foster Wheeler provides design, engineering, construction, manufacturing, project development and management, research, plant operations, and environmental services. The stock also gets an F in Sales Growth. Shares of the stock are being traded at a very rapid pace, up 838.6% from the week prior. To get an in-depth look at FWLT, get Portfolio Grader’s complete analysis of FWLT stock.

The rating of Sterling Construction Company, Inc. (STRL) declines this week from a 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. 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.