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”).

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

This is a rough week for Foster Wheeler (NASDAQ:FWLT). The company’s rating falls to D from the previous week’s 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. For more information, get Portfolio Grader’s complete analysis of FWLT stock.

Sterling Construction (NASDAQ:STRL) earns a D this week, falling from last week’s grade of 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 price has fallen 9.9% over the past month, worse than the 1.3% decrease the Nasdaq has seen over the same period of time. The stock currently has a trailing PE Ratio of 668.60. For a full analysis of STRL stock, visit Portfolio Grader.

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.