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

This week, EMCOR Group, Inc. (EME) falls to a D (“sell”), worse than last week’s grade of C (“hold”). EMCOR Group is an electrical and mechanical construction and facilities services company that specializes in providing construction services relating to electrical and mechanical systems, engaging in the design, integration, installation, start-up, operation, and maintenance of various electrical and mechanical systems. EME also rates an F in Portfolio Grader’s specific subcategory of Earnings Surprise. For more information, get Portfolio Grader’s complete analysis of EME stock.

This week, Granite Construction Incorporated’s (GVA) rating worsens to a D from the company’s C rating a week ago. Granite Construction is a civil contractor in the United States. The stock gets F’s in Earnings Surprise and Margin Growth. The stock’s trailing PE Ratio is 56.00. To get an in-depth look at GVA, get Portfolio Grader’s complete analysis of GVA stock.

Quanta Services, Inc. (PWR) ratings are on the decline this week as the company earns an F (“strong sell”). Last week, it received a D (“sell”). Quanta Services provides specialized contracting services to electric utilities, telecommunication and cable television operators, and governmental entities. For more information, get Portfolio Grader’s complete analysis of PWR stock.

Furmanite Corporation’s (FRM) rating weakens this week, dropping to an F versus last week’s D. Furmanite provides worldwide technical services for a broad range of industries. The stock gets F’s in Earnings Growth, Earnings Surprise and Margin Growth. The trailing PE Ratio for the stock is 26.40. To get an in-depth look at FRM, get Portfolio Grader’s complete analysis of FRM stock.

Slipping from a C to a D rating, Comfort Systems USA, Inc. (FIX) takes a hit this week. Comfort Systems provides heating, ventilation, and air conditioning installation, maintenance, repair, and replacement services within the mechanical services industry. The stock gets F’s in Earnings Momentum and Earnings Surprise. The stock has a trailing PE Ratio of 33.30. For more information, get Portfolio Grader’s complete analysis of FIX 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.