The overall ratings of five construction and engineering stocks are down on Portfolio Grader this week. 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. In Portfolio Grader’s specific subcategory of Earnings Surprise, EME also gets an F. Shares of the stock are changing hands at twice the rate they were a week ago. To get an in-depth look at EME, 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 has a trailing PE Ratio of 38.70. For more information, get Portfolio Grader’s complete analysis of GVA stock.

Quanta Services, Inc. (PWR) earns an F (“strong sell”) this week, moving down from last week’s grade of D (“sell”). Quanta Services provides specialized contracting services to electric utilities, telecommunication and cable television operators, and governmental entities. Shares of the stock have been changing hands at an unusually rapid pace, twice the rate of the week prior. To get an in-depth look at PWR, get Portfolio Grader’s complete analysis of PWR stock.

This week, Furmanite Corporation (FRM) drops from a D to an F rating. 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 stock currently has a trailing PE Ratio of 30.00. For more information, get Portfolio Grader’s complete analysis of FRM stock.

Comfort Systems USA, Inc. (FIX) is having a tough week. The company’s rating falls from a C to a D. 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 trailing PE Ratio for the stock is 32.40. To get an in-depth look at FIX, 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.