This week, 3 Construction & Engineering stocks are improving their overall rating on Portfolio Grader. Each of these rates an “A” (“strong buy”) or “B” overall (“buy”).

The rating of Granite Construction Incorporated (GVA) moves up this week, rising from a B to a A. Granite Construction Incorporated is a civil contractor in the United States. The company also gets A’s in earnings growth and earnings surprise. For more information, get Portfolio Grader’s complete analysis of GVA stock.

Primoris Services Corporation (PRIM) is seeing ratings go up from a C last week to a B this week. Primoris Services Corporation provides construction, fabrication, maintenance, replacement, and engineering services to public utilities, petrochemical companies, energy companies, municipalities, and other customers. The company also gets A’s in earnings momentum. For more information, get Portfolio Grader’s complete analysis of PRIM stock.

Layne Christensen Company (LAYN) shows solid improvement this week. The company’s rating rises from a C to a B. Layne Christensen Company provides water well drilling, mineral exploration drilling, geotechnical construction, oil and gas services, and related products and services. The company also gets A’s in earnings surprise. For more information, get Portfolio Grader’s complete analysis of LAYN 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.