This week, 4 Construction & Engineering stocks are improving their overall ratings on Portfolio Grader. Each of these stocks is rated an “A” (“strong buy”) or “B” overall (“buy”).

Tutor Perini Corporation (TPC) is seeing ratings go up from a C last week to a B this week. Tutor Perini Corporation is a construction services company. The company also gets A’s in earnings growth, earnings momentum, and free cash flow. For more information, get Portfolio Grader’s complete analysis of TPC stock.

Sterling Construction Company, Inc. (STRL) gets a higher grade this week, advancing from a B last week to a A. Sterling Construction Company, Inc. conducts operations in construction and distribution. The company also gets A’s in earnings momentum. For more information, get Portfolio Grader’s complete analysis of STRL stock.

Orion Group Holdings, Inc. (ORN) shows solid improvement this week. The company’s rating rises from a C to a B. Orion Group Holdings, Inc. operates as a marine specialty contractor serving the heavy civil marine infrastructure market. The company also gets A’s in sales growth and earnings momentum. For more information, get Portfolio Grader’s complete analysis of ORN stock.

Goldfield Corporation (GV) boosts its rating from a B to a A this week. Goldfield Corporation conducts electrical construction operations, including the placement of fiber optic cable and is also engaged in real estate operations. The company also gets A’s in operating margin growth, earnings growth, return on equity, and free cash flow. For more information, get Portfolio Grader’s complete analysis of GV 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.