The grades of three distributors stocks are on the rise this week on Portfolio Grader. Each of these stocks is rated an “A” (“strong buy”) or “B” overall (“buy”).

Edgen Group Inc. Class A (EDG) is bumping up its rating from a C (“hold”) to a B (“buy”) this week. In Portfolio Grader’s specific subcategory of Equity, EDG also gets an A. For more information, get Portfolio Grader’s complete analysis of EDG stock.

United Rentals, Inc. (URI) shows solid improvement this week. The company’s rating rises from a C to a B. United Rentals is an equipment rental company that serves construction and industrial companies, manufacturers, utilities, municipalities, homeowners, and government entities. Shares of URI have increased 9.4% over the past month, better than the 1.7% decrease the S&P 500 has seen over the same period of time. For more information, get Portfolio Grader’s complete analysis of URI stock.

Aircastle Limited’s (AYR) ratings are looking better this week, moving up to a B from last week’s C. Aircastle is engaged in acquiring, leasing, and selling commercial jet aircrafts to passenger and cargo airlines throughout the world. At $19.33, the stock is above the 50-day moving average of $18.96. For more information, get Portfolio Grader’s complete analysis of AYR 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.