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. Edgen Group is a holding company which distributes specialty products to the energy sector. 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.

Aircastle Limited (AYR) shows solid improvement this week. The company’s rating rises from a C to a B. Aircastle is engaged in acquiring, leasing, and selling commercial jet aircrafts to passenger and cargo airlines throughout the world. Shares of the stock have been trading at an exceptionally rapid pace, up threefold from the week prior. For more information, get Portfolio Grader’s complete analysis of AYR stock.

United Rentals, Inc.’s (URI) ratings are looking better this week, moving up to a B from last week’s C. United Rentals is an equipment rental company that serves construction and industrial companies, manufacturers, utilities, municipalities, homeowners, and government entities. For more information, get Portfolio Grader’s complete analysis of URI 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.