The grades of 4 Trading Companies & 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”).

MSC Industrial Direct Co., Inc. Class A (MSM) earns a A this week, jumping up from last week’s grade of B. MSC Industrial Direct Co., Inc. Class A is a direct marketer and supplier of a broad range of metalworking and maintenance and repair supplies. The company also gets A’s in return on equity. For more information, get Portfolio Grader’s complete analysis of MSM stock.

WESCO International, Inc. (WCC) shows solid improvement this week. The company’s rating rises from a C to a B. WESCO International, Inc. is a North American distributor of products and provider of supply chain services used mainly in the industrial, construction, utility and commercial, institutional and government markets. The company also gets A’s in free cash flow. For more information, get Portfolio Grader’s complete analysis of WCC stock.

This week, Applied Industrial Technologies, Inc.’s (AIT) ratings are up from a B last week to a A. Applied Industrial Technologies, Inc. distributes industrial products, providing fluid power, mechanical, and rubber shop services. The company also gets A’s in earnings momentum. For more information, get Portfolio Grader’s complete analysis of AIT stock.

Fastenal Company’s (FAST) ratings are looking better this week, moving up to a B from last week’s C. Fastenal Company sells industrial and construction supplies in a wholesale and retail fashion. The company also gets A’s in return on equity. For more information, get Portfolio Grader’s complete analysis of FAST 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.