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

This week, Middleby Corp. (NASDAQ:MIDD) is showing good progress as the company’s rating jumps from a B (“buy”) last week to an A (“strong buy”). The Middleby is engaged in the design, manufacture, marketing, distribution, and service of a line of cooking and warming equipment used in all types of commercial restaurants and institutional kitchens and food preparation, cooking and packaging equipment for food processing operations. In Portfolio Grader’s specific subcategories of Earnings Growth, Earnings Revisions, Equity, and Sales Growth, MIDD also gets A’s. Shares of the company are up 19.7% from a month ago. This is better than the Nasdaq’s 4.9% for the same period. For more information, get Portfolio Grader’s complete analysis of MIDD stock.

This week, Cascade (NYSE:CASC) is showing significant improvement as the company’s rating hops from a C (“hold”) to a B (“buy”). Cascade makes materials handling load engagement devices and related replacement parts, mainly for the lift truck industry. Shares of CASC have increased 7.9% over the past month. The stock has a trailing PE Ratio of 9.5. For more information, get Portfolio Grader’s complete analysis of CASC stock.

Flow International (NASDAQ:FLOW) shows solid improvement this week. The company’s rating rises from a C to a B. Flow International designs, develops, manufactures, markets, and services ultrahigh-pressure waterjet cutting and cleaning systems, specialized robotics systems, and food safety applications. Investors have pushed the stock price up 2.4% over the past month. For more information, get Portfolio Grader’s complete analysis of FLOW 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.