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

Calavo Growers, Inc. (CVGW) gets a higher grade this week, advancing from a B last week to a A. Calavo Growers, Inc. markets and distributes avocados, prepared avocados, and other perishable commodities, as well as manufactures and distributes processed avocado products in the United States and internationally. The company also gets A’s in operating margin growth and earnings growth. For more information, get Portfolio Grader’s complete analysis of CVGW stock.

Blue Buffalo Pet Products Inc (BUFF) shows solid improvement this week. The company’s rating rises from a C to a B. The company also gets A’s in earnings growth and return on equity. For more information, get Portfolio Grader’s complete analysis of BUFF stock.

This week, Limoneira Company (LMNR) pushes up from a D to a B rating. Limoneira Company grows, packs, processes, and markets agricultural products for national and international distribution. The company also gets A’s in sales growth, operating margin growth, earnings growth, earnings revisions, and earnings momentum. For more information, get Portfolio Grader’s complete analysis of LMNR stock.

This week, Lifeway Foods, Inc.’s (LWAY) ratings are up from a C last week to a B. Lifeway Foods, Inc. manufactures cultured, probiotic food products in the health food industry. The company also gets A’s in operating margin growth, earnings growth, earnings revisions, earnings surprise, and earnings momentum. For more information, get Portfolio Grader’s complete analysis of LWAY 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.