The grades of 3 Packaged Foods stocks are better this week, according to the Portfolio Grader database. Every one of these stocks has an “A” (“strong buy”) or “B” overall (“buy”) rating.

Dole Food (NYSE:DOLE) is bumping up its rating from a C (“hold”) to a B (“buy”) this week. Dole Food is engaged in producing, marketing and distributing of fresh fruit and fresh vegetables, including an expanding line of value-added products. In Portfolio Grader’s specific subcategory of Earnings Revisions, DOLE also gets an A. Shares of DOLE have increased 16.1% over the past month, better than the 2.2% increase the S&P 500 has seen over the same period of time. For more information, get Portfolio Grader’s complete analysis of DOLE stock.

This week, Kraft Foods (NASDAQ:KFT) is making solid headway. The company’s rating improves to an A (“strong buy”) from last week’s B (“buy”) rating. Kraft Foods manufactures and markets packaged food products, including snacks, beverages, cheese, and convenient meals. Investors seem to agree with the upgraded status of the stock, and have pushed the stock up 6.2% over the past month. For more information, get Portfolio Grader’s complete analysis of KFT stock.

H.J. Heinz (NYSE:HNZ) gets a higher grade this week, advancing from a C last week to a B. H. J. Heinz manufactures and markets processed food products throughout the world. The stock’s dividend yield is 13.8%. For more information, get Portfolio Grader’s complete analysis of HNZ 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.