Four packaged foods stocks are moving up in their overall rating this week, according to the Portfolio Grader database. Every one of these is graded an “A” (“strong buy”) or “B” overall (“buy”).

Post Holdings, Inc. (POST) ups its rating to a B (“buy”) this week after earning a C (“hold”) in the week before. Post Holdings manufactures, markets and distributes branded ready-to-eat cereals in the U.S. and Canada. In Portfolio Grader’s specific subcategories of Earnings Revisions and Sales Growth, POST also gets A’s. Ater posting four consecutive days of descending prices, the stock price is now $52.11. For more information, get Portfolio Grader’s complete analysis of POST stock.

This week, Westway Group (WWAY) pushes up from a C to a B rating. Westway Group provides bulk liquid storage and related value-added services worldwide. For more information, get Portfolio Grader’s complete analysis of WWAY stock.

This week, Pinnacle Foods, Inc. (PF) is making solid headway. The company’s rating improves to an A (“strong buy”) from last week’s B (“buy”) rating. The stock price is $30.28 after recording four straight days of falling prices. For more information, get Portfolio Grader’s complete analysis of PF stock.

Chiquita Brands International, Inc. (CQB) earns a B this week, jumping up from last week’s grade of C. Chiquita is an international marketer and distributor of bananas and other fresh produce. For more information, get Portfolio Grader’s complete analysis of CQB 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.