Three 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”).

This week, Post Holdings, Inc. (POST) is showing significant improvement as the company’s rating hops from a C (“hold”) to a B (“buy”). 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. The stock has inched up 1.8% over the past week. For more information, get Portfolio Grader’s complete analysis of POST stock.

Westway Group (WWAY) gets a higher grade this week, advancing from a C last week to a B. 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, Chiquita Brands International, Inc.’s (CQB) ratings are up from a C last week to a B. Chiquita is an international marketer and distributor of bananas and other fresh produce. The stock has pushed up 0.1% over the past week. 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.