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

Hormel Foods (NYSE:HRL) is progressing from last week’s rating of B (“buy”) as the company improves to an A (“strong buy”) this week. Hormel Foods manufactures and markets consumer-branded meat and food products. In Portfolio Grader’s specific subcategory of Equity, HRL also gets an A. Shares of HRL have increased 6.7% over the past month, better than the 3% increase the S&P 500 has seen over the same period of time. For more information, get Portfolio Grader’s complete analysis of HRL stock.

Seneca Foods (NASDAQ:SENEA) is bumping up its rating from a C (“hold”) to a B (“buy”) this week. Seneca Foods produces and distributes processed fruits and vegetables. Investors seem to agree with the upgraded status of the stock, and have pushed the stock up 8.1% over the past month. For more information, get Portfolio Grader’s complete analysis of SENEA stock.

John B. Sanfilippo & Son (NASDAQ:JBSS) shows solid improvement this week. The company’s rating rises from a B to an A. John B. Sanfilippo & Son processes, packages, markets, and distributes shelled nuts, in-shell nuts, and sesame sticks. For more information, get Portfolio Grader’s complete analysis of JBSS stock.

Westway Group’s (NASDAQ:WWAY) ratings are looking better this week, moving up to a B from last week’s C. Westway Group provides bulk liquid storage and related value-added services worldwide. For more information, get Portfolio Grader’s complete analysis of WWAY 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.