The grades of five chemicals 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.

Core Molding Technologies, Inc. (CMT) is bumping up its rating from a C (“hold”) to a B (“buy”) this week. Core Molding Technologies engages in the manufacture and sale of sheet molding compound (SMC) products in the United States, Canada, and Mexico. For more information, get Portfolio Grader’s complete analysis of CMT stock.

Agrium’s (AGU) ratings are looking better this week, moving up to a B from last week’s C. Agrium is a major retail supplier of agricultural products and services in the Americas, as well as a global producer and marketer of agricultural nutrients and industrial products. At present, the stock has a dividend yield of 3%. For more information, get Portfolio Grader’s complete analysis of AGU stock.

OCI Resources LP (OCIR) is making headway this week, with the company’s rating improving to an A (“strong buy”) from a B (“buy”) last week. The stock’s dividend yield is 2.1%. For more information, get Portfolio Grader’s complete analysis of OCIR stock.

Scotts Miracle-Gro Company Class A (SMG) boosts its rating from a C to a B this week. Scotts Miracle-Gro manufactures and markets consumer-branded, non-durable products for lawn and garden care and professional horticulture. For more information, get Portfolio Grader’s complete analysis of SMG stock.

Monsanto Company (MON) shows solid improvement this week. The company’s rating rises from a C to a B. Monsanto provides agricultural products for farmers. For more information, get Portfolio Grader’s complete analysis of MON 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.