This week, 3 Commercial Services & Supplies stocks are improving their overall ratings on Portfolio Grader. Each of these stocks is rated an “A” (“strong buy”) or “B” overall (“buy”).

Cintas Corporation (CTAS) earns a A this week, jumping up from last week’s grade of B. Cintas Corporation provides uniforms first aid items, and other products to businesses. The company also gets A’s in earnings revisions and return on equity. For more information, get Portfolio Grader’s complete analysis of CTAS stock.

Matthews International Corporation Class A (MATW) is seeing ratings go up from a C last week to a B this week. Matthews International Corporation Class A is a designer, manufacturer and marketer principally of memorialization products and brand solutions. For more information, get Portfolio Grader’s complete analysis of MATW stock.

Healthcare Services Group, Inc. (HCSG) gets a higher grade this week, advancing from a B last week to a A. Healthcare Services Group, Inc. provides housekeeping, laundry, linen, facility maintenance, and dietary services to the health care industry in the United States. The company also gets A’s in operating margin growth, earnings momentum, and return on equity. For more information, get Portfolio Grader’s complete analysis of HCSG 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.