This week, 5 Commercial Services & Supplies stocks are improving their overall rating on Portfolio Grader. Each of these rates an “A” (“strong buy”) or “B” overall (“buy”).

This week, Matthews International Corporation Class A (MATW) pushes up from a B to a A rating. Matthews International Corporation Class A is a designer, manufacturer and marketer principally of memorialization products and brand solutions. The company also gets A’s in sales growth. For more information, get Portfolio Grader’s complete analysis of MATW stock.

This week, Herman Miller, Inc.’s (MLHR) ratings are up from a C last week to a B. Herman Miller, Inc. researches, designs, manufactures, and distributes office furniture systems, products and related services. The company also gets A’s in earnings revisions and return on equity. For more information, get Portfolio Grader’s complete analysis of MLHR stock.

ABM Industries Incorporated (ABM) is seeing ratings go up from a C last week to a B this week. ABM Industries Incorporated is a facility services contractor that provides janitorial, parking, security, and engineering services for commercial, industrial, institutional, and retail facilities. For more information, get Portfolio Grader’s complete analysis of ABM stock.

This is a strong week for InnerWorkings, Inc. (INWK). The company’s rating climbs to B from the previous week’s C. InnerWorkings, Inc. provides print procurement solutions to corporate clients in the United States. The company also gets A’s in operating margin growth and free cash flow. For more information, get Portfolio Grader’s complete analysis of INWK stock.

Command Security Corporation’s (MOC) ratings are looking better this week, moving up to a B from last week’s C. Command Security Corporation provides uniformed security officers, aviation security services and support security services to commercial, financial, industrial, aviation and governmental customers throughout the United States. The company also gets A’s in free cash flow. For more information, get Portfolio Grader’s complete analysis of MOC 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.