This week, 6 Commercial Services & Supplies stocks are improving their overall rating on Portfolio Grader. Each of these rates an “A” (“strong buy”) or “B” overall (“buy”).

Waste Connections, Inc. (WCN) boosts its rating from a B to a A this week. Waste Connections, Inc. is an integrated solid waste services company that provides solid waste collection, transfer, disposal and recycling services in mostly secondary markets in the western and southern United States. The company also gets A’s in earnings surprise and earnings momentum. For more information, get Portfolio Grader’s complete analysis of WCN stock.

MSA Safety, Inc.’s (MSA) ratings are looking better this week, moving up to a B from last week’s C. MSA Safety, Inc. develops, makes, and supplies products that protect people’s health and safety. The company also gets A’s in earnings growth and return on equity. For more information, get Portfolio Grader’s complete analysis of MSA stock.

Brink’s Company (BCO) earns a B this week, jumping up from last week’s grade of C. Brink’s Company provides secure transportation, cash logistics, and other security-related services to banks and financial institutions, retailers, government agencies, mints, jewelers and other commercial operations around the world. The company also gets A’s in earnings surprise and earnings momentum. For more information, get Portfolio Grader’s complete analysis of BCO stock.

This week, Quad/Graphics, Inc. Class A (QUAD) pushes up from a B to a A rating. Quad/Graphics, Inc. Class A is a commercial printing company with image centers and photography studios nationwide and plants across the country. The company also gets A’s in earnings revisions and earnings momentum. For more information, get Portfolio Grader’s complete analysis of QUAD stock.

This week, Pointer Telocation Ltd.’s (PNTR) ratings are up from a C last week to a B. Pointer Telocation Ltd. provides mobile resource management products and services for the automotive and insurance industries. The company also gets A’s in earnings momentum. For more information, get Portfolio Grader’s complete analysis of PNTR stock.

Cemtrex, Inc. (CETX) improves from a B to a A rating this week. The company also gets A’s in sales growth, return on equity, and free cash flow. For more information, get Portfolio Grader’s complete analysis of CETX 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.