This week, the ratings of 4 Commercial Services & Supplies stocks on Portfolio Grader are down. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

Stericycle, Inc. (SRCL) gets weaker ratings this week as last week’s C drops to a D. Stericycle, Inc. manages regulated waste and provides a variety of related services internationally. For more information, get Portfolio Grader’s complete analysis of SRCL stock.

This week, Quad/Graphics, Inc. Class A’s (QUAD) rating worsens to a F from the company’s D rating a week ago. 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 F’s in operating margin growth, earnings growth, earnings revisions, earnings momentum, and free cash flow. For more information, get Portfolio Grader’s complete analysis of QUAD stock.

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

Fuel Tech, Inc. (FTEK) declines this week from a D to a F. Fuel Tech, Inc. develops and commercializes air pollution control technologies and provides engineering services. The company also gets F’s in earnings growth, earnings surprise, and free cash flow. For more information, get Portfolio Grader’s complete analysis of FTEK 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.