This week, 5 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”).

G&K; Services, Inc., Class A’s (GK) ratings are looking better this week, moving up to a A from last week’s B. G&K; Services, Inc., Class A provides branded uniform and facility services programs in the United States, Canada, Ireland, and the Dominican Republic. The company also gets A’s in return on equity. For more information, get Portfolio Grader’s complete analysis of GK stock.

US Ecology, Inc. (ECOL) is seeing ratings go up from a C last week to a B this week. US Ecology, Inc. provides radioactive, hazardous, polychlorinated biphenyls and non-hazardous industrial waste management and recycling services to commercial and government entities, such as refineries and chemical production facilities. The company also gets A’s in operating margin growth and earnings growth. For more information, get Portfolio Grader’s complete analysis of ECOL stock.

Rollins, Inc. (ROL) shows solid improvement this week. The company’s rating rises from a C to a B. Rollins, Inc. provides pest and termite control services to residential and commercial customers internationally. The company also gets A’s in return on equity. For more information, get Portfolio Grader’s complete analysis of ROL stock.

The rating of Cypress Energy Partners LP (CELP) moves up this week, rising from a C to a B. The company also gets A’s in earnings revisions and earnings surprise. For more information, get Portfolio Grader’s complete analysis of CELP stock.

This week, Odyssey Marine Exploration, Inc.’s (OMEX) ratings are up from a C last week to a B. Odyssey Marine Exploration, Inc. is engaged in archaeologically-sensitive exploration and recovery of shipwrecks throughout the world. The company also gets A’s in sales growth. For more information, get Portfolio Grader’s complete analysis of OMEX 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.