The grades of three Commercial Services stocks are better this week, according to the Portfolio Grader database. Every one of these stocks has an “A” (“strong buy”) or “B” overall (“buy”) rating.

This week, Viad Corp. (NYSE:VVI) is showing good progress as the company’s rating jumps from a B (“buy”) last week to an A (“strong buy”). Viad provides high-quality, place-based marketing services in North America, the United Kingdom and the United Arab Emirates, as well as travel and recreation services in the United States and Canada. The stock price has risen 40.7% over the past month, better than the 4.3% increase the S&P 500 has seen over the same period of time. For more information, get Portfolio Grader’s complete analysis of VVI stock.

EnerNOC (NASDAQ:ENOC) is bettering its rating of C (“hold”) from last week to a B (“buy”) this week. EnerNOC develops and provides clean and intelligent power solutions to commercial, institutional and industrial customers, as well as electric power grid operators and utilities.

For more information, get Portfolio Grader’s complete analysis of ENOC stock.

Quad/Graphics (NYSE:QUAD) shows solid improvement this week. The company’s rating rises from a C to a B. Quad/Graphics is a commercial printing company with image centers and photography studios nationwide and plants across the country. Wall Street has pushed the stock higher by 27.9% over the past month. For more information, get Portfolio Grader’s complete analysis of QUAD 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.