The grades of four Specialty Retail stocks are on the rise this week on Portfolio Grader. Each of these stocks is rated an “A” (“strong buy”) or “B” overall (“buy”).

Big 5 Sporting Goods (NASDAQ:BGFV) is bumping up its rating from a C (“hold”) to a B (“buy”) this week. Big 5 Sporting Goods is a sporting goods retailer in the western United States. In Portfolio Grader’s specific subcategory of Earnings Revisions, BGFV also gets an A. Shares of BGFV have increased 17.3% over the past month, better than the 1.7% increase the Nasdaq has seen over the same period of time. For more information, get Portfolio Grader’s complete analysis of BGFV stock.

This week, Vitamin Shoppe (NYSE:VSI) is showing good progress as the company’s rating jumps from a B (“buy”) last week to an A (“strong buy”). Vitamin Shoppe is a specialty retailer and marketer of nutritional products. For more information, get Portfolio Grader’s complete analysis of VSI stock.

This week, Williams-Sonoma (NYSE:WSM) pushes up from a C to a B rating. Williams-Sonoma is a retailer of home products, mainly culinary and serving equipment. For more information, get Portfolio Grader’s complete analysis of WSM stock.

The rating of Barnes & Noble (NYSE:BKS) moves up this week, rising from a C to a B. Barnes & Noble sells various books, magazines, gifts, music, and movies direct to customers. For more information, get Portfolio Grader’s complete analysis of BKS 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.