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”).

Gap, Inc. (GPS) is making progress this week as its rating of C (“hold”) from last week increases to a B (“buy”) rating this week. Gap is an international specialty retailer operating retail and outlet stores. In Portfolio Grader’s specific subcategory of Equity, GPS also gets an A. The stock price has risen 16% over the past month, better than the 1.7% decrease the S&P 500 has seen over the same period of time. For more information, get Portfolio Grader’s complete analysis of GPS stock.

Tractor Supply Company (TSCO) earns a B this week, jumping up from last week’s grade of C. Tractor Supply operates retail farm and ranch stores in the United States. For more information, get Portfolio Grader’s complete analysis of TSCO stock.

Williams-Sonoma, Inc.’s (WSM) ratings are looking better this week, moving up to a B from last week’s C. Williams-Sonoma is a retailer of home products, mainly culinary and serving equipment. The stock has moved up a slight 1.2% over the past week. Shares of the stock have been trading at an exceptionally rapid pace, up twofold from the week prior. For more information, get Portfolio Grader’s complete analysis of WSM stock.

This week, Signet Jewelers Limited’s (SIG) ratings are up from a C last week to a B. Signet Jewelers is engaged in the retailing of jewelry, watches and gifts with branches throughout UK and US. The stock’s current price of $95.39 is approaching the 52-week high of $95.83. For more information, get Portfolio Grader’s complete analysis of SIG 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.