Five specialty retail stocks are moving up in their overall rating this week, according to the Portfolio Grader database. Every one of these is graded an “A” (“strong buy”) or “B” overall (“buy”).

Williams-Sonoma, Inc. (WSM) ups its rating to a B (“buy”) this week after earning a C (“hold”) in the week before. Williams-Sonoma is a retailer of home products, mainly culinary and serving equipment. In Portfolio Grader’s specific subcategory of Equity, WSM also gets an A. 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.

Signet Jewelers Limited (SIG) earns a B this week, jumping up from last week’s grade of C. Signet Jewelers is engaged in the retailing of jewelry, watches and gifts with branches throughout UK and US. For more information, get Portfolio Grader’s complete analysis of SIG stock.

This week, Murphy USA, Inc. (MUSA) is showing good progress as the company’s rating jumps from a B (“buy”) last week to an A (“strong buy”). Metals USA Holdings is one of the largest metal service center businesses in North America. For more information, get Portfolio Grader’s complete analysis of MUSA stock.

Gap, Inc. (GPS) is seeing ratings go up from a C last week to a B this week. Gap is an international specialty retailer operating retail and outlet stores. For more information, get Portfolio Grader’s complete analysis of GPS stock.

Tractor Supply Company (TSCO) improves from a C to a B rating this week. Tractor Supply operates retail farm and ranch stores in the United States. For more information, get Portfolio Grader’s complete analysis of TSCO 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.