This week, four specialty retail stocks are improving their overall rating on Portfolio Grader. Each of these rates an “A” (“strong buy”) or “B” overall (“buy”).

This week, Gap, Inc. (GPS) is showing significant improvement as the company’s rating hops from a C (“hold”) to a B (“buy”). Gap is an international specialty retailer operating retail and outlet stores. In Portfolio Grader’s specific subcategory of Equity, GPS also gets an A. For more information, get Portfolio Grader’s complete analysis of GPS stock.

This is a strong week for Tractor Supply Company (TSCO). The company’s rating climbs to B from the previous week’s 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.

The rating of Williams-Sonoma, Inc. (WSM) moves up this week, rising from a C to a B. 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.

Signet Jewelers Limited (SIG) boosts its rating from a C to a B this week. Signet Jewelers is engaged in the retailing of jewelry, watches and gifts with branches throughout UK and US. The stock finished at $101.29 per share, after four days of consecutive gains. 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.