This week, 6 Specialty Retail stocks are worse, according to the Portfolio Graderdatabase. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

Winmark Corporation (WINA) slips from a C to a D this week. Winmark Corporation is a franchisor of four value-oriented retail store concepts that buy, sell, trade and consign merchandise. The company also gets F’s in sales growth. For more information, get Portfolio Grader’s complete analysis of WINA stock.

This week, Bed Bath & Beyond Inc.’s (BBBY) rating worsens to a F from the company’s D rating a week ago. Bed Bath & Beyond Inc. sells an assortment of domestic merchandise and home furnishings. For more information, get Portfolio Grader’s complete analysis of BBBY stock.

This is a rough week for GameStop Corp. Class A (GME). The company’s rating falls to F from the previous week’s D. GameStop Corp. Class A operates specialty electronic game and PC entertainment software stores throughout the United States, Australia, Canada and Europe. For more information, get Portfolio Grader’s complete analysis of GME stock.

Slipping from a C to a D rating, BuildABear Workshop, Inc. (BBW) takes a hit this week. BuildABear Workshop, Inc. operates as a specialty retailer of plush animals and related products. The company also gets F’s in earnings surprise. For more information, get Portfolio Grader’s complete analysis of BBW stock.

West Marine, Inc.’s (WMAR) rating weakens this week, dropping to a D versus last week’s C. West Marine, Inc. operates as a boating supply retailer in the United States. The company also gets F’s in earnings momentum. For more information, get Portfolio Grader’s complete analysis of WMAR stock.

Pier 1 Imports, Inc. (PIR) is having a tough week. The company’s rating falls from a D to a F. Pier 1 Imports, Inc. retails decorative home furnishings, gifts, and related items. The company also gets F’s in earnings growth, earnings revisions, earnings surprise, and earnings momentum. For more information, get Portfolio Grader’s complete analysis of PIR 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.