This week, 4 Specialty Retail stocks are worse, according to the Portfolio Graderdatabase. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

Group 1 Automotive, Inc.’s (GPI) rating weakens this week, dropping to a D versus last week’s C. Group 1 Automotive, Inc. owns and operates automobile dealerships. For more information, get Portfolio Grader’s complete analysis of GPI stock.

AutoNation, Inc. (AN) declines this week from a C to a D. AutoNation, Inc. operates as an automotive retailer in the United States. For more information, get Portfolio Grader’s complete analysis of AN stock.

MarineMax, Inc. (HZO) earns a D this week, moving down from last week’s grade of C. MarineMax, Inc. retails recreational boats in the United States. The company also gets F’s in earnings revisions. For more information, get Portfolio Grader’s complete analysis of HZO stock.

Boot Barn Holdings, Inc. (BOOT) slips from a D to a F this week. Boot Barn Holdings, Inc. designs, develops, manufactures, and markets protective footwear and rainwear. The company also gets F’s in earnings growth and earnings revisions. For more information, get Portfolio Grader’s complete analysis of BOOT 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.