This week, the overall grades of four Restaurant and Resort stocks are lower, according to the Portfolio Grader database. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

This week, Tim Hortons (NYSE:THI) falls to a D (“sell”), worse than last week’s grade of C (“hold”). Tim Hortons operates a chain of fast-food restaurants in North America. For more information, get Portfolio Grader’s complete analysis of THI stock.

MGM Resorts (NYSE:MGM) experiences a ratings drop this week, going from last week’s C to a D. MGM Resorts operates gaming, hospitality and entertainment resorts. The stock gets F’s in Earnings Momentum, Earnings Revisions, Equity, and Margin Growth. For a full analysis of MGM stock, visit Portfolio Grader.

This week, Darden Restaurants (NYSE:DRI) drops from C to a D rating. Darden Restaurants operates franchised restaurants, including Red Lobster, Olive Garden, LongHorn Steakhouse, and The Capital Grille. The stock also gets an F in Earnings Surprise. The stock price has fallen 16.7% over the past month, worse than the 1.5% increase the S&P 500 has seen over the same period of time. To get an in-depth look at DRI, get Portfolio Grader’s complete analysis of DRI stock.

International Game Technology’s (NYSE:IGT) rating weakens this week, dropping to a D versus last week’s C. International Game Technology designs and manufactures computerized casino gaming systems. For a full analysis of IGT stock, visit Portfolio Grader.

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.