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”).

Tim Hortons (NYSE:THI) is on the decline this week, earning a D (“sell”) after receiving a C (“hold”) last week. Tim Hortons operates a chain of fast-food restaurants in North America. To get an in-depth look at THI, get Portfolio Grader’s complete analysis of THI stock.

MGM Resorts (NYSE:MGM) earns a D this week, moving down from last week’s grade of C. 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.

Slipping from C to a D rating, Darden Restaurants (NYSE:DRI) takes a hit this week. Darden Restaurants operates franchised restaurants, including Red Lobster, Olive Garden, LongHorn Steakhouse, and The Capital Grille. The stock also rates an F in Earnings Surprise. For more information, 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.