The ratings of four restaurant and resort stocks are down this week, according to the Portfolio Grader database. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

Noodles & Co. Class A (NDLS) is on the decline this week, earning a D (“sell”) after receiving a C (“hold”) last week. As of Sept. 4, 2015, 12.5% of outstanding Noodles & Co. Class A shares were held short. The stock has a trailing PE Ratio of 53.60. For more information, get Portfolio Grader’s complete analysis of NDLS stock.

Wynn Resorts, Limited’s (WYNN) rating falls this week to an F (“strong sell”), down from last week’s D (“sell”). Wynn Resorts owns and operates destination casino resorts. The stock gets F’s in Earnings Revisions and Earnings Surprise. To get an in-depth look at WYNN, get Portfolio Grader’s complete analysis of WYNN stock.

The rating of MGM Resorts (MGM) declines this week from a D to an F. MGM Resorts International operates gaming, hospitality and entertainment resorts. The stock gets F’s in Earnings Momentum, Earnings Revisions and Earnings Surprise. For more information, get Portfolio Grader’s complete analysis of MGM stock.

This week, Las Vegas Sands’ (LVS) rating worsens to an F from the company’s D rating a week ago. Las Vegas Sands owns and operates casino resorts and convention centers. The stock also gets an F in Earnings Revisions. Shares of the stock are changing hands at twice the rate they were a week ago. To get an in-depth look at LVS, get Portfolio Grader’s complete analysis of LVS 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.