The overall ratings of four restaurant and resort stocks are down on Portfolio Grader this week. 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 April 22, 2015, 15.7% of outstanding Noodles & Co. Class A shares were held short. Shares of the stock have been changing hands at an unusually rapid pace, twice the rate of the week prior. The stock’s trailing PE Ratio is 52.50. For more information, get Portfolio Grader’s complete analysis of NDLS stock.

Wynn Resorts, Limited (WYNN) ratings are on the decline this week as the company earns an F (“strong sell”). Last week, it received a 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.

This week, MGM Resorts (MGM) drops from a D to an F rating. 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.

The rating of Las Vegas Sands (LVS) slips from a D to an F. Las Vegas Sands owns and operates casino resorts and convention centers. The stock also gets an F in Earnings Revisions. 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.