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”).

This week, Noodles & Co. Class A (NDLS) falls to a D (“sell”), worse than last week’s grade of C (“hold”). As of Feb. 24, 2015, 13.9% of outstanding Noodles & Co. Class A shares were held short. Shares of the stock have been trading at an exceptionally rapid pace, up threefold from the week prior. The stock has a trailing PE Ratio of 50.50. To get an in-depth look at NDLS, 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. For more information, 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. Shares of the stock have been changing hands at an unusually rapid pace, twice the rate of the week prior. To get an in-depth look at MGM, 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. For more information, 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.