The grades of 6 Hotels Restaurants & Leisure stocks are better this week, according to the Portfolio Grader database. Every one of these stocks has an “A” (“strong buy”) or “B” overall (“buy”) rating.

Nathan’s Famous, Inc. (NATH) boosts its rating from a C to a B this week. Nathan’s Famous, Inc. operates, franchises, or licenses fast-food restaurants and has various branded product points of distribution. For more information, get Portfolio Grader’s complete analysis of NATH stock.

China Lodging Group Ltd. Sponsored ADR’s (HTHT) ratings are looking better this week, moving up to a A from last week’s B. China Lodging Group Ltd. Sponsored ADR is an economy hotel chain in China. The company also gets A’s in operating margin growth. For more information, get Portfolio Grader’s complete analysis of HTHT stock.

This is a strong week for Diamond Resorts International, Inc. (DRII). The company’s rating climbs to B from the previous week’s C. The company also gets A’s in operating margin growth, earnings growth, return on equity, and free cash flow. For more information, get Portfolio Grader’s complete analysis of DRII stock.

The rating of Isle of Capri Casinos, Inc. (ISLE) moves up this week, rising from a C to a B. Isle of Capri Casinos, Inc. develops, owns, and operates branded gaming facilities and related lodging and entertainment facilities in markets throughout the United States and internationally. The company also gets A’s in operating margin growth, earnings growth, earnings revisions, return on equity, and free cash flow. For more information, get Portfolio Grader’s complete analysis of ISLE stock.

Arcos Dorados Holdings, Inc. Class A (ARCO) earns a B this week, jumping up from last week’s grade of C. Arcos Dorados Holdings, Inc. Class A operates and franchises McDonald’s restaurants. The company also gets A’s in earnings revisions. For more information, get Portfolio Grader’s complete analysis of ARCO stock.

Dover Downs Gaming & Entertainment, Inc. (DDE) gets a higher grade this week, advancing from a C last week to a B. Dover Downs Gaming & Entertainment, Inc. is a gaming and entertainment company that operates a casino, hotel, conference center, and raceway. The company also gets A’s in free cash flow. For more information, get Portfolio Grader’s complete analysis of DDE 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.