This week, three Durable Goods stocks are improving their overall ratings on Portfolio Grader. Each of these stocks is rated an “A” (“strong buy”) or “B” overall (“buy”).

American Greetings (NYSE:AM) is bumping up its rating from a C (“hold”) to a B (“buy”) this week. American Greetings designs, manufactures, and sells greeting cards and other related products. For more information, get Portfolio Grader’s complete analysis of AM stock.

Ryland Group (NYSE:RYL) is progressing from last week’s rating of B (“buy”) as the company improves to an A (“strong buy”) this week. Ryland Group is engaged in homebuilding and a mortgage financing. Shares of RYL have increased 14.9% over the past month, better than the 3.7% increase the S&P 500 has seen over the same period of time. For more information, get Portfolio Grader’s complete analysis of RYL stock.

This week, M.D.C. Holdings’ (NYSE:MDC) ratings are up from a B last week to a A. M.D.C. Holdings builds and sells homes under the name Richmond American Homes. Wall Street seems to agree with the upgrade and has propelled the stock up 10.9% over the past month. For more information, get Portfolio Grader’s complete analysis of MDC 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.