The grades of four durable goods stocks are on the rise this week on Portfolio Grader. Each of these stocks is rated an “A” (“strong buy”) or “B” overall (“buy”).

Garmin (GRMN) is bettering its rating of C (“hold”) from last week to a B (“buy”) this week. Garmin provides navigation, communications, and information devices, most of which are enabled by Global Positioning System technology. In Portfolio Grader’s specific subcategory of Equity, GRMN also gets an A. Shares of the stock have been changing hands at an unusually rapid pace, up 1002.8% from the week prior. For more information, get Portfolio Grader’s complete analysis of GRMN stock.

Tempur Sealy International Inc’s (TPX) ratings are looking better this week, moving up to a B from last week’s C. Tempur Sealy International manufactures and markets foam mattresses, pillows, and miscellaneous products. For more information, get Portfolio Grader’s complete analysis of TPX stock.

Lennar Corporation Class A (LEN) improves from a C to a B rating this week. Lennar constructs and sells single-family attached and detached homes, and to a lesser extent multi-level buildings as well as buys and sells residential land. For more information, get Portfolio Grader’s complete analysis of LEN stock.

This is a strong week for NVR, Inc. (NVR). The company’s rating climbs to B from the previous week’s C. NVR builds and markets homes and conducts mortgage banking activities. For more information, get Portfolio Grader’s complete analysis of NVR 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.