This week, the ratings of 4 Health Care Equipment & Supplies stocks on Portfolio Grader are down. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

Slipping from a D to a F rating, Invacare Corporation (IVC) takes a hit this week. Invacare Corporation manufactures and distributes health care products to the non-acute care market on a worldwide basis. The company also gets F’s in earnings revisions, earnings surprise, and earnings momentum. For more information, get Portfolio Grader’s complete analysis of IVC stock.

Misonix, Inc. (MSON) is having a tough week. The company’s rating falls from a D to a F. Misonix, Inc. designs, manufactures, markets and develops minimally invasive ultrasonic medical device products. The company also gets F’s in earnings growth and earnings momentum. For more information, get Portfolio Grader’s complete analysis of MSON stock.

DarioHealth Corp. (DRIO) declines this week from a C to a D. The company also gets F’s in earnings revisions, earnings surprise, earnings momentum, return on equity, and free cash flow. For more information, get Portfolio Grader’s complete analysis of DRIO stock.

Bellerophon Therapeutics, Inc.’s (BLPH) rating weakens this week, dropping to a F versus last week’s D. The company also gets F’s in return on equity and free cash flow. For more information, get Portfolio Grader’s complete analysis of BLPH 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.