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

Analogic Corporation (ALOG) declines this week from a C to a D. Analogic Corporation is a technology company that designs and manufactures medical imaging and security systems and subsystems that are used primarily in the healthcare and airport security markets. The company also gets F’s in sales growth and earnings revisions. For more information, get Portfolio Grader’s complete analysis of ALOG stock.

Milestone Scientific Inc. (MLSS) gets weaker ratings this week as last week’s C drops to a D. The company also gets F’s in earnings surprise and return on equity. For more information, get Portfolio Grader’s complete analysis of MLSS stock.

Slipping from a C to a D rating, CryoPort, Inc. (CYRX) takes a hit this week. The company also gets F’s in return on equity and free cash flow. For more information, get Portfolio Grader’s complete analysis of CYRX stock.

This week, Bellerophon Therapeutics, Inc. (BLPH) drops from a D to a F rating. 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.