The ratings of three Health Care Provider stocks are down this week, according to the Portfolio Grader database. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

Emeritus (NYSE:ESC) is on the decline this week, earning a D (“sell”) after receiving a C (“hold”) last week. Emeritus Corporation is a fully integrated senior housing services company focused on operating residential-style assisted-living communities. In Portfolio Grader’s specific subcategories of Earnings Growth, Earnings Momentum, and Equity, ESC also gets an F. For a full analysis of ESC stock, visit Portfolio Grader.

The rating of Fresenius Medical Care (NYSE:FMS) slips from a C to a D. Fresenius Medical Care offers kidney dialysis services and manufactures and distributes equipment and products used in the treatment of dialysis patients. To get an in-depth look at FMS, get Portfolio Grader’s complete analysis of FMS stock.

This week, Corvel‘s (NASDAQ:CRVL) rating worsens to a D from the company’s C rating a week ago. CorVel provides risk-management solutions to employers, third-party administrators, insurance companies, and government agencies. For more information, get Portfolio Grader’s complete analysis of CRVL 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.