The grades of 4 Health Care Providers & Services stocks are better this week, according to the Portfolio Grader database. Every one of these stocks has an “A” (“strong buy”) or “B” overall (“buy”) rating.

CorVel Corporation (CRVL) boosts its rating from a B to a A this week. CorVel Corporation provides managed care services in the workers’ compensation, accident and health, and auto insurance markets across the United States. The company also gets A’s in return on equity. For more information, get Portfolio Grader’s complete analysis of CRVL stock.

Almost Family, Inc.’s (AFAM) ratings are looking better this week, moving up to a B from last week’s C. Almost Family, Inc. is a regionally focused provider of home health services with locations around the United States. The company also gets A’s in operating margin growth, earnings revisions, and free cash flow. For more information, get Portfolio Grader’s complete analysis of AFAM stock.

This week, HealthEquity Inc’s (HQY) ratings are up from a C last week to a B. The company also gets A’s in sales growth, earnings growth, and earnings surprise. For more information, get Portfolio Grader’s complete analysis of HQY stock.

The rating of China Cord Blood Corporation (CO) moves up this week, rising from a C to a B. China Cord Blood Corporation engages in the provision of umbilical cord blood storage and ancillary services in its cord blood banks. The company also gets A’s in earnings growth, earnings revisions, earnings surprise, earnings momentum, and free cash flow. For more information, get Portfolio Grader’s complete analysis of CO 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.