Three health care provider stocks are moving up in their overall rating this week, according to the Portfolio Grader database. Every one of these is graded an “A” (“strong buy”) or “B” overall (“buy”).

Triple-S Management Corporation Class B (GTS) is progressing from last week’s rating of B (“buy”) as the company improves to an A (“strong buy”) this week. Triple-S Management is an independent licensee of the Blue Cross Blue Shield Association. In Portfolio Grader’s specific subcategory of Cash Flow, GTS also gets an A. For more information, get Portfolio Grader’s complete analysis of GTS stock.

WellCare Health Plans, Inc.’s (WCG) grade is moving up to a B (“buy”) this week from last week’s C (“hold”). WellCare Health Plans provides managed care services, including prescription drug plans and health plans, for families, children, the aged, blind and disabled. Shares of the stock have been changing hands at an unusually rapid pace, twice the rate of the week prior. For more information, get Portfolio Grader’s complete analysis of WCG stock.

Cigna (CI) is seeing ratings go up from a B last week to an A this week. CIGNA provides health care and related benefits, such as life and accident insurance, health care products, and workers’ compensation case management. For more information, get Portfolio Grader’s complete analysis of CI 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.