Five Biotechnology 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”).

Ariad Pharmaceuticals (NASDAQ:ARIA) is bettering its rating of C (“hold”) from last week to a B (“buy”) this week. ARIAD Pharmaceuticals is an oncology company that focuses on the discovery, development, and commercialization of medicines for cancer patients. Shares of ARIA have increased 9.5% over the past month, better than the 5.5% increase the Nasdaq has seen over the same period of time. For more information, get Portfolio Grader’s complete analysis of ARIA stock.

Neurocrine Biosciences (NASDAQ:NBIX) is seeing ratings go up from a C last week to a B this week. Neurocrine Biosciences is focused on the discovery and development of therapeutics for neuropsychiatric, neuroinflammatory, and neurodegenerative diseases and disorders. Wall Street seems to agree with the upgrade and has propelled the stock up 14.1% over the past month. For more information, get Portfolio Grader’s complete analysis of NBIX stock.

This week, Array BioPharma’s (NASDAQ:ARRY) ratings are up from a C last week to a B. Array BioPharma is a biopharmaceutical company focused on the discovery, development and commercialization of targeted small molecule drugs to treat patients afflicted with cancer, inflammatory and metabolic diseases. For more information, get Portfolio Grader’s complete analysis of ARRY stock.

This week, Celldex Therapeutics (NASDAQ:CLDX) is making solid headway. The company’s rating improves to an A (“strong buy”) from last week’s B (“buy”) rating. Celldex Therapeutics is engaged in the discovery, development and commercialization of products that harness the human immune system to prevent and treat disease. For more information, get Portfolio Grader’s complete analysis of CLDX stock.

Insmed Inc. (NASDAQ:INSM) improves from a C to a B rating this week. Insmed develops and commercializes drugs that treat metabolic diseases, endocrine disorders and oncology. Investors have pushed the stock price up 41.2% over the past month. For more information, get Portfolio Grader’s complete analysis of INSM 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.