Four insurance 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”).

This week, Primerica, Inc. (PRI) is showing significant improvement as the company’s rating hops from a C (“hold”) to a B (“buy”). Primerica distributes financial products to middle income households in North America. Shares of the stock have been trading at an exceptionally rapid pace, up twofold from the week prior. For more information, get Portfolio Grader’s complete analysis of PRI stock.

Blue Capital Reinsurance Holdings Ltd. (BCRH) improves from a C to a B rating this week. For more information, get Portfolio Grader’s complete analysis of BCRH stock.

This week, Aviva plc Sponsored ADR (AV) pushes up from a C to a B rating. Aviva provides insurance, savings, and fund management products and services worldwide. For more information, get Portfolio Grader’s complete analysis of AV stock.

State Auto Financial Corporation (STFC) boosts its rating from a C to a B this week. State Auto Financial is a property and casualty insurance company engaged in writing personal and business lines of insurance. 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 STFC 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.