This week, six insurance stocks are improving their overall rating on Portfolio Grader. Each of these rates an “A” (“strong buy”) or “B” overall (“buy”).

This week, Maiden Holdings, Ltd. (MHLD) is showing good progress as the company’s rating jumps from a B (“buy”) last week to an A (“strong buy”). Maiden Holdings focuses on providing non-catastrophic, customized reinsurance products and services. In Portfolio Grader’s specific subcategory of Earnings Momentum, MHLD also gets an A. For more information, get Portfolio Grader’s complete analysis of MHLD stock.

American Financial Group, Inc. (AFG) is bettering its rating of C (“hold”) from last week to a B (“buy”) this week. American Financial is engaged in property and casualty insurance. For more information, get Portfolio Grader’s complete analysis of AFG stock.

This week, Meadowbrook Insurance Group, Inc. (MIG) pushes up from a B to an A rating. Meadowbrook Insurance Group provides alternative risk management programs and services. For more information, get Portfolio Grader’s complete analysis of MIG stock.

National Western Life Insurance Company Class A (NWLI) improves from a C to a B rating this week. National Western Life Insurance sells life insurance and annuity products in the United States. 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 NWLI stock.

Employers Holdings, Inc. (EIG) boosts its rating from a C to a B this week. Employers Holdings operates in the commercial property and casualty insurance industry in the United States. For more information, get Portfolio Grader’s complete analysis of EIG stock.

This is a strong week for Hartford Financial Services Group, Inc. (HIG). The company’s rating climbs to B from the previous week’s C. The Hartford Financial Services Group provides a range of insurance products. For more information, get Portfolio Grader’s complete analysis of HIG 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.