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

Maiden Holdings, Ltd. (MHLD) is progressing from last week’s rating of B (“buy”) as the company improves to an A (“strong buy”) this week. 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. 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 AFG stock.

Meadowbrook Insurance Group, Inc.’s (MIG) ratings are looking better this week, moving up to an A from last week’s B. 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. In the past week, trade volume fell significantly to half the previous rate. For more information, get Portfolio Grader’s complete analysis of NWLI stock.

This week, Employers Holdings, Inc. (EIG) pushes up from a C to a B rating. Employers Holdings operates in the commercial property and casualty insurance industry in the United States. Shares of the stock have been trading at an exceptionally rapid pace, up 604.6% from the week prior. For more information, get Portfolio Grader’s complete analysis of EIG stock.

Hartford Financial Services Group, Inc. (HIG) earns a B this week, jumping up from last week’s grade of 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.