This week, 4 Insurance stocks are improving their overall ratings on Portfolio Grader. Each of these stocks is rated an “A” (“strong buy”) or “B” overall (“buy”).

Alleghany Corporation (Y) gets a higher grade this week, advancing from a C last week to a B. Alleghany Corporation engages in the property and casualty, and surety insurance business in the United States. The company also gets A’s in free cash flow. For more information, get Portfolio Grader’s complete analysis of Y stock.

Erie Indemnity Company Class A’s (ERIE) ratings are looking better this week, moving up to a A from last week’s B. Erie Indemnity Company Class A is involved in the property/casualty insurance business. The company also gets A’s in return on equity. For more information, get Portfolio Grader’s complete analysis of ERIE stock.

State National Cos., Inc. (SNC) improves from a C to a B rating this week. The company also gets A’s in return on equity and free cash flow. For more information, get Portfolio Grader’s complete analysis of SNC stock.

WMIH Corp. (WMIH) boosts its rating from a C to a B this week. The company also gets A’s in earnings momentum, return on equity, and free cash flow. For more information, get Portfolio Grader’s complete analysis of WMIH 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.