This week, the ratings of seven insurance stocks on Portfolio Grader are down. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

This week, The Allstate Corporation (ALL) falls to a D (“sell”), worse than last week’s grade of C (“hold”). Allstate is engaged in the personal property and casualty insurance business, as well as the life insurance, retirement, and investment products business. ALL also rates an F in Portfolio Grader’s specific subcategory of Earnings Growth. The stock price has fallen 5.9% over the past month, worse than the 1.7% decrease the S&P 500 has seen over the same period of time. For a full analysis of ALL stock, visit Portfolio Grader.

Assured Guaranty (AGO) gets weaker ratings this week as last week’s C drops to a D. Assured Guaranty provides credit enhancement products to the public finance, structured finance, and mortgage markets. The stock also gets an F in Earnings Momentum. To get an in-depth look at AGO, get Portfolio Grader’s complete analysis of AGO stock.

Validus Holdings, Ltd. (VR) is having a tough week. The company’s rating falls from a C to a D. Validus Holdings provides reinsurance and insurance coverage in the property and marine markets. The stock also rates an F in Earnings Surprise. For a full analysis of VR stock, visit Portfolio Grader.

Alleghany Corporation (Y) earns an F (“strong sell”) this week, moving down from last week’s grade of D (“sell”). Alleghany engages in the property and casualty, and surety insurance business in the United States. The stock gets F’s in Earnings Surprise and Margin Growth. For more information, get Portfolio Grader’s complete analysis of Y stock.

Baldwin & Lyons, Inc. Class B (BWINB) earns a D this week, falling from last week’s grade of C. Baldwin & Lyons specializes in marketing and underwriting property and casualty insurance and the assumption of property reinsurance mainly insuring against catastrophes. The stock also gets an F in Earnings Surprise. To get an in-depth look at BWINB, get Portfolio Grader’s complete analysis of BWINB stock.

White Mountains Insurance Group, Ltd.’s (WTM) rating weakens this week, dropping to a D versus last week’s C. White Mountains Insurance Group is a Bermuda limited liability company whose main businesses are conducted through its property and casualty insurance and reinsurance subsidiaries and affiliates. The stock also rates an F in Sales Growth. For more information, get Portfolio Grader’s complete analysis of WTM stock.

The rating of Selective Insurance Group, Inc. (SIGI) declines this week from a C to a D. Selective Insurance offers property and casualty insurance products and services the eastern and midwestern regions of the United States. For a full analysis of SIGI stock, visit Portfolio Grader.

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.