This week, the overall grades of three Insurance stocks are lower, according to the Portfolio Grader database. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

Global Indemnity‘s (NASDAQ:GBLI) rating falls to a D (“sell”) this week, down from C (“hold”) the week prior. In Portfolio Grader’s specific subcategories of Equity, Cash Flow, Margin Growth, and Sales Growth, GBLI also gets F’s. For more information, get Portfolio Grader’s complete analysis of GBLI stock.

StanCorp Financial Group (NYSE:SFG) earns a D this week, falling from last week’s grade of C. StanCorp Financial Group is a holding company that conducts business through wholly-owned operating subsidiaries throughout the United States. The stock price has dropped 19.5% over the past month, worse than 3.5% increase the S&P 500 has seen over the same period of time.

For a full analysis of SFG stock, visit Portfolio Grader.

Flagstone Reinsurance (NYSE:FSR) gets weaker ratings this week as last week’s C drops to a D. Flagstone Reinsurance Holdings is a global reinsurance and insurance company. The stock receives F’s in Earnings Revisions, Earnings Surprise, and Equity. Cash Flow and Sales Growth also get F’s. The stock price has fallen 10.7% over the past month. To get an in-depth look at FSR, get Portfolio Grader’s complete analysis of FSR 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.