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

This week, Citizens Inc. (NYSE:CIA) falls to a D (“sell”), worse than last week’s grade of C (“hold”). Citizens provides life and health insurance products, including ordinary whole-life policies and endowment policies. CIA also rates an F in Portfolio Grader’s specific subcategory of Margin Growth. The trailing PE Ratio for the stock is 89.60. To get an in-depth look at CIA, get Portfolio Grader’s complete analysis of CIA stock.

MBIA Inc. (NYSE:MBI) ratings are on the decline this week as the company earns an F (“strong sell”). Last week, it received a D (“sell”). MBIA provides financial guarantee insurance and other forms of credit protection. The stock gets F’s in Earnings Growth and Sales Growth. For more information, get Portfolio Grader’s complete analysis of MBI stock.

The rating of Prudential Financial (NYSE:PRU) declines this week from a D to an F. Prudential Financial provides financial services throughout the United States and several locations worldwide. The stock gets F’s in Earnings Growth, Earnings Momentum, and Earnings Surprise. Margin Growth and Sales Growth also get F’s. For a full analysis of PRU stock, visit Portfolio Grader.

CNinsure Inc. (NASDAQ:CISG) experiences a ratings drop this week, going from last week’s C to a D. CNinsure is an independent insurance intermediary company that operates in China. The stock gets F’s in Earnings Growth, Cash Flow, and Margin Growth. The stock price has dropped 5.6% over the past month, worse than the 4.7% increase the Nasdaq has seen over the same period of time. To get an in-depth look at CISG, get Portfolio Grader’s complete analysis of CISG stock.

MetLife (NYSE:MET) is having a tough week. The company’s rating falls from a D to an F. MetLife provides insurance and other financial services to individuals and institutions. The stock receives F’s in Earnings Growth, Earnings Momentum, Margin Growth, and Sales Growth. For a full analysis of MET 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.