The overall ratings of three capital markets stocks are down on Portfolio Grader this week. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

This week, Affiliated Managers Group, Inc. (AMG) falls to a D (“sell”), worse than last week’s grade of C (“hold”). Affiliated Managers operates as an asset management company providing investment management services to mutual funds, institutional clients, and high net worth individuals in the United States. At $186.64, the stock is below the 50-day moving average of $190.05. The trailing PE Ratio for the stock is 30.00. For a full analysis of AMG stock, visit Portfolio Grader.

This week, GFI Group (GFIG) drops from a C to a D rating. GFI Group provides brokerage services and data and analytics products to institutional clients. The stock also gets an F in Earnings Revisions. At $3.65, the stock is under the 50-day moving average of $3.77. To get an in-depth look at GFIG, get Portfolio Grader’s complete analysis of GFIG stock.

The rating of Medallion Financial (TAXI) declines this week from a C to a D. Medallion Financial is a specialty finance company that originates and services loans financing the purchase of taxicab medallions and related assets. The stock also gets an F in Earnings Surprise. At $12.92, the stock is below the 50-day moving average of $13.66. For a full analysis of TAXI 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.