For the current week, the overall ratings of three capital markets stocks are worse, according to the Portfolio Graderdatabase. Each of these rates a “D” (“sell”) or “F” overall (“strong sell”).

Affiliated Managers Group, Inc.’s (AMG) rating falls to a D (“sell”) this week, down from C (“hold”) the week prior. 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. Shares of the stock are changing hands at twice the rate they were a week ago. The stock currently has a trailing PE Ratio of 31.70. To get an in-depth look at AMG, get Portfolio Grader’s complete analysis of AMG stock.

Slipping from a C to a D rating, GFI Group (GFIG) takes a hit this week. GFI Group provides brokerage services and data and analytics products to institutional clients. The stock also gets an F in Earnings Revisions. For a full analysis of GFIG stock, visit Portfolio Grader.

Medallion Financial (TAXI) gets weaker ratings this week as last week’s C drops 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 rates an F in Earnings Surprise. For more information, get Portfolio Grader’s complete analysis of TAXI 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.