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”).

GFI Group (GFIG) is on the decline this week, earning a D (“sell”) after receiving a C (“hold”) last week. GFI Group provides brokerage services and data and analytics products to institutional clients. GFIG also rates an F in Portfolio Grader’s specific subcategory of Earnings Revisions. To get an in-depth look at GFIG, get Portfolio Grader’s complete analysis of GFIG stock.

This is a rough week for Medallion Financial (TAXI). The company’s rating falls to D from the previous week’s C. 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.

The rating of Affiliated Managers Group, Inc. (AMG) declines this week from a C to a D. 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. The stock currently has a trailing PE Ratio of 28.10. To get an in-depth look at AMG, get Portfolio Grader’s complete analysis of AMG 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.