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. In Portfolio Grader’s specific subcategory of Earnings Revisions, GFIG also gets an F. Shares of the stock have been changing hands at an unusually rapid pace, three times the rate of the week prior. For more information, get Portfolio Grader’s complete analysis of GFIG stock.

Slipping from a C to a D rating, Medallion Financial (TAXI) takes a hit this week. 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. To get an in-depth look at TAXI, get Portfolio Grader’s complete analysis of TAXI stock.

Affiliated Managers Group, Inc. (AMG) earns a D this week, falling from last week’s grade of C. 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 31.90. For more information, 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.