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

This week, Medallion Financial (TAXI) falls to a D (“sell”), worse than last week’s grade of C (“hold”). Medallion Financial is a specialty finance company that originates and services loans financing the purchase of taxicab medallions and related assets. In Portfolio Grader’s specific subcategory of Earnings Surprise, TAXI also gets an F. To get an in-depth look at TAXI, get Portfolio Grader’s complete analysis of TAXI stock.

GFI Group (GFIG) earns a D this week, falling from last week’s grade of C. GFI Group provides brokerage services and data and analytics products to institutional clients. The stock also rates an F in Earnings Revisions. Trade volume is up 694.8% from the previous week. For more information, get Portfolio Grader’s complete analysis of GFIG stock.

Affiliated Managers Group, Inc. (AMG) earns a D this week, moving down 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. Shares of the stock have been exchanging at an usually rapid pace, twice the rate of the week prior. The stock currently has a trailing PE Ratio of 31.80. 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.