This week, six capital markets stocks are improving their overall rating on Portfolio Grader. Each of these rates an “A” (“strong buy”) or “B” overall (“buy”).

This week, THL Credit (TCRD) is showing good progress as the company’s rating jumps from a B (“buy”) last week to an A (“strong buy”). THL Credit is a management investment company that invests mainly in private subordinated debt, also known as mezzanine debt. In Portfolio Grader’s specific subcategory of Sales Growth, TCRD also gets an A. For more information, get Portfolio Grader’s complete analysis of TCRD stock.

Ares Capital Corporation’s (ARCC) ratings are looking better this week, moving up to an A from last week’s B. Ares Capital is a specialty finance company that invests mainly in first- and second-lien senior loans and mezzanine debt, which in some cases includes equity components like warrants. For more information, get Portfolio Grader’s complete analysis of ARCC stock.

Cowen Group, Inc. Class A (COWN) ups its rating to a B (“buy”) this week after earning a C (“hold”) in the week before. Cowen Group is a publicly owned asset management holding company. For more information, get Portfolio Grader’s complete analysis of COWN stock.

This week, BGC Partners, Inc. Class A (BGCP) pushes up from a B to an A rating. BGC Partners is a global inter-dealer broker that specializes in the brokering of OTC financial instruments and related derivative products. Shares of the stock have been trading at an exceptionally rapid pace, up threefold from the week prior. For more information, get Portfolio Grader’s complete analysis of BGCP stock.

TD Ameritrade Holding Corporation (AMTD) gets a higher grade this week, advancing from a B last week to an A. TD Ameritrade provides securities brokerage services and technology-based financial services to retail investors, traders, financial planners, institutions and business partners. For more information, get Portfolio Grader’s complete analysis of AMTD stock.

This is a strong week for LPL Financial Holdings Inc. (LPLA). The company’s rating climbs to A from the previous week’s B. LPL Financial Holdings offers technology, brokerage and investment advisory services through business relationships with all types of financial advisors. For more information, get Portfolio Grader’s complete analysis of LPLA 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.