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

This week, THL Credit (TCRD) is making solid headway. The company’s rating improves to an A (“strong buy”) from last week’s B (“buy”) rating. 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.

This week, Ares Capital Corporation (ARCC) pushes up from a B to an A rating. 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’s (COWN) grade is moving up to a B (“buy”) this week from last week’s C (“hold”). Cowen Group is a publicly owned asset management holding company. For more information, get Portfolio Grader’s complete analysis of COWN stock.

BGC Partners, Inc. Class A (BGCP) boosts its rating from a B to an A this week. BGC Partners is a global inter-dealer broker that specializes in the brokering of OTC financial instruments and related derivative products. For more information, get Portfolio Grader’s complete analysis of BGCP stock.

TD Ameritrade Holding Corporation (AMTD) earns an A this week, jumping up from last week’s grade of B. 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.

LPL Financial Holdings Inc. (LPLA) improves from a B to an A rating this week. 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.