The grades of six capital markets stocks are on the rise this week on Portfolio Grader. Each of these stocks is rated an “A” (“strong buy”) or “B” overall (“buy”).

This week, TD Ameritrade Holding Corporation (AMTD) is showing good progress as the company’s rating jumps from a B (“buy”) last week to an A (“strong buy”). TD Ameritrade provides securities brokerage services and technology-based financial services to retail investors, traders, financial planners, institutions and business partners. In Portfolio Grader’s specific subcategory of Earnings Revisions, AMTD also gets an A. For more information, get Portfolio Grader’s complete analysis of AMTD stock.

This week, THL Credit (TCRD) pushes up from a B to an A rating. THL Credit is a management investment company that invests mainly in private subordinated debt, also known as mezzanine debt. For more information, get Portfolio Grader’s complete analysis of TCRD stock.

This week, LPL Financial Holdings Inc.’s (LPLA) ratings are up from a B last week to an A. 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.

This is a strong week for Ares Capital Corporation (ARCC). The company’s rating climbs to A from the previous 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) is bettering its rating of C (“hold”) from last week to a B (“buy”) this week. 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) earns an A this week, jumping up from last week’s grade of B. BGC Partners is a global inter-dealer broker that specializes in the brokering of OTC financial instruments and related derivative products. At $6.81, the stock is above the 50-day moving average of $6.74. For more information, get Portfolio Grader’s complete analysis of BGCP 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.