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

Steel Partners Holdings (SPLP) ups its rating to a B (“buy”) this week after earning a C (“hold”) in the week before. Steel Partners Holdings is a global diversified holding company engaged in multiple businesses. In Portfolio Grader’s specific subcategory of Cash Flow, SPLP also gets an A. Shares of the stock have been changing hands at an unusually rapid pace, up 1054.3% from the week prior. For more information, get Portfolio Grader’s complete analysis of SPLP stock.

McGraw Hill Financial, Inc. (MHFI) improves from a C to a B rating this week. McGraw Hill Financial provides credit ratings, benchmarks, and analytics to capital and commodity markets worldwide. For more information, get Portfolio Grader’s complete analysis of MHFI stock.

Voya Financial, Inc. (VOYA) shows solid improvement this week. The company’s rating rises from a C to a B. For more information, get Portfolio Grader’s complete analysis of VOYA stock.

Berkshire Hathaway Inc. Class B (BRK.B) is making headway this week, with the company’s rating improving to an A (“strong buy”) from a B (“buy”) last week. Berkshire Hathaway is a publicly owned investment manager that primarily engages in the insurance and reinsurance of property and casualty risks business. For more information, get Portfolio Grader’s complete analysis of BRK.B 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.