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”).

KKR Financial Holdings (NYSE:KFN) is making headway this week, with the company’s rating improving to an A (“strong buy”) from a B (“buy”) last week. KKR Financial is a specialty finance company with expertise in a range of asset classes. The stock’s trailing PE Ratio is 5.50. For more information, get Portfolio Grader’s complete analysis of KFN stock.

PHH Corp. (NYSE:PHH) is seeing ratings go up from a B last week to a A this week. PHH is an outsource provider of mortgage and vehicle fleet management services. For more information, get Portfolio Grader’s complete analysis of PHH stock.

Marlin Business Services (NASDAQ:MRLN) earns a A this week, jumping up from last week’s grade of B. Marlin Business Services is a nationwide provider of equipment leasing solutions primarily to small businesses. Shares of MRLN have increased 12.7% over the past month, better than the 0.3% the Nasdaq has seen over the same period of time. For more information, get Portfolio Grader’s complete analysis of MRLN stock.

NewStar Financial (NASDAQ:NEWS) is bumping up its rating from a C (“hold”) to a B (“buy”) this week. NewStar Financial offers flexible debt capital solutions to mid-sized corporations, real estate borrowers, securities issuers, and asset aggregators. Wall Street seems to agree with the upgrade and has propelled the stock up 8.3% over the past month. For more information, get Portfolio Grader’s complete analysis of NEWS 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.