The grades of three Tech Services 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, iGATE Computer Systems Ltd ADR (NYSE:PTI) is making solid headway. The company’s rating improves to an A (“strong buy”) from last week’s B (“buy”) rating. Patni Computer Systems develops software and provides information technology services and business solutions. In Portfolio Grader’s specific subcategory of Cash Flow, PTI also gets an A. For more information, get Portfolio Grader’s complete analysis of PTI stock.

Acxiom (NASDAQ:ACXM) earns an A this week, jumping up from last week’s grade of B. Acxiom is a provider of marketing technology and services that allow marketers to manage audiences, personalize consumer experiences, and create profitable customer relationships. The stock price has risen 6.4% over the past month, better than the 3.7% increase the Nasdaq has seen over the same period of time. For more information, get Portfolio Grader’s complete analysis of ACXM stock.

Gartner‘s (NYSE:IT) gets a higher grade this week, advancing from a B last week to an A. Gartner provides research and analysis on the computer hardware, software, communications, and related information technology industries. Investors have pushed the stock price up 6.5% over the past month. For more information, get Portfolio Grader’s complete analysis of IT 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.