The grades of four tech services stocks are better this week, according to the Portfolio Grader database. Every one of these stocks has an “A” (“strong buy”) or “B” overall (“buy”) rating.

Genpact Limited (G) is making progress this week as its rating of C (“hold”) from last week increases to a B (“buy”) rating this week. Genpact manages business processes for companies around the world. For more information, get Portfolio Grader’s complete analysis of G stock.

This week, ManTech International Corporation Class A’s (MANT) ratings are up from a C last week to a B. ManTech delivers a variety of information technology and technical services to United States federal government customers. For more information, get Portfolio Grader’s complete analysis of MANT stock.

This week, IGATE Corporation (IGTE) pushes up from a C to a B rating. iGATE provides IT and IT-enabled operations outsourcing solutions services to large- and medium-size organizations. For more information, get Portfolio Grader’s complete analysis of IGTE stock.

DST Systems, Inc. (DST) earns a B this week, jumping up from last week’s grade of C. DST Systems provides information processing and computer software services and products to the financial services industry, mutual funds and investment managers, and the healthcare, telecommunications, and service industries. For more information, get Portfolio Grader’s complete analysis of DST 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.