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

This week, iGATE Computer Systems Ltd ADR (PTI) is making solid headway. The company’s rating improves to an A (“strong buy”) from last week’s B (“buy”) rating. PTI IS NOT A VALID TICKER ANYMORE. 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.

Automatic Data Processing, Inc. (ADP) is bumping up its rating from a C (“hold”) to a B (“buy”) this week. Automatic Data Processing provides its clients with business solutions related to such issues as payroll, tax and benefits. Shares of ADP have increased 6.7% over the past month, better than the 1.3% decrease the Nasdaq has seen over the same period of time. For more information, get Portfolio Grader’s complete analysis of ADP stock.

This is a strong week for Syntel, incorporated (SYNT). The company’s rating climbs to B from the previous week’s C. Syntel provides strategic Information Technology/Business Process Outsourcing solutions to Global 2000 companies. For more information, get Portfolio Grader’s complete analysis of SYNT stock.

Computer Sciences Corporation (CSC) boosts its rating from a B to an A this week. Computer Sciences offers services to clients in the commercial and government markets. For more information, get Portfolio Grader’s complete analysis of CSC stock.

This week, Cass Information Systems, Inc.’s (CASS) ratings are up from a C last week to a B. Cass Information Systems provides manufacturing, distribution, and retail enterprises to payment and information processing services. For more information, get Portfolio Grader’s complete analysis of CASS 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.