The grades of 4 IT 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.

Interxion Holding N.V.’s (INXN) ratings are looking better this week, moving up to a A from last week’s B. Interxion Holding N.V. provides colocation services, equipment housing, connectivity services, managed services, and performance management. The company also gets A’s in earnings revisions and earnings momentum. For more information, get Portfolio Grader’s complete analysis of INXN stock.

CSP Inc. (CSPI) is seeing ratings go up from a C last week to a B this week. CSP Inc. engages in developing and marketing information technology (IT) integration solutions and high-performance cluster computer systems to industrial, commercial, and defense customers worldwide. The company also gets A’s in earnings momentum. For more information, get Portfolio Grader’s complete analysis of CSPI stock.

The rating of Information Services Group, Inc. (III) moves up this week, rising from a C to a B. Information Services Group, Inc. provides advisory, analytics, strategy, development, negotiation and implementation, enterprise resource planning, and business process transformation support services. The company also gets A’s in earnings growth. For more information, get Portfolio Grader’s complete analysis of III stock.

This is a strong week for JetPay Corp (JTPY). The company’s rating climbs to B from the previous week’s C. The company also gets A’s in sales growth. For more information, get Portfolio Grader’s complete analysis of JTPY 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.