6 Software stocks are moving up in their overall rating this week, according to the Portfolio Grader database. Every one of these is graded an “A” (“strong buy”) or “B” overall (“buy”).

This week, Adobe Systems Incorporated (ADBE) pushes up from a B to a A rating. Adobe Systems Incorporated is a global software company that offers creative, business, web, and mobile software and services. The company also gets A’s in sales growth, operating margin growth, earnings growth, and earnings revisions. For more information, get Portfolio Grader’s complete analysis of ADBE stock.

CDK Global Inc (CDK) improves from a C to a B rating this week. The company also gets A’s in earnings growth, earnings momentum, and return on equity. For more information, get Portfolio Grader’s complete analysis of CDK stock.

The rating of Cheetah Mobile, Inc. ADR Class A (CMCM) moves up this week, rising from a C to a B. The company also gets A’s in sales growth and earnings surprise. For more information, get Portfolio Grader’s complete analysis of CMCM stock.

Silver Spring Networks, Inc.’s (SSNI) ratings are looking better this week, moving up to a A from last week’s B. The company also gets A’s in sales growth. For more information, get Portfolio Grader’s complete analysis of SSNI stock.

iDreamSky Technology Ltd. Sponsored ADR Class A (DSKY) boosts its rating from a B to a A this week. The company also gets A’s in sales growth and earnings momentum. For more information, get Portfolio Grader’s complete analysis of DSKY stock.

Covisint Corp. (COVS) earns a B this week, jumping up from last week’s grade of C. For more information, get Portfolio Grader’s complete analysis of COVS 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.