This week, 11 Software stocks are improving their overall rating on Portfolio Grader. Each of these rates an “A” (“strong buy”) or “B” overall (“buy”).

This week, Splunk Inc.’s (SPLK) ratings are up from a C last week to a B. Splunk Inc. provides an innovative software platform that enables organizations to gain real-time operational intelligence by harnessing the value of their data. The company also gets A’s in sales growth, earnings revisions, and earnings surprise. For more information, get Portfolio Grader’s complete analysis of SPLK stock.

This is a strong week for CyberArk Software Ltd. (CYBR). The company’s rating climbs to A from the previous week’s B. The company also gets A’s in sales growth, operating margin growth, earnings growth, earnings revisions, and earnings surprise. For more information, get Portfolio Grader’s complete analysis of CYBR stock.

The rating of Digimarc Corporation (DMRC) moves up this week, rising from a B to a A. Digimarc Corporation provides media identification and management solutions to commercial entities and government customers in the United States and internationally. The company also gets A’s in earnings momentum. For more information, get Portfolio Grader’s complete analysis of DMRC stock.

Paylocity Holding Corp.’s (PCTY) 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 PCTY stock.

Bottomline Technologies (de), Inc. (EPAY) is seeing ratings go up from a B last week to a A this week. Bottomline Technologies (de), Inc. provides electronic payment, invoice, and document automation solutions. For more information, get Portfolio Grader’s complete analysis of EPAY stock.

Progress Software Corporation (PRGS) earns a B this week, jumping up from last week’s grade of C. Progress Software Corporation develops, markets, and distributes application development, deployment, and integration software to business, industry, and government worldwide. For more information, get Portfolio Grader’s complete analysis of PRGS stock.

Zendesk, Inc. (ZEN) boosts its rating from a C to a B this week. The company also gets A’s in sales growth, earnings revisions, and earnings momentum. For more information, get Portfolio Grader’s complete analysis of ZEN stock.

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

Rubicon Project, Inc. (RUBI) shows solid improvement this week. The company’s rating rises from a C to a B. The company also gets A’s in sales growth, earnings revisions, and earnings surprise. For more information, get Portfolio Grader’s complete analysis of RUBI stock.

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

SeaChange International, Inc. (SEAC) gets a higher grade this week, advancing from a C last week to a B. SeaChange International, Inc. is a developer, manufacturer, and marketer of digital video systems and services. The company also gets A’s in earnings revisions. For more information, get Portfolio Grader’s complete analysis of SEAC 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.