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, Proofpoint, Inc. (PFPT) pushes up from a B to a A rating. Proofpoint, Inc. provides threat protection, regulatory compliance, archiving and governance, and secure communication solutions worldwide. The company also gets A’s in sales growth. For more information, get Portfolio Grader’s complete analysis of PFPT stock.

The rating of Fortinet, Inc. (FTNT) moves up this week, rising from a B to a A. Fortinet, Inc. provides network security solutions. The company also gets A’s in sales growth. For more information, get Portfolio Grader’s complete analysis of FTNT stock.

Aspen Technology, Inc. (AZPN) boosts its rating from a C to a B this week. Aspen Technology, Inc. is a global provider of mission-critical process optimization software solutions, which are designed to manage and optimize plant and process design, operational performance, and supply chain planning. For more information, get Portfolio Grader’s complete analysis of AZPN stock.

This is a strong week for Cadence Design Systems, Inc. (CDNS). The company’s rating climbs to A from the previous week’s B. Cadence Design Systems, Inc. licenses software, sells or leases hardware technology, and provides engineering and education services throughout the world to help manage and accelerate electronics product development processes. The company also gets A’s in operating margin growth and earnings growth. For more information, get Portfolio Grader’s complete analysis of CDNS stock.

This week, RingCentral, Inc. Class A’s (RNG) ratings are up from a B last week to a A. The company also gets A’s in sales growth, earnings revisions, and earnings surprise. For more information, get Portfolio Grader’s complete analysis of RNG stock.

Yodlee Inc (YDLE) is seeing ratings go up from a C last week to a B this week. For more information, get Portfolio Grader’s complete analysis of YDLE stock.

Rubicon Project, Inc. (RUBI) earns a A this week, jumping up from last week’s grade of B. The company also gets A’s in sales growth and earnings revisions. For more information, get Portfolio Grader’s complete analysis of RUBI stock.

Park City Group, Inc. (PCYG) shows solid improvement this week. The company’s rating rises from a C to a B. Park City Group, Inc. provides software and consulting services for business productivity. For more information, get Portfolio Grader’s complete analysis of PCYG stock.

BSQUARE Corporation’s (BSQR) ratings are looking better this week, moving up to a A from last week’s B. BSQUARE Corporation provide software and engineering services to companies that develop smart devices and to companies that assist others in developing smart devices. The company also gets A’s in sales growth, earnings growth, return on equity, and free cash flow. For more information, get Portfolio Grader’s complete analysis of BSQR stock.

A10 Networks, Inc. (ATEN) gets a higher grade this week, advancing from a C last week to a B. The company also gets A’s in earnings revisions and earnings surprise. For more information, get Portfolio Grader’s complete analysis of ATEN stock.

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