This week, 6 Communications Equipment stocks are improving their overall rating on Portfolio Grader. Each of these rates an “A” (“strong buy”) or “B” overall (“buy”).

The rating of Arista Networks, Inc. (ANET) moves up this week, rising from a C to a B. The company also gets A’s in sales growth and earnings revisions. For more information, get Portfolio Grader’s complete analysis of ANET stock.

InterDigital, Inc. (IDCC) is seeing ratings go up from a C last week to a B this week. InterDigital, Inc. develops technology for advanced digital wireless telecommunications applications. The company also gets A’s in sales growth, earnings growth, earnings revisions, earnings surprise, return on equity, and free cash flow. For more information, get Portfolio Grader’s complete analysis of IDCC stock.

This is a strong week for Ciena Corporation (CIEN). The company’s rating climbs to B from the previous week’s C. Ciena Corporation provides communications networking equipment, software, and services that support the transport, switching, aggregation, and management of voice, video, and data traffic. For more information, get Portfolio Grader’s complete analysis of CIEN stock.

This week, CalAmp Corp. (CAMP) pushes up from a C to a B rating. CalAmp Corp. develops and markets wireless communications solutions that deliver data, voice, and video for critical networked communications and other applications primarily in the United States. The company also gets A’s in earnings revisions. For more information, get Portfolio Grader’s complete analysis of CAMP stock.

ClearOne, Inc. (CLRO) improves from a B to a A rating this week. ClearOne, Inc. develops and sells audio conferencing systems and related products for audio, video and web conferencing systems and applications. The company also gets A’s in operating margin growth, earnings growth, earnings revisions, and free cash flow. For more information, get Portfolio Grader’s complete analysis of CLRO stock.

Oclaro, Inc. (OCLR) shows solid improvement this week. The company’s rating rises from a B to a A. Oclaro, Inc. develops, manufactures, and provides optical solutions designs. For more information, get Portfolio Grader’s complete analysis of OCLR 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.