The grades of 4 Communications Equipment stocks are on the rise this week on Portfolio Grader. Each of these stocks is rated an “A” (“strong buy”) or “B” overall (“buy”).

ViaSat, Inc. (VSAT) boosts its rating from a C to a B this week. ViaSat, Inc. designs, produces and markets innovative satellite and other wireless communication and networking systems for government and commercial customers. For more information, get Portfolio Grader’s complete analysis of VSAT stock.

This is a strong week for Ubiquiti Networks, Inc. (UBNT). The company’s rating climbs to A from the previous week’s B. Ubiquiti Networks, Inc. designs, manufacturers and sells innovative broadband wireless solutions worldwide. The company also gets A’s in earnings revisions, earnings momentum, and return on equity. For more information, get Portfolio Grader’s complete analysis of UBNT stock.

Cisco Systems, Inc. (CSCO) earns a B this week, jumping up from last week’s grade of C. Cisco Systems, Inc. sells networking and communications products, and is engaged in the design, manufacturing, and sales of Internet Protocol-based consumer electronics. The company also gets A’s in return on equity. For more information, get Portfolio Grader’s complete analysis of CSCO stock.

Infinera Corporation (INFN) shows solid improvement this week. The company’s rating rises from a C to a B. Infinera Corporation manufactures digital optical telecommunications equipment. The company also gets A’s in sales growth and earnings growth. For more information, get Portfolio Grader’s complete analysis of INFN 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.