A roundup of tech ratings changes

|By:, SA News Editor

Sprint (S +2.9%) has been upgraded to Buy by Nomura.

Open Text (OTEX +1.2%) has been upgraded to Neutral by Susquehanna.

Lumos Networks (LMOS +3%) has been started at Buy by Canaccord.

Mavenir Systems (MVNR +6%) has been started at Buy by Deutsche after posting its Q3 results.

Arris (ARRS +5.7%) has been started at Buy by Brean.

Tangoe (TNGO +3.6%) has been started at Buy by Roth.

Cabot Microelectronics (CCMP +1.9%) has been started at Buy by Needham.