A roundup of tech ratings changes

|By:, SA News Editor

ServiceNow (NOW +2.5%) has been upgraded to Outperform by Northland.

OpenTable (OPEN +1.6%) has been upgraded to Overweight by Piper.

Portugal Telecom (PT) has been upgraded to Buy by Berenberg a day after getting cut to Neutral by Citi, and two days after announcing plans to merge with Oibr.

iGate (IGTE -3.1%) has been cut to Neutral by Nomura.

Acxiom (ACXM -1.1%) has been cut to Underperform by BMO.

Align Technology (ALGN -3.4%) has been cut to Neutral by Baird.

NXP (NXPI +0.7%) has been started at Outperform by Pac Crest.

Sensata (ST +0.9%) has been started at Outperform by Wells Fargo.

RingCentral (RNG +0.2%), which went public just a week ago, has been started at Outperform by Northland.