A roundup of tech analyst ratings changes

|By:, SA News Editor

3D Systems (DDD) and Stratasys have been started at Buy by Citi. DDD +2.3%. SSYS +2.5%.

Altera (ALTR) has been upgraded to Buy by Citi.

Adobe (ADBE) has been upgraded to Outperform by Pac Crest.

PC-Tel (PCTI) has been upgraded to Buy by Wunderlich.