Tech ratings changes: EA, Tableau, Teradata, Dassault, Vimpelcom

|By:, SA News Editor

Electronic Arts (EA +0.5%) has been upgraded to Buy by BofA/Merrill following yesterday's mixed FQ3 results and FY14 guidance cut. The upgrade has helped EA turn positive.

Tableau (DATA +1.2%) has been upgraded to Buy by Goldman ahead of its Feb. 4 Q4 report.

Teradata (TDC -2.7%) has been cut to Sell by Goldman ahead of its Feb. 4 Q4 report.

Dassault (DASTY +1.2%) has been upgraded to Buy by BofA/Merrill. Q4 results are due on Feb. 6.

Vimpelcom (VIP -3.6%) has been cut to Neutral by HSBC.

Digital Realty (DLR -2.6%) has been cut to Underperform by Macquarie. Q4 results are due on Feb. 24.