AT&T and T-Mobile create biggest US firm in $39bn deal
21 March 2011 Last updated at 19:07 GMT
Deutsche Telekom has sold T-Mobile USA to rival AT&T for $39bn, creating the largest US wireless network. The deal sent Deutsche Telekom shares surging.
They opened 16.3% higher - a record jump - and closed 11% up. In New York, AT&T shares gained 1.3%. The deal still needs approval from regulators
The BBC's Julia Caesar reports.