Satellite radio's XM, Sirius to merge

NEW YORK - XM Satellite Radio Holdings Inc. and Sirius Satellite Radio Inc. have agreed to merge.

The deal would consolidate the only two companies in the emerging business of subscription-only satellite radio, and is sure to face tough scrutiny from federal regulators. Investors and analysts have been speculating about a deal for months.

The two companies said in a statement that Mel Karmazin, the CEO of Sirius, would become chief executive of the new company while Gary Parsons, the chairman of XM, would remain in that role.