The Blackstone Group, an investment banking powerhouse, has purchased Gateway Funding Services, Horsham, PA, and plans to use the nonbank as its platform to ramp up originations, servicing investments and MBS issuance, according to industry officials familiar with the situation. As Inside MBS & ABS went to press this week, the Blackstone Group had not responded to a media inquiry on the matter. Gateway also could not be reached, but according to ...