WPP's wholly-owned company, Possible, has acquired The Swift Collective in the US.Swift, which employs more than 70 people, is expected to generate revenues for 2014 of more than $13m.Swift is a digital agency that specializes in creative and strategy, branded content creation and social media.Its clients include HTC Corporation, Starbucks, Nestle USA and REI. "The acquisition continues WPP's strategy of investing in fast-growing markets and sectors such as mobile and digital," it said.