Keller Williams Realty has hired eXp Realty president Stacey Onnen as its head of new business operations, while eXp is looking to hire former KW CEO Mark Willis in an executive role. KW has filed a restraining order to prevent Willis from joining a competitor, alleging a potential sharing of trade secrets. KW continues an aggressive development of its business model to become more attractive to teams and agents in the wake of the rise of eXp Realty, fueled by a compelling, low-cost model. The hiring of Onnen away from eXp by KW, marks another step in increasing competition between the long-time leader, where eXp Realty founder Glenn Sanford got his real estate start, and the now formidable up-and-comer.