Opendoor (OPEN) stock jumped more than 55% shortly after Thursday's opening bell on news that the company has hired Shopify's chief operating officer as the real estate platform's new chief executive. The company announced Wednesday night that Shopify (SHOP) COO Kaz Nejatian would be joining the beleaguered iBuyer as CEO, stepping in to replace the hole left by prior CEO Carrie Wheeler. The company also named co-founder Keith Rabois as chairman of the board and re-appointed co-founder Eric Wu, who left t ...