The private equity firm would like to pull its European warehouse properties to create a new company. : (Bloomberg)—Blackstone Group LP plans to pool 6 billion euros ($6.8 billion) of its smaller European warehouse investments in a new company that will ultimately be publicly listed or sold. The private-equity giant is in the process of hiring an executive to run the company, which will manage its holdings of logistics properties close to towns and cities, according to people with knowledge of the matter.