HNA has sold more than US$17 billion in assets this year — much of it coming from the sale of its holdings in Hilton Worldwide Holdings Inc. and its spinoffs — according to a Bloomberg tally. More disposals are on the way after the company agreed to unload billions of dollars worth of shares in Avolon Holdings Ltd. and the Radisson hotel chain. HNA is also seeking to sell buildings across America, London and China, people familiar with the matter have said.