Those assets aren't part of the Verizon deal. After the Verizon deal closes, Yahoo will be renamed Altaba, a holding company. "We anticipate that the Altaba management will squarely focus on maximizing the tax efficiency of any disposal of its Alibaba and Yahoo Japan stakes post the core sale," Sheridan said in a report. "Based on our extensive expert conversations, we believe there are precedent tax-efficient structures that could reasonably be pursued." IBD'S TAKE : Alibaba stock has shot up nearly 39% in 2017, a boon to the new Altaba when the Verizon deal closes. Alibaba stock is extended, though, and way above a buy point of 104.67. Alibaba is on the IBD Leaderboard and ranks No. 2 in IBD's Retail-Internet group, behind Mercadolibre. Learn more at IBD Stock Checkup. Altaba's holdings also will include cash and securities worth about $13 billion. "The possibility of a federal tax cut provides additional optionality for tax efficiency," Sheridan said.