Aabaco"Yahoo stockholders will get shares in the new entity,
Aabaco Holdings Inc., which will hold nearly 384 million shares in Alibaba, according to documents filed Friday with regulators. That stake is currently worth about $32 billion."
link-
https://ca.finance.yahoo.com/news/yahoo-files-papers-alibaba-spinoff-acknowledges-irs-reviewing-221532811.html
"Yahoo won't proceed without assurances the deal is tax-free for investors, but Aabaco could be liable if authorities ultimately determine that taxes are owed."