Simpson Thacher & Bartlett and Freshfields Bruckhaus Deringer have landed the lead roles on Chinese technology giant Alibaba Group Holding Ltd.’s Hong Kong listing.

The New York-listed company’s secondary listing in Hong Kong could raise about $13 billion, according to media reports, making it the largest listing globally so far this year. Alibaba already holds the crown for the world’s largest listing ever for its $25 billion float on the New York Stock Exchange in 2014, though Saudi Arabian oil giant Aramco’s initial public offering on its domestic exchange next month is expected to be even bigger.