Simpson Thacher said it represented Alibaba Group Holding in connection with its initial public offering, the largest IPO ever conducted. The offering, which was comprised of 368,122,000 American depositary shares (ADSs), each representing one ordinary share of Alibaba Group, was listed on the New York Stock Exchange and raised a total of $25 billion in gross proceeds.

Credit Suisse Securities (USA), Deutsche Bank Securities, Goldman Sachs (Asia), J.P. Morgan Securities, Morgan Stanley & Co. International and Citigroup Global Markets acted as joint bookrunners for the offering.

Alibaba Group is the largest online and mobile commerce company in the world in terms of gross merchandise volume in 2013, which was $296 billion. Alibaba Group’s ADSs are listed under the trading symbol of “BABA.”

The Simpson Thacher team was led by Leiming Chen, Daniel Fertig and Bill Hinman, and included David Lee, Tianyi Chen and Bruce Sun (Corporate – Hong Kong); Kelli Schultz and Frederick De Albuquerque (Corporate – Palo Alto); Tristan Brown and Linda Barrett (ECEB – Palo Alto); Katharine Moir and Judy Yan (Tax – Palo Alto); Rob Holo (Tax – New York); and Lori Lesser (IP – New York).