Serko Limited, known as Serko, is a travel management and expense technology company headquartered in New Zealand. Serko was publicly listed on the New Zealand Stock Exchange in June 2014 and on the Australian Stock Exchange in 2018 under the ticker code SKO. In October 2019, Booking Holdings purchased 4.7% as part of a partnership deal. In 2020 Serko won the New Zealand High-Tech Awards, winning company of the year. Wikipedia