Yandex N.V. (NasdaqGS:YNDX) is still thinking about holding an initial public offering (IPO) for Yandex.Taxi, will go public one day, the Russian internet company's Chief Operating Officer, Greg Abovsky, told Interfax on the sidelines of the World Economic Forum in Davos. But an IPO "is not an end in itself"-the company can remain a private one as a subsidiary of Yandex and Uber, or it could go public, Abovsky said.