A taxi operated by Kakao Mobility Corp. drives through the streets of Seoul, in this file photo taken March 15, provided by the company. (Yonhap) Kakao Mobility Corp., South Korea's taxi-hailing and mobility platform, is said to have confidentially filed for an initial public offering in the United States, according to a financial market tracker Thursday.The subsidiary of Kakao Corp., the operator of South Korea's popular messenger app service KakaoTalk, seeks to raise about $1 billion in the filing reportedly made in June, with Bank of America, Morgan Stanley and UBS listed as underwriters, a newsletter published by IPOX LLC on June 13 said.The market tracker added that Kakao Mobility's US listing is due to South Korea's ban on subsidiary listings which came into effect early this month.The taxi-hailing app with more than 30 million users had previously attempted to list in the local market in 2022 but failed amid regulatory scrutiny.Kakao Mobility declined to comment regarding the US IPO. (Yonhap)