WEBtemasek .com .sg. Temasek Holdings (Private) Limited, or simply Temasek, is a Singaporean state-owned conglomerate owned by the Government of Singapore. Incorporated on 25 June 1974, Temasek has a net portfolio of US$287 billion (S$382 billion) as of 2023, with S$27 billion divested and S$31 billion invested during the year.