Dhanabalan leaves at a high time for the firm, which records some S$215 ($173 billion) billion worth of assets in its portfolio as of 31 March. This is roughly S$17 billion higher than the previous year. He is the company's longest-serving chairman and will remain an honorary advisor after he steps down.

The chairman role is a non-executive position. 

Lim joined Temasek in 2012 after a 30-year stint in Singaporean politics.