[1] Hempton was educated at Sydney Boys High School and received a Bachelor in Economics from the University of Adelaide in 1991.
Between 1998 and 1999 Hempton was the Chief Analyst of Tax Policies in New Zealand Treasury,[3] In 1999 he joined Platinum Asset Management which was started by billionaire Kerr Neilson.
[1] The company manages over US$1 Billion dollars for investors including the former Australian Prime Minister Malcolm Turnbull.
Ackman announced as US$1 billion short on Herbalife in late 2012 claiming that the company was a pyramid scheme preying on low income earners.
[4] In 2018 Ackman exited his near billion-dollar investment position against Herbalife after the company's stock price continued to rise.