S&P's Cameron Drinkwater discusses how perpetual futures are going mainstream in the US. 

<p>S&amp;P's Cameron Drinkwater discusses how perpetual futures are going mainstream in the US.&nbsp;</p>

With more than more than 25 years' experience reporting on consumer affairs, business and politics, Garth Bray brings you today's business news, direct from the Herald NOW studio. 

<p>With more than more than 25 years' experience reporting on consumer affairs, business and politics, Garth Bray brings you today's business news, direct from the Herald NOW studio.&nbsp;</p>