► Subscribe to the Financial Times on YouTube: http://bit.ly/FTimeSubs<br /><br />Eighteen months after making his first claims against Herbalife, hedge fund billionaire Bill Ackman made fresh allegations that the nutrition company is a global pyramid scheme.<br /><br />For more video content from the Financial Times, visit http://www.FT.com/video<br /><br />Twitter https://twitter.com/ftvideo<br />Facebook https://www.facebook.com/financialtimes