► Subscribe to the Financial Times on YouTube: http://bit.ly/FTimeSubs<br /><br />Masayoshi Son, SoftBank’s founder and chief executive, is betting that Arm is 43 per cent more valuable than the market thinks it is. Robert Armstrong examines whether he's right or wrong. <br /><br />For more video content from the Financial Times, visit http://www.FT.com/video<br /><br /><br />Twitter https://twitter.com/ftvideo<br />Facebook https://www.facebook.com/financialtimes
