Be warned: Bull market will be recorded as one of great bubbles of financial history - legendary investor Grantham

GMO's Jeremy Grantham warned that a stock market bubble was about to burst in 2008. Now, he is warning that the 'long, long bull market since 2009 has finally matured into a fully-fledged epic bubble'. A historian of markets, Grantham says extreme overvaluation, explosive price increases, frenzied issuance and 'hysterically speculative investor behaviour' are among the warning signs. Learn more about your ad choices. Visit megaphone.fm/adchoices