Billionaire Bill Ackman warns of a fundamental imbalance in the US stock markets, with increasing speculation and sharp price fluctuations. The founder of Pershing Square tells CNBC that the markets are back to resembling casinos, with leverage reaching 95%.

Billionaire Bill Ackman warns of a fundamental imbalance in the US stock markets, with increasing speculation and sharp price fluctuations. The founder of Pershing Square tells CNBC that the markets are back to resembling casinos, with leverage reaching 95%.