Worst day in 10 months for US stocks after Brexit decision

Wall Street has suffered its largest selloff in 10 months after Britain's decision to leave the European Union. In the busiest trading volume for a single session in nearly five years, financial stocks led the decline on the S&P 500 with a 5.4% decline - the largest for the sector since November 2011. The S&P 500 lost all the year's gains and suffered its largest decline since late August last year. Meanwhile the Dow Jones dropped 611 points, with both it and the S&P finishing about 3.5% lower. Many expect the next weeks to remain volatile.