a worldbeating rally in chinese stocks has turned into the biggest rout globally shocking investors with the severity of its reversal and evading state efforts to slow the pace of losses in just 14 trading days the nation’s benchmark csi 300 index has plummeted 14 from a 13year high that compares with a 22 drop by the msci allcountry world index the plunge has wiped out more than 13 trillion of value and hammered the holdings of retail investors who piled in at the peak betting that the new lunar year of the ox or bull would be auspicious state intervention on tuesday briefly arrested the tumble before losses resumed