- China Evergrande shares surged as much as 42% on Tuesday after trade in the stock resumed.
- The stock was suspended last Thursday following news its chairman has been put under police surveillance.
- Trade in the debt-laden real-estate developer's shares has been very volatile since August.
Shares of embattled Chinese real-estate developer Evergrande surged as much as 42% in 15 minutes after the stock resumed trading on Tuesday.