Regulators double daily trading band on Shenzhen’s US$1.3 trillion ChiNext board in latest move to support China’s tech companies

• Shares listed on Shenzhen’s ChiNext board will be allowed to rise or fall by 20 per cent every day starting from Monday, double the previous limit
• The relaxation is seen as a move by the regulator to further improve market efficiency and shore up hi-tech firms amid souring China-US relations