Nvidia tumbles as investors consider future without CEO Jensen Huang

The news is a blow to Jakarta's efforts to avoid a downgrade and retain its emerging-market status.

US says it is unlikely to strike Iran, but Tehran has vowed not to give up nuclear material.

Separately, CDL Hospitality Trusts said it will raise its payout ratio from 90% to 100% of distributable income.

Nvidia stabilised after two straight sessions of sharp declines.