Markets advance as investors await new signals.

China reads its Caixin services and composite purchasing managers’
indices.

OVERVIEW
• US stocks gain as traders await new catalysts.
• The EU plans carbon market-linked import levy on steel and cement.
• Huawei unveils new software in a big bet on the consumer market.
• Oil advances with optimism growing around summer demand pickup.
• ECB says lack of official digital currency risks loss of control.