No luck for two market debutants CaoCao and XJ Electrics as both stocks tumbled

The Hang Seng Index gained 0.8 per cent to 24,379.86 at 10.11am local time, heading for the highest close since March 19. The Hang Seng Tech Index rallied 1.9 per cent. On the mainland, the CSI 300 Index added 0.1 per cent while the Shanghai Composite Index was little changed.

Alibaba Group Holding advanced 1.7 per cent to HK$114.60 and Tencent Holdings climbed 0.3 per cent to HK$511. China’s biggest chipmaker SMIC jumped 3.6 per cent to HK$43.20 and Macau casino operator Sands China appreciated 4 per cent to HK$16.32.

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