Vaccine Maker Zhonghui Bio stock soared over 170% in Hong Kong's grey market trading. It will begin trading on Aug. 11.
The China-based vaccine maker launched its IPO last week, aiming to raise up to HK$518 million by offering 33.44 million H-shares at between HK$12.90 and HK$15.50 apiece.
The deal includes a Hong Kong public tranche of 3.34 million shares and an international offering of 30.10 million shares.
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