Hashkey's Hong Kong-listed shares opened as high as HK$7.80, but have since fallen back to HK$6.76.

According to Futu data, Hashkey Holdings (03887.HK) shares opened higher in Hong Kong, reaching around HK$7.80 before falling back to HK$6.76, with a market capitalization of HK$18.693 billion. Previously, its grey market price had surged over 13%, pushing its market capitalization to around HK$21 billion.