China Unicom (00762) rose as much as 3% to HK$6 before ending up 2.9% at HK$5.995, with 17.26 million shares traded for HK$102 million, according to ETNet.

The stock's active buy-sell ratio was 77:23, with net active buying of HK$53.8 million. Barclays Asia was the largest net passive buyer at HK$2.9225 million, while China Investment Information was the largest net passive seller at HK$10.91 million.