Two listed companies recorded unusual trading moves at 10:21 am, according to ETNet. Duba (01753) rose 45.07% to HK$0.515, hitting a 52-week high. The stock has gained for two straight sessions and is up 66.13% over that period. Innovent Biologics (01801) fell 4.84% to HK$102.30, extending its decline to three sessions for a cumulative drop of 6.83%.