** Fresh drinks producer MIXUE Group's HKEX:2097 shares jump 9.4% to HK$587, on track for their biggest one-day pct rise since May 27
** Assembly toys developer Bloks Group HKEX:325 soars 18.9% to HK$187.9, a record high
** Ready-made beverages producer Guming Holdings HKEX:1364 jumps 7.7% to HK$28.55, on course for biggest one-day pct gain since June 4
** The Shanghai Stock Exchange included MIXUE, Bloks and Guming in the Southbound Stock Connect list under the Shanghai-Hong Kong Stock Connect effective June 9
** Hang Seng Commerce & Industry Index HSI:HSCI rises 1.7%, Hang Seng Index HSI:HSI adds 1.4%
** Bloks, Guming and MIXUE debuted in Hong Kong on Jan 10, Feb 12 and March 3, respectively