Hong Kong's semiconductor sector experienced a downturn, with several key stocks posting significant losses. TianShu Intelligence (09903.HK) led the decline, falling over 10%. Montage Technology (06809.HK) saw a decrease of over 8%, while Novosense (02676.HK) dropped more than 6%. Additionally, SMIC (00981.HK), GigaDevice (03986.HK), and Hua Hong Semiconductor (01347.HK) each fell over 5%.