CIG (06166) opened lower by more than 8%. As of the time of writing, the stock was down 8.35%, trading at HKD 85.65 with a turnover of HKD 4.8649 million. The company announced that it expects its net profit attributable to shareholders for the full year 2025 to be between RMB 252 million and RMB 278 million, representing a year-on-year increase of 51.19% to 66.79%. According to reports, CIG's net profit for Q3 2025 was RMB 138 million; based on this calculation, the estimated net profit for Q4 2025 ranges from a loss of RMB 7 million to a profit of RMB 19 million. The analyst consensus forecast for fourth-quarter net profit was RMB 139 million, indicating that the actual performance fell short of expectations. The announcement stated that the company's sustained performance growth continues to be driven directly by the synergistic development of its three core businesses: high-speed optical modules, broadband access, and wireless access. Among these, the high-speed optical module business has benefited from robust market demand fueled by artificial intelligence and the accelerated pace of global data center construction, coupled with the company's ongoing capacity planning, including the commencement of production at the new Jiashan base, production ramp-up at the Malaysia base, and planned capacity expansions at domestic and international facilities, leading to substantial year-on-year growth in both order size and shipment volume.