CIG (06166) experienced a sharp intraday decline of nearly 9% during Hong Kong trading. At the time of writing, the stock was down 6.34%, trading at HK$135.9 with a turnover of HK$425 million. The drop follows the release of first-quarter 2026 results by Eoptolink Technology Inc.,Ltd., often referred to as the second-largest player in the optical module sector. During the reporting period, Eoptolink reported revenue of RMB 8.338 billion, a year-on-year increase of 105.76%. Net profit attributable to shareholders reached RMB 2.780 billion, up 76.80% compared to the same period last year. However, this figure represents a quarter-on-quarter decline of 13.25% from the RMB 3.205 billion net profit recorded in the fourth quarter of 2025. The financial report indicated that a significant surge in financial expenses was the primary factor negatively impacting Q1 profit margins. Market observers noted that consensus estimates for Eoptolink's full-year 2026 net profit had been in the range of RMB 9.7 billion to RMB 9.9 billion. Based on the typical pattern where the first quarter accounts for 30% to 35% of annual earnings, this implied an expected Q1 net profit between RMB 2.9 billion and RMB 3.4 billion, with moderately optimistic projections centered around RMB 3.2 billion to RMB 3.3 billion. The actual figure of RMB 2.780 billion fell short of these market expectations.