把握回调加仓机会？高“光”159363获资金爆买！机构称AI算力供不应求，光模块“卖铲人”逻辑持续强化

Core Viewpoint - The AI industry chain experienced a slight pullback after a surge, with mixed performance in optical module CPOs, while the A-share AI sector faced concerns over an "AI bubble" influenced by overseas market dynamics [3][9]. Market Performance - On December 18, the A-share AI sector saw a decline, with the ChiNext AI index dropping by 1.74%. Notable gainers included Changxin Bochuang, Liante Technology, and Jinxin Nuo, each rising over 2%, while Xinyi Sheng fell by 4.62% and Zhongji Xuchuang dropped over 3% [1][7]. - The largest and most liquid ChiNext AI ETF (159363) failed to turn positive in the morning and fell by 1.76% in the afternoon, with a trading volume of 629 million yuan. Despite this, there was a net inflow of funds, with a single-day net subscription of 200 million units, and a cumulative increase of over 260 million yuan in the previous five days [1][7]. Investment Opportunities - Institutions believe that the investment in AI computing power remains in a high growth phase, with a supply-demand imbalance in various segments of the AI computing chain. West Securities recommends focusing on opportunities arising from this supply-demand tension [3][9]. - Looking ahead to 2026, the evolution of large model capabilities and continuous penetration of applications are expected to sustain high investment in computing power. The discussion around CAPEX and short-term returns is prevalent, indicating ongoing high demand in the AI computing chain [3][10]. Sector Analysis - Industrial analysis suggests that the optical module and supporting supply chain may experience a divergence in expectations. The introduction of 1.6T optical modules is anticipated to drive significant demand in the coming year, with leading companies expected to maintain high growth [10]. - The ChiNext AI index has doubled in cumulative growth this year, significantly outperforming other AI-themed indices, indicating strong investment potential in the optical module-centric computing chain [10]. ETF Insights - The ChiNext AI ETF (159363) is the first ETF tracking the ChiNext AI index, with a current scale exceeding 3.6 billion yuan and an average daily trading volume of over 600 million yuan in the past month, ranking first among seven ETFs tracking the index [10].