GUOTAI HAITONG SECURITIES·2026-01-26 11:15Investment Rating - The report maintains an "Overweight" rating for the communication industry [4][18]. Core Insights - The communication industry saw a significant increase in fund holdings, with a market value share of 10.18% in Q4 2025, reflecting a quarter-on-quarter increase of 3.30 percentage points, ranking first among all sectors [2][6]. - The industry is expected to continue benefiting from developments in AI infrastructure and new connectivity, maintaining a high growth outlook despite current valuations being above historical averages [19]. - Key stocks in the communication sector are focused on the AI industry chain, with major holdings including Zhongji Xuchuang, Xinyi Sheng, and Tianfu Communication, which ranked as the top three in fund holdings by market value [9][19]. Summary by Sections Fund Holdings Overview - As of Q4 2025, the communication sector's fund holdings ranked among the top five sectors, alongside electronics, power equipment, non-ferrous metals, and non-bank financials [6]. - The top three stocks by fund holdings in the communication sector are Zhongji Xuchuang (¥162.18 billion, +45.51% QoQ), Xinyi Sheng (¥124.66 billion, +13.14% QoQ), and Tianfu Communication (¥19.45 billion, +0.73% QoQ) [9][19]. Investment Recommendations - The report recommends maintaining an "Overweight" rating for the communication industry, highlighting specific stocks for investment: 1. Optical Modules: Zhongji Xuchuang, Xinyi Sheng, Guangxun Technology, Huagong Technology 2. CPO/Silicon Photonics: Tianfu Communication, Shijia Photonics, Yuanjie Technology, Guangku Technology, Changguang Huaxin, Taicheng Light 3. PCB: Hudian Co., Shenzhen South Circuit 4. End-side: Guanghe Tong, ZTE Corporation 5. IDC/Liquid Cooling: Wangsu Technology, Aofei Data, Guanghuan New Network 6. Network Side: ZTE Corporation, Ruijie Networks, Unisplendour, Fenghuo Communication, Feiling Kesi 7. High-speed Copper Cables: Zhaolong Interconnect 8. Operators: China Mobile, China Telecom, China Unicom 9. Military Communication-related stocks: Haige Communication, Qiyi Er, Changying Tong 10. US stocks: Credo (CRDO), MaxLinear (MXL), Arista Networks (ANET), VNET Group (VNET), Coherent (COHR), Lumentum (LITE), Broadcom (AVGO), Marvell (MRVL), AXT (AXTI) [18]. Valuation Insights - The overall valuation of the communication sector is above the historical average, with a PE-TTM of 50x, placing it in the 86th percentile over the past decade. The sector is expected to maintain significant growth potential as it benefits from AI infrastructure and new connectivity developments [19].