| 代码 | 名称 | 涨幅％v | 现价 | | --- | --- | --- | --- | | 301183 | 东田微 | +20.00% | 164.14 | | 300394 | 天孚通信 | +16.73% | 232.01 | | 301486 | 致尚科技 | +14.80% | 105.44 | | 301205 | 联特科技 | +11.78% | 135.51 | | 688498 | 源杰科技 | +11.70% | 668.99 | | 688205 | 德科立 | +11.51% | 135.49 | | 300757 | 罗博特科 | +11.10% | 240.30 | | 300620 | 光库科技 | +10.70% | 161.31 | | 688048 | 长光华芯 | +10.65% | 142.54 | | 001267 | 汇绿生态 | +10.03% | 20.30 | | 002792 | 通宇通讯 | +10.01% | 32.42 | | 003031 | 中瓷电子 | +10.01% | 59.37 | | 603738 | 泰晶科技 | +9.99 ...

Core Insights - The optical communication sector has seen a significant surge, with industry leaders like Zhongji Xuchuang and Tianfu Communication reaching historical highs, and several companies experiencing limit-up trading [1] - Major US companies such as Lumentum and Coherent have also reached historical highs, indicating a strong market trend towards optical connectivity [3] Group 1: Market Performance - On December 8, the optical communication sector collectively surged, with key players like Zhongji Xuchuang and Tianfu Communication hitting record highs [1] - Companies such as Huilv Ecology and Wantong Development also experienced limit-up trading, reflecting strong investor interest [1] Group 2: Industry Developments - Lumentum and Coherent reached historical highs on December 5, with LightCounting forecasting a continued shortage of EML and CW laser chips until the end of 2026 [3] - Marvell announced a $3.25 billion acquisition of Celestial AI to enhance its position in the optical connectivity market [3] Group 3: Supply Chain Insights - Optical isolators, crucial components in optical modules, are facing supply constraints due to a global shortage of Faraday rotator materials, which are monopolized by a few manufacturers in the US and Japan [4] - The demand for high-speed optical modules is surging, leading to a significant mismatch between supply and demand for isolators, which are expected to remain in short supply [4] Group 4: Future Projections - The demand for optical chips is projected to grow significantly, with LightCounting estimating a CAGR of 17% for the optical communication chip market from 2025 to 2030, increasing total sales from approximately $3.5 billion in 2024 to over $11 billion by 2030 [5] - Lumentum reported a 25%-30% supply gap in optical chips, with prices expected to rise by 2026 [5]

Group 1 - The CPO sector in the A-share market has experienced a significant surge, with multiple companies seeing substantial gains, including Tianfu Communication rising over 16% and several others exceeding 10% [1] - Notably, Tianfu Communication, Shijia Photon, Yongding Co., Zhongji Xuchuang, and Sruy New Materials have reached historical highs [1] - Driven by the demand for AI computing power, the global optical module industry is accelerating its upgrade to 800G/1.6T, with optical isolators becoming a critical component due to a global supply shortage of Faraday rotators [1] Group 2 - Guosheng Securities highlights that the continuous implementation of AI applications will further accelerate the construction of computing infrastructure, creating investment opportunities in the related industry chain [1] - The AIDC industry chain, including optical modules, PCBs, main equipment manufacturers, and copper cables, is expected to see rapid demand release, leading to a dual boost in performance and valuation [1] - Longcheng Securities recommends ongoing attention to these sectors as they serve as the fundamental support for computing power [1]

Group 1 - The communication equipment sector is experiencing a significant rise, with Tianfu Communication increasing by over 14% [1] - Tongyu Communication has reached its daily limit up [1] - Other companies such as Fenghuo Communication and Dekeli are also seeing gains [1]

（文章来源：每日经济新闻） 每经AI快讯，12月8日，算力硬件股震荡拉升，天孚通信大涨10%，汇绿生态、烽火通信、永鼎股份、 华工科技、德科立等纷纷走强。 ...

Group 1 - The total margin balance in A-shares is 24,816.76 billion yuan, a decrease of 21.94 billion yuan from the previous trading day, accounting for 2.57% of the A-share circulating market value [1][2] - The trading volume of margin financing and securities lending on that day was 1,794.53 billion yuan, an increase of 249.10 billion yuan from the previous trading day, representing 10.30% of the total A-share trading volume [1][2] Group 2 - Among the 31 primary industries in Shenwan, 11 industries experienced net financing inflows, with the computer industry leading with a net inflow of 999 million yuan [2] - Other industries with significant net financing inflows include defense and military, machinery and equipment, banking, non-banking financials, and agriculture, forestry, animal husbandry, and fishery [2] Group 3 - A total of 25 stocks had net financing inflows exceeding 100 million yuan, with Moer Thread leading at 1,701.21 million yuan [3][4] - Other notable stocks with high net financing inflows include Tianfu Communication, Guiding Compass, Dongfang Wealth, Shengtun Mining, Tonghuashun, Siling Co., International Composite Materials, Aerospace Power, and Industrial Securities [3][4]

从融资买入额占当日总成交金额比重来看，有9只个股融资买入额占比超30%。其中长虹华意、海阳科 技、华达科技融资买入额占成交额比重排名前三，分别为39.84%、34.16%、32.36%。 从融资净买入金额来看，有25只个股获融资净买入超亿元。其中，C摩尔-U、天孚通信、指南针融资净 买入金额排名前三，分别获净买入17.01亿元、4.99亿元、4.5亿元。 A股12月5日共有3739只个股获融资资金买入，有347股买入金额超亿元。其中，东方财富、新易盛、天 孚通信融资买入金额排名前三，分别获买入23.79亿元、22.94亿元、21.14亿元。 ...

Group 1: Optical Modules - The optical module industry is experiencing the highest growth and performance realization among AI hardware this year, driven by high verification barriers for North American CSP tech giants and increasing demand due to the acceleration of supernode technology [2][4] - The average ratio of optical modules to GPUs is continuously increasing, with demand for 800G and 1.6T optical modules being revised upwards, indicating a strong upward resonance in demand [2][4] - By 2026, the demand for 1.6T optical modules is expected to exceed 30 million units, with an average price of $900-1000 per unit, while high-end EML optical chips are projected to face a 25-30% supply shortage [4][5] Group 2: Liquid Cooling - The liquid cooling industry has seen fluctuating trends this year, with initial enthusiasm dampened by low penetration rates, followed by a resurgence in August and significant breakthroughs in November [5][9] - The demand for liquid cooling in North America is expected to expand rapidly by 2026, with penetration rates in the NVIDIA ecosystem projected to rise from 20-30% to over 80-90% [7][9] - A leading domestic manufacturer is anticipated to capture a market share of 13-17% in North America by 2026, with Google expected to implement liquid cooling solutions for over 200,000 TPU V7 chips, creating a market space exceeding $24-28 billion [9][10] Group 3: AI PCB - The AI PCB industry is thriving, with companies like Shenghong, Huidian, and Shengyi achieving performance realization in North America, despite some quarterly fluctuations [10][12] - The supply side is seeing an increase in product value and manufacturing difficulty due to upgrades in customer chips and cabinet solutions, leading to a marginal differentiation in the supply landscape [10][12] - By 2026, the introduction of orthogonal backplanes is expected to significantly increase unit value, with M9 material processing anticipated to break through, although mass production is expected to ramp up in 2027 [12][13] Group 4: Server Power Supply - The server power supply market has shown similar trends to liquid cooling, with initial excitement followed by a divergence in performance among manufacturers [13][14] - The supply side is dominated by Taiwanese manufacturers, with a high concentration of market share, while domestic manufacturers are expected to make significant breakthroughs in North America by 2026 [14][15] - The adoption of HVDC technology is projected to replace traditional UPS solutions, with an expected market scale exceeding $20-30 billion by 2026 [15]

Investment Rating - The report maintains a "Buy" rating for key companies in the optical communication sector, particularly focusing on the isolation component in optical modules [4][10]. Core Insights - The global optical module industry is rapidly upgrading to 800G/1.6T due to AI computing demand, with optical isolators becoming a critical bottleneck due to a global shortage of Faraday rotators [1][19]. - The production of Faraday rotators is highly concentrated and faces significant technical barriers, leading to supply constraints that impact the expansion of optical module capacity [21][24]. - The demand for optical isolators is expected to surge as the usage of optical modules increases, particularly in high-speed applications, which will drive both the quantity and value of isolators [6][22]. Summary by Sections Section: Optical Isolators as Key Components - Optical isolators function as essential passive components in optical communication systems, allowing light to transmit in one direction while blocking reverse reflections, thus protecting laser sources and enhancing system reliability [2][20]. - The core technology of optical isolators relies on the Faraday effect, with the Faraday rotator being a critical component that is currently in short supply globally [21][23]. Section: Supply Chain Challenges - The production of Faraday rotators is dominated by a few companies in the US and Japan, creating a monopolistic supply chain that poses risks for the optical isolator market [23][24]. - Domestic companies are striving to achieve self-sufficiency in the production of Faraday rotators, but the overall localization rate remains low, indicating a significant opportunity for growth in this area [23][24]. Section: Market Demand and Growth Potential - The transition of optical modules to higher capacities (800G/1.6T) is expected to increase the demand for optical isolators significantly, with each module requiring multiple isolators depending on the number of channels [6][22]. - The report highlights that the mismatch between the rapid increase in demand for isolators and the slow expansion of production capacity will lead to price increases and heightened value for isolators in the market [6][22]. Section: Recommended Companies - The report recommends focusing on leading companies in the optical communication sector, such as Zhongji Xuchuang, Xinyi Sheng, and Tianfu Communication, which are well-positioned to benefit from the growing demand for optical isolators [7][8][24].

Summary of Key Points Core Viewpoint - The report highlights significant net financing activities in the stock market, indicating investor interest in specific stocks and sectors [1] Group 1: Financing Activities - A total of 1,758 stocks received net financing inflows this week [1] - 781 stocks had net financing inflows exceeding 10 million [1] - 86 stocks had net financing inflows exceeding 100 million [1] - 2 stocks had net financing inflows exceeding 1 billion [1] Group 2: Top Gainers - C Moer-U topped the list with a net inflow of 1.701 billion [1] - Tianfu Communication, Sanhua Intelligent Control, and Industrial Fulian followed with net inflows of 1.197 billion, 829 million, and 803 million respectively [1] Group 3: Top Losers - Zhongji Xuchuang, Dongshan Precision, and Beijing Junzheng experienced the highest net outflows, with amounts of 1.225 billion, 956 million, and 443 million respectively [1]