Summary of Key Points Core Viewpoint - On December 17, a total of 32 stocks were involved with institutional investors, with 18 showing net buying and 14 showing net selling. Group 1: Institutional Net Buying - The top three stocks with the highest net buying by institutions were: - Juguang Technology: Net buying amount of 291.32 million yuan, with a price increase of 17.34% [1][2] - ShenNan Circuit: Net buying amount of 173.44 million yuan, with a price increase of 10.00% [1][2] - Hualing Cable: Net buying amount of 124.66 million yuan, with a price increase of 5.21% [1][2] Group 2: Institutional Net Selling - The top three stocks with the highest net selling by institutions were: - Yingweike: Net selling amount of 220.25 million yuan, with a price increase of 10.00% [1][3] - XueRen Group: Net selling amount of 140.22 million yuan, with a price increase of 2.72% [1][3] - Guangxun Technology: Net selling amount of 124.14 million yuan, with a price increase of 10.01% [1][3]

Core Viewpoint - The demand for AI computing power is driving the need for efficient cooling solutions, with liquid cooling emerging as a market focus, leading to significant stock price increases for related companies. Group 1: Companies Leading in Liquid Cooling Solutions - Feilong Co., Ltd. (飞龙股份) has launched mass production of liquid cooling products for data centers, including electronic water pumps and temperature control valves for server applications, with a stock price increase of 10.01% to 27.59 yuan [1] - Invech (英维克) is developing cold plates and immersion liquid cooling technology, offering liquid cooling cabinets and comprehensive solutions for computing equipment and data centers, with a stock price rise of 10.00% to 92.95 yuan [1] - Yidong Electronics (奕东电子) acquired Shenzhen Guanding, a leading supplier of AI liquid cooling solutions, supplying products to major companies like Nvidia, Meta, and Google, with a stock price surge of 20.01% to 52.78 yuan [1] - Jiangnan New Materials (江南新材) has high-precision copper-based heat sink products applied in server liquid cooling, with a stock price increase of 10.00% to 75.33 yuan [1] - Dayuan Pump Industry (大元泵业) provides liquid cooling pumps and temperature control solutions, with business expected to double year-on-year by Q1 2025, and a stock price rise of 10.00% to 41.80 yuan [1] Group 2: Emerging Players in Liquid Cooling Market - Guanghua New Materials (华光新材) has begun mass supply of welding materials for liquid cooling servers, anticipating significant revenue in 2025, with a stock price increase of 18.34% to 55.30 yuan [2] - Tongfei Co., Ltd. (同飞股份) has launched plate-type and immersion liquid cooling products for data centers, planning to continue advancing its liquid cooling business, with a stock price rise of 14.46% to 81.36 yuan [2] - Zhongshi Technology (中石科技) is establishing a production line for liquid cooling modules, providing comprehensive solutions for multiple server companies, with a stock price increase of 11.51% to 46.80 yuan [2] - Dingtong Technology (鼎通科技) expects small batch shipments of liquid cooling radiators by Q2 2025, serving clients like Amphenol and Molex, with a stock price rise of 11.49% to 100.50 yuan [2] - Kexin Innovation Source (科创新源) has validated its liquid cooling modules for data centers, supplying condensers and evaporators, with a stock price increase of 11.02% to 53.18 yuan [2] - Siquan New Materials (思泉新材) is advancing product integration with major clients, having established a liquid cooling production line, with a stock price rise of 8.90% to 199.99 yuan [2] - Chuanhuan Technology (川环科技) has received UL certification for its liquid cooling server pipelines, entering the supply chain of major companies like Invech, with a stock price increase of 8.66% to 35.76 yuan [2] Group 3: Additional Notable Companies - Feirongda (飞荣达) has leading advantages in liquid cooling modules and has gained recognition from major industry clients, with a stock price increase of 8.36% to 29.55 yuan [3]

Group 1 - The liquid cooling server concept has seen a rise of 3.35%, ranking third among concept sectors, with 145 stocks increasing in value [1] - Notable stocks that hit the daily limit include Yidong Electronics with a 20% increase, and others like Feilong Co., Guangxun Technology, and Dayuan Pump Industry also reached their daily limits [1] - The leading gainers in the sector include Rongyi Precision, Huaguang New Material, and Tongfei Co., with increases of 19.13%, 18.34%, and 14.46% respectively [1] Group 2 - The liquid cooling server sector attracted a net inflow of 6.559 billion yuan, with 86 stocks receiving net inflows, and 20 stocks exceeding 100 million yuan in net inflows [2] - The top stock for net inflow is Zhongji Xuchuang, with a net inflow of 1.401 billion yuan, followed by Yingweike, Industrial Fulian, and Hengtong Optoelectronics with net inflows of 899.3 million yuan, 720 million yuan, and 605 million yuan respectively [2] - The highest net inflow ratios were seen in Feilong Co., Jiangnan New Material, and Guangxun Technology, with ratios of 59.50%, 21.72%, and 17.22% respectively [3] Group 3 - The liquid cooling server sector's performance is highlighted by stocks like Zhongji Xuchuang, Yingweike, and Industrial Fulian, which had daily increases of 6.92%, 10.00%, and 4.33% respectively [4] - Other notable performers include Guangxun Technology with a 10.01% increase and Hengtong Optoelectronics with an 8.84% increase [4] - Stocks such as Yidong Electronics and Feilong Co. also showed significant trading activity with high turnover rates [4] Group 4 - The overall market sentiment for the liquid cooling server sector is positive, with a significant number of stocks experiencing substantial gains and attracting considerable capital inflows [2][3] - The sector's growth is supported by technological advancements and increasing demand for efficient cooling solutions in data centers [1][2] - The performance of individual stocks within the sector indicates strong investor interest and potential for future growth [3][4]

截至12月17日收盘，中国AI 50概念上涨3.18%，位居概念板块涨幅第5，板块内，46股上涨，美年健 康、英维克等涨停，金盘科技、新易盛、麦格米特等涨幅居前，分别上涨9.64%、9.55%、8.22%。跌幅 居前的有中国移动、恒立液压、中国电信等，分别下跌0.66%、0.53%、0.30%。 今日涨跌幅居前的概念板块 | 概念 | 今日涨跌幅（%） | 概念 | 今日涨跌幅（%） | | --- | --- | --- | --- | | 共封装光学(CPO) | 3.76 | 海南自贸区 | -2.09 | | 铜缆高速连接 | 3.55 | 赛马概念 | -1.08 | | 液冷服务器 | 3.35 | 网约车 | -0.90 | | 金属铅 | 3.20 | 自由贸易港 | -0.90 | | 中国AI 50 | 3.18 | 军工信息化 | -0.70 | | AI PC | 3.11 | 转基因 | -0.65 | | 同花顺果指数 | 3.08 | 租售同权 | -0.64 | | 光纤概念 | 2.99 | 粮食概念 | -0.60 | | PET铜箔 | 2.73 | 生态农业 | -0. ...

英维克今日涨停，全天换手率8.43%，成交额66.01亿元，振幅5.67%。龙虎榜数据显示，机构净卖出 2.20亿元，深股通净卖出3578.46万元，营业部席位合计净买入1.57亿元。 深交所公开信息显示，当日该股因日涨幅偏离值达8.32%上榜，机构专用席位净卖出2.20亿元，深股通 净卖出3578.46万元。 证券时报·数据宝统计显示，上榜的前五大买卖营业部合计成交14.32亿元，其中，买入成交额为6.67亿 元，卖出成交额为7.66亿元，合计净卖出9870.06万元。 | 卖四 | 机构专用 | 2512.1 1 9133.60 | | --- | --- | --- | | 卖五 | 机构专用 | 0.00 8382.02 | （文章来源：证券时报网） 近半年该股累计上榜龙虎榜11次，上榜次日股价平均涨2.02%，上榜后5日平均涨6.80%。 资金流向方面，今日该股主力资金净流入8.93亿元，其中，特大单净流入9.55亿元，大单资金净流出 6202.32万元。近5日主力资金净流入15.37亿元。 融资融券数据显示，该股最新（12月16日）两融余额为34.02亿元，其中，融资余额为33.74亿元，融券 余 ...

Market Overview and Sector Characteristics - The Shanghai Composite Index closed up by 1.19%, while the Shenzhen Component Index fell by 2.40%, with the median change in A-shares being an increase of 0.61% [1] - A total of 49 stocks hit the daily limit up, an increase of 7 from the previous day, while 19 stocks hit the limit down, an increase of 4 [2] Industry Characteristics - The sectors with the most limit-up stocks today were communication equipment, specialized equipment, and general equipment [3] - In the communication equipment sector, 5 stocks reached the limit up, driven by accelerated 5G construction and AI computing demand [4] - The specialized equipment sector saw 4 stocks limit up, supported by policy backing and recovering orders [4] - The general equipment sector had 3 stocks limit up, boosted by policy support for equipment upgrades and enhanced manufacturing recovery expectations [4] Concept Characteristics - The most represented concepts among limit-up stocks were optical communication, liquid cooling servers, and consumer sectors [5] - In the optical communication concept, 7 stocks hit the limit up, benefiting from the explosive demand for AI computing and the acceleration of 800G optical module shipments [5] - The liquid cooling server concept also had 7 stocks limit up, as liquid cooling technology becomes the mainstream solution for heat dissipation due to AI computing demand [5] - The consumer sector had 6 stocks limit up, supported by policy stimulus and the year-end consumption peak, with strong expectations for consumer potential [5] Limit-Up Stock List - Among the limit-up stocks, 3 reached historical highs, including Yingweike, Ping An Electric, and Huanxu Electronics [6] - 10 stocks reached near one-year highs, including Shengtong Energy, Jiamei Packaging, and others [7][8] Main Capital Flow - The top 5 stocks with the highest net inflow of main capital among limit-up stocks were Yingweike, Guojiji Heavy Industry, Guangxun Technology, ShenNan Circuit, and Meinian Health [9][10] - The stocks with the highest net inflow as a percentage of market value included Wangzi New Materials, Nanjing Business Travel, and others [10] Continuous Limit-Up Situation - There were 41 first-limit stocks today, with 5 stocks achieving a second limit up and 3 stocks achieving three or more consecutive limit ups [11] - The top 5 stocks with the most consecutive limit ups included Baida Group, Shengtong Energy, and others [11]

市场全天震荡走强，创业板指大涨超3%。算力硬件股集体爆发，其中光通信方向，联特科技、长飞光纤等涨停，液冷服务器方向，英维克、中石科技等涨 停，PCB方向，深南电路尾盘涨停。锂矿股全天强势，盛新锂能、金圆股份等涨停。金融股午后拉升，华泰证券冲击涨停。下跌方面，海南板块下挫，京粮 控股、海南瑞泽跌停。个股涨多跌少，沪深京三市超3600股飘红，今日成交1.83万亿。 一、行情回顾 二、当日热点 日前中金公司认为，Google TPUv7 的推出，标志着ASICs集群在异于传统GPGPU的架构上加速自研，使得硬件价值上带来了异构与重塑，同时有望加速AI 算力硬件如PCB、液冷、电源等算力硬件市场规模的量价齐升。 1.液冷服务器 | 最新价 = 涨跌幅 = 涨停时间 = | 换手率 = | 流通市值 = | | | --- | --- | --- | --- | | | | | 公司的数据中心液 线;公司多个液冷 | | 27.59 +10.01% 09:30:00 | 3.89% | 150.20亿 | | | | | | 控阀系列产品已应 | | | | | 产 | | 92.95 +10.00% 11:25:24 ...

Core Viewpoint - Dongwu Securities report highlights that Invec is a leader in temperature control systems, with AI computing server liquid cooling creating a new growth driver. The company's main business operates steadily, and its product matrix is comprehensive [1] Financial Performance - In the first three quarters of 2025, the company achieved revenue of 4.026 billion yuan, a year-on-year increase of 40.19% [1] - The net profit attributable to the parent company reached 399 million yuan, reflecting a year-on-year growth of 13.13% [1] Market Position and Partnerships - The company has established itself as a stable partner for leading enterprises such as Huawei, ZTE, Tencent, and Alibaba due to its strong technological foundation [1] - As a domestic leader in temperature control systems, the company is making significant progress in introducing overseas computing power chains, leading the domestic market [1] Growth Potential - The continuous iteration of computing servers is expected to drive the expansion of the liquid cooling market, allowing the company to gradually realize its performance potential [1] - The report initiates coverage with a "buy" rating for the company, indicating positive future expectations [1]

Core Viewpoint - The market is experiencing fluctuations as the year-end approaches, with a focus on policy dividends and economic trends for the upcoming year [3]. Group 1: Market Performance - As of December 17, the Shanghai Composite Index rose by 0.06%, the Shenzhen Component Index increased by 0.62%, and the ChiNext Index gained 0.92% [1]. - The liquid cooling server concept continues to show strength, with stocks like Feilong Co. and Yingweike hitting the daily limit, while Yidong Electronics leads the gains [1][2]. - Lithium mining stocks are also on the rise, with Jinyuan Co. reaching the daily limit and other companies like Guocheng Mining and Dazhong Mining following suit [1]. Group 2: Sector Insights - The liquid cooling server sector is gaining traction, driven by the upcoming International AIDC Liquid Cooling Supply Chain Conference, highlighting the shift from air cooling to liquid cooling among major AI companies [2]. - Investment strategies are shifting towards low-value sectors, with a focus on non-bank financials, electric equipment, and AI applications [2]. Group 3: Future Outlook - Galaxy Securities anticipates that the market's fluctuating structure will continue, with a focus on policy dividends and economic trends for the next year [3]. - Key investment themes include the acceleration of global changes, the shift towards new productive forces, and the recovery of manufacturing and resource sectors [3]. - According to招商证券, investment opportunities will revolve around domestic demand recovery and technological self-reliance, with a balanced focus on cyclical stocks [4].

Macro Strategy - The core viewpoint indicates that the recent Federal Reserve interest rate cut and dovish signals from Powell have led to a decline in short-term U.S. Treasury yields, while concerns over AI investment bubbles have caused a downturn in U.S. stocks [1][15][16] - Analysts expect November non-farm employment to show a weak increase of 50,000 jobs, with a high standard deviation of 33,000, indicating significant market divergence [1][15][16] - The anticipated CPI for November is expected to be +3.1% year-on-year, with core CPI also at +3%, maintaining inflation around the 3% mark [1][15][16] Financial Products - The A-share market outlook suggests maintaining patience while waiting for stabilization in overseas markets, with a macro timing model score of -2 indicating a potential adjustment in the A-share index [2][17] - The report notes that the technology growth sector may regain attractiveness after adjustments in November, while the small and micro-cap sectors are viewed with caution [2][17] - Significant inflows into ETFs such as A500ETF and Sci-Tech 50ETF indicate some market optimism, despite ongoing concerns about AI investment bubbles [2][17] Industry Insights - The report highlights the PCB drilling process as a key beneficiary of high-end PCB development, recommending domestic leaders in drilling equipment and consumables [10] - The environmental industry is expected to benefit from the central economic work conference's focus on green transformation and energy independence, with investment opportunities in clean energy and recycling sectors [11][12] - The report emphasizes the importance of the "dual carbon" goals in driving the green transition, with specific recommendations for companies in clean energy and waste management sectors [12] Fixed Income - The fixed income report suggests that the bond market may not experience the same downward trend in interest rates as seen from 2022 to 2024, indicating a need for a more flexible approach to bond market operations [5][21] - The issuance of green bonds has increased significantly, with 29 new bonds issued in the week of December 8-12, totaling approximately 36.75 billion yuan, reflecting growing interest in sustainable finance [7] - The report also notes a substantial increase in secondary capital bonds, with a total transaction volume of approximately 329.2 billion yuan during the same period [8]