Core Viewpoint - The article discusses the current state of the A-share market, particularly focusing on the "Yizhongtian" stocks, which are heavily influenced by AI computing power and have seen significant price increases. The article raises questions about whether these stocks are overvalued or undervalued and how investors should respond to the high valuations [1][2]. Industry Trends - The competition in AI computing power is not only about GPU capabilities but also about data transmission efficiency, where optical modules play a crucial role. The article compares GPUs to top chefs and optical modules to waitstaff, emphasizing the importance of efficient data transfer [2]. - The demand for optical modules is expected to rise due to the rapid development of AI, leading to upgrades in transmission speeds. The transition from 400Gb/s to 800Gb/s optical modules is already reflected in the performance of "Yizhongtian" stocks [3][5]. Performance Metrics - In the first half of 2025, the revenue and profit growth of key companies in the optical module sector were significant. For instance, Xinyi Sheng reported a revenue of 10.44 billion yuan, a year-on-year increase of 282.64%, while Zhongji Xuchuang's revenue was 14.79 billion yuan, up 36.95% [4]. - The sales volume of optical modules also showed strong growth, with Zhongji Xuchuang selling 9.05 million units, a 45.96% increase, and Xinyi Sheng selling 6.95 million units, a 112.53% increase [9]. Capital Expenditure Trends - Major tech companies are significantly increasing their capital expenditures, with a 69% year-on-year increase in Q2 2025, totaling $87.4 billion. This trend is expected to continue, with projected capital expenditures for major cloud providers reaching $333.8 billion in 2025 [10][11]. - Chinese internet giants are also ramping up their capital expenditures, with a 99.38% year-on-year increase in Q1 2025, totaling 55.01 billion yuan [11]. Future Projections - The market for 800G and 1.6T optical modules is expected to grow rapidly, with predictions indicating that the overall market size will exceed $22 billion by 2030 [5]. - By 2026, the performance of 1.6T optical modules is anticipated to start reflecting in the financial results of companies in the sector [8]. Valuation Considerations - Analysts have incorporated the expected performance from 1.6T optical modules and increased capital expenditures into their 2026 earnings forecasts, predicting significant profit growth for companies like Zhongji Xuchuang and Xinyi Sheng [16]. - The article suggests that the current market environment may allow for higher valuations, with a reasonable price-to-earnings (P/E) ratio for "Yizhongtian" stocks estimated between 30-40 times, potentially increasing to 40-50 times if liquidity improves [18][19].

Core Viewpoint - Coherent reported a strong quarterly revenue growth driven by its network business, but the revenue guidance for the next quarter fell short of analyst expectations, leading to investor concerns [2][3][4]. Group 1: Financial Performance - Coherent's Q4 revenue increased by 16% year-over-year to $1.53 billion, setting a record high [2]. - Adjusted earnings per share reached $1.00, exceeding Wall Street's expectation of $0.92 [2]. - The network business revenue surged by 39% year-over-year to $945 million, benefiting from the AI data center investment boom [3][7]. Group 2: Business Segments - The network business was the primary growth driver, with strong demand for high-bandwidth optical network equipment, particularly for 100/400/800Gb/s optical modules [7]. - Other segments, including materials and laser businesses, experienced an 8% decline year-over-year, offsetting the network business's strong performance [8]. Group 3: Future Outlook - Coherent anticipates continued growth in data center and communication businesses, driven by demand for 800Gb/s optical modules, 1.6Tb optical modules, optical circuit switches, and data center interconnects [9]. - Potential collaboration with Nvidia could open new long-term growth opportunities, as Coherent may supply new optical network switches for AI applications [10]. Group 4: Industry Context - The shift to optical networks over traditional copper lines presents advantages, particularly in energy efficiency, which is crucial for large AI data centers [11]. - Nvidia's new switch, announced in March, is expected to be 3.5 times more energy-efficient than traditional optical switches, indicating a significant market opportunity for Coherent [11][12].

Core Insights - Coherent's Q4 revenue reached a record high of $1.53 billion, a 16% year-over-year increase, with adjusted EPS of $1.00, surpassing Wall Street's expectation of $0.92 [1] - The company's network business saw a significant 39% year-over-year growth, driven by strong demand from AI data centers, generating $945 million in revenue [3][4] - Despite strong performance in the network segment, Coherent's revenue guidance for the next quarter fell short of analyst expectations, leading to a 19% drop in stock price post-earnings [1] Revenue Performance - Coherent's Q4 revenue was $1.53 billion, marking a 16% increase compared to the previous year [1] - The network business revenue reached $945 million, reflecting a 39% increase year-over-year, exceeding the expected $940 million [3] - Other business segments, including materials and lasers, experienced an 8% decline, offsetting the gains from the network business [3] Future Growth Drivers - The growth in the network business is expected to continue, driven by demand for 800Gb/s optical modules, 1.6Tb optical modules, optical circuit switches, and robust growth in data center interconnectivity [4] - Potential collaboration with Nvidia could open new long-term growth opportunities for Coherent, as Nvidia's new optical network switches aim to reduce energy costs in large data centers [5] - Nvidia's new switches are reported to be 3.5 times more energy-efficient than traditional optical switches, which may significantly impact future data center expenditures [5]