收盘｜沪指跌0.05%，可控核聚变概念掀涨停潮

Core Viewpoint - The stock market experienced a collective decline, with the Shanghai Composite Index down 0.05%, the Shenzhen Component down 0.41%, and the ChiNext Index down 0.8% on May 26. However, the controllable nuclear fusion concept saw a surge, leading to significant gains in related sectors such as superconductors, cloud gaming, titanium dioxide, and aviation transportation, while innovative pharmaceuticals and automotive sectors remained sluggish [1][2]. Sector Performance - The controllable nuclear fusion sector rose by 5.14%, with notable stocks like Haohan Huaton hitting a 20% limit up, Changfu Co. increasing over 16%, and Jiusheng Electric rising over 13% [4]. - The gaming sector also performed well, with stocks like Youzu Network hitting the limit up, and others like Ice River Network and Dihun Network increasing over 7% [5]. - In contrast, the chemical pharmaceutical sector faced declines, with Hai Chen Pharmaceutical dropping over 9%, and other companies like Keyuan Pharmaceutical and Hainan Hai Pharmaceutical falling over 7% [6]. Capital Flow - Main capital flows showed a net inflow into sectors such as electronics, machinery, and computers, while there was a net outflow from pharmaceutical biology, automotive, and banking sectors. Specific stocks like Wuhan Fanggu, Shanghai Electric, and Hongbo Co. saw net inflows of 510 million, 488 million, and 461 million respectively [8]. - Conversely, companies like BYD, Seres, and Kweichow Moutai experienced significant sell-offs, with net outflows of 1.036 billion, 778 million, and 599 million respectively [9]. Institutional Perspectives - Guotai Junan noted an increase in market volatility and a rise in risk-averse sentiment, suggesting a focus on defensive assets and a "barbell strategy" for investment, emphasizing both defensive sectors and technology growth [10]. - Bosheng Securities observed a market characterized by low volume and structural adjustments, while Huatai Securities recommended focusing on certainty amidst volatility, particularly in large financials, consumer sectors, and broad technology as mid-term themes [11].