A股突发！沪指失守3400点

Market Overview - The three major stock indices experienced a downward trend, with the Shanghai Composite Index falling by 0.68% to 3380.82 points, the Shenzhen Component Index down by 1.62% to 10186.45 points, and the ChiNext Index decreasing by 1.91% to 2043.25 points. The total trading volume in the Shanghai and Shenzhen markets was 11906 billion, a decrease of nearly 1600 billion from the previous day [1]. Synthetic Biology Sector - The synthetic biology concept saw a strong rally, with Bawei Co. hitting a 30% limit up, and companies like Qingsong Co., Chuaning Biology, and Jiega Co. also reaching 20% limit up. Huisheng Biology increased by over 10% [4][5]. - Institutions noted that with increasing environmental awareness and consumption upgrades, the market demand for bio-based materials, pharmaceutical intermediates, and food additives is continuously growing, providing a broad market space for synthetic biology companies [7]. Shipping Sector - The shipping concept continued to show strength, with companies like Nanjing Port, Ningbo Shipping, and Ningbo Ocean achieving limit up. Nanjing Port rose by 10.06% to 9.30, while Ningbo Shipping and Ningbo Ocean also saw significant gains [9][11]. - Following the latest adjustments in US-China tariff policies, many foreign trade companies in regions like Shanghai and Jiangxi have resumed exports to the US, leading to a surge in shipping demand. Container booking from China to the US has reportedly increased by nearly 300% [12]. Military Industry - Certain military stocks experienced a resurgence, with companies like Wande Co. rising over 28%, and others such as Suzhou Longjie and Chengfei Integration hitting limit up. Chengfei Integration has achieved limit up for seven consecutive trading days [15][17]. - Companies in this sector have reported that their production and operational activities are normal, with no significant changes in market conditions or industry policies [17].