A-share midday review: Three major indices fluctuate weakly, Deep Sea Technology and reducer concept surge

According to Jinshi Data on March 20, during the morning session on March 20, the three major indices experienced weak fluctuations. By the close of the morning session, the Shanghai Composite Index fell by 0.07%, the Shenzhen Component Index fell by 0.12%, and the ChiNext Index fell by 0.14%. On the market, the seafood sector surged strongly, with SKMIC, COFC, and BAIYANG hitting the daily limit; the reducer concept stocks continued to be active, with Zhongma Transmission, Donly, and Southern Precision hitting the daily limit; deep-sea technology, industrial mother machines, and AI glasses concept stocks were repeatedly active, while energy equipment, shipping, and steel sectors saw significant gains. The liquor and insurance sectors declined. The total market turnover for the half-day was approximately 880 billion yuan, with over 3,300 stocks rising