Today, the sse science and technology innovation board 50 index closed down 1.18%. There were no obvious hotspots in the market, with only 41 stocks experiencing a price change greater than 5%. The merger and restructuring concept stock He信仪器 was limit up at 20CM, and Chengdu Qinchuan IoT Technology Co., Ltd. and Xidi rose more than 4%. The biomedical sector was partially active, with Guangzhou LBP Medicine Science & Technology and Haobo rising more than 8%, Chison Medical Technologies and Olin Bio rising over 6%, and Maiwei Bio increasing more than 5%. On the downside, optics optoelectronics concept stock Dekeli and aviation concept stock Maixilin fell over 8%.