Zheng Quan Shi Bao Wang·2025-11-21 01:46Group 1 - In the past five trading days, a total of 218 companies were investigated by institutions, with a significant number of institutions focusing on Yutong Optical, Rongbai Technology, and Optoelectronics [1][2] - Among the companies investigated, 45 received attention from more than 20 institutions, with Yutong Optical being the most popular, attracting 167 institutions [1][2] - The types of institutions involved in the investigations included 199 securities companies, 143 fund companies, and 76 private equity firms [1] Group 2 - In terms of capital inflow, 15 out of the 20 companies that attracted more than 20 institutions saw net capital inflows, with Yinglian Co., Ltd. receiving the highest net inflow of 130 million yuan [1] - The stock performance of investigated companies showed that 10 out of them increased in value, with Rongbai Technology leading with a rise of 16.23% [2] - Conversely, 35 companies experienced declines, with World Co., Ltd. showing the largest drop of 16.55% [2]