Dongguan Yutong Optical Technology Co.Ltd(300790) was surveyed by 53 institutions on January 18, 2022. Among them, there are 18 fund management companies, 15 securities companies, 10 investment companies and 7 asset management companies. Based on this research event, we found that the company’s main capital flow showed a net outflow of 4.40304 million yuan in the last five trading days. In the trend dimension, the stock prices operate below the 10th and 20th lines, and the market is not willing to do more.