On January 18, the three major indexes of the Shanghai and Shenzhen Stock Exchanges staged a "V-shaped reversal" with the Shanghai Composite Index falling below 2800 points during the trading session. In the afternoon, the market launched a fierce counterattack with heavyweight stocks such as Industrial Fulian, Oriental Wealth, China International Travel Service, and Ningde Times rapidly rising, leading to a strong rebound in the three major stock indexes. Four Shanghai and Shenzhen 300 ETFs, including Trabendi Shanghai and Shenzhen 300 ETF (510300), showed significant trading volume, with a total trading volume exceeding 30 billion yuan for the day. Insiders revealed that today's actions are similar to previous ones and do not rule out the possibility of market stabilizing funds entering the market. Specifically, Huatai Bairui Shanghai and Shenzhen 300 ETF, Jiashi Shanghai and Shenzhen 300 ETF (015919), Yifangda Shanghai and Shenzhen 300 ETF (510310), and Huaxia Shanghai and Shenzhen 300 ETF (510330) had daily trading volumes of 15.26 billion yuan, 5.908 billion yuan, 5.667 billion yuan, and 4.355 billion yuan, respectively. The total trading volume of the four Shanghai and Shenzhen 300 ETFs reached nearly 31.2 billion yuan for the day. Among them, the largest-scale Huatai Bairui Shanghai and Shenzhen 300 ETF had a daily trading volume nearly four times that of the previous day, setting the second-highest historical record. Since the beginning of the year, despite the market continuing to adjust, onshore funds have been buying more through stock ETFs as they fall. Data from the Galaxy Securities Fund Research Center shows that on January 17, total funds in the stock ETF market netted in 10.312 billion yuan, while on January 16 it was 11.196 billion yuan. In fact, a similar situation occurred last year. On October 23, 2023, in the last 30 minutes before the close, wide-based index funds such as Huaxia SSE Shenzhen 50 ETF, Huaxia SSE 50 ETF, and Southern CSI 500 ETF all saw a rapid increase in trading volume, with a large amount of funds flowing in. On the evening of the 23rd, the China Investment Corporation announced that the Central Investment Corporation had bought exchange-traded open-index funds (ETF) that day and would continue to increase holdings in the future. Is there a similar influx of funds into the market this time? According to information obtained by Securities Times journalists from insiders, this possibility cannot be ruled out. Liu Jun, from Huatai Bairui Fund's Index Investment Department, mentioned that at the current time point, it is worth paying attention to the allocation value of the Shanghai and Shenzhen 300. From the perspective of its valuation, the PE (TTM) of the Shanghai and Shenzhen 300 is 10.52 times, at a low level of 1.47% percentile since 2019, which is relatively cost-effective. It is now more important to focus on the marginal changes in policies in February and March, making it a good time to position oneself.