--- title: "The Shanghai Composite Index accelerated its adjustment in the afternoon, and the defense battle for the 3900-point level has begun again! The market index CSI 300 ETF is receiving much attention" type: "News" locale: "en" url: "https://longbridge.com/en/news/280569627.md" description: "On March 26, the A-share market experienced fluctuations, with the Shanghai Composite Index accelerating its adjustment in the afternoon, and the defense of the 3900-point level was once again launched. CMS pointed out that current trading is affected by geopolitical and potential \"stagflation\" risks, with volatility greater than trend. Small-cap risks are relatively high, while the concentration of mid and large-cap stocks is increasing, leading the market into a \"trading certainty\" phase. Investors can consider accumulating positions in the CSI 300 Index at lower prices, which covers multiple sectors including technology and finance, to diversify risks. The number of CSI 300 ETF products has reached 30, with ChinaAMC CSI 300 ETF having good liquidity and a management fee rate of 0.15%" datetime: "2026-03-26T05:19:14.000Z" locales: - [zh-CN](https://longbridge.com/zh-CN/news/280569627.md) - [en](https://longbridge.com/en/news/280569627.md) - [zh-HK](https://longbridge.com/zh-HK/news/280569627.md) --- # The Shanghai Composite Index accelerated its adjustment in the afternoon, and the defense battle for the 3900-point level has begun again! The market index CSI 300 ETF is receiving much attention On March 26, after a rapid recovery, the A-shares returned to volatility, with the Shanghai Composite Index accelerating its adjustment in the afternoon, and the defense of the 3900-point level was once again launched. China Merchants Securities published its latest asset allocation research viewpoint: current trading is concentrated on geopolitical issues and potential "stagflation" risks, with volatility exceeding trends. In terms of style, the current concentration of thematic trading has significantly diverged, and combined with signals of a converging valuation distribution, small-cap stocks face greater risks in the short term. In contrast, the concentration of mid and large-cap stocks has significantly increased, indicating that the market may have entered a "trading certainty" phase. Both large and small-cap styles are facing high cuts and low levels, and investors can take advantage of dips to allocate to the large-cap value style representative index—CSI 300, which covers leading sectors such as technology, cyclical, finance, and consumption, providing risk diversification, strong resilience, and shock resistance. It serves as a long-term holding base allocation tool for domestic and foreign institutions and is also the preferred asset for "quasi-stabilizing" funds in extreme market conditions. As of now, there are as many as 30 ETF products that passively track the CSI 300 Index, among which the CSI 300 ETF managed by China Asset Management (510330.SH) has better liquidity and the lowest management fee rate at 0.15% per year. Off-exchange fund investors can also invest in the China AMC CSI 300 ETF Connect C (005658.OF) at a low point, with no subscription fee, and no redemption fee after holding for more than 7 days ### Related Stocks - [513750.CN](https://longbridge.com/en/quote/513750.CN.md) - [159919.CN](https://longbridge.com/en/quote/159919.CN.md) - [159842.CN](https://longbridge.com/en/quote/159842.CN.md) - [06099.HK](https://longbridge.com/en/quote/06099.HK.md) - [512000.CN](https://longbridge.com/en/quote/512000.CN.md) - [000300.CN](https://longbridge.com/en/quote/000300.CN.md) - [512880.CN](https://longbridge.com/en/quote/512880.CN.md) - [510310.CN](https://longbridge.com/en/quote/510310.CN.md) - [512070.CN](https://longbridge.com/en/quote/512070.CN.md) - [000001.CN](https://longbridge.com/en/quote/000001.CN.md) - [510330.CN](https://longbridge.com/en/quote/510330.CN.md) - [510300.CN](https://longbridge.com/en/quote/510300.CN.md) - [600999.CN](https://longbridge.com/en/quote/600999.CN.md) ## Related News & Research - [Hanhua Financial Holding Sets Competitive Vote for Independent Director at Postponed EGM](https://longbridge.com/en/news/285921224.md) - [China’s April CPI rises to 1.2%; PPI surges to 2.8% on commodity spike](https://longbridge.com/en/news/285886848.md) - [China April producer inflation surges to 45-month high](https://longbridge.com/en/news/285865739.md) - [U.S. 1-year bills high rate 3.650%](https://longbridge.com/en/news/286126535.md) - [Orient Securities Plans Full Acquisition of Shanghai Securities via Share Issue and Cash](https://longbridge.com/en/news/285404300.md)