金工ETF点评：行业主题ETF周净流出262.29亿元，钢铁、基础化工拥挤变幅较大

Investment Rating - The report indicates a net outflow of 26.229 billion yuan from industry-themed ETFs this week, with significant fluctuations observed in the steel and basic chemical sectors [2][31][36]. Core Insights - As of March 20, 2026, there are a total of 1,456 listed ETFs in mainland China, with a total scale of 5.10 trillion yuan. Among these, stock ETFs account for the largest share, both in number (1,140) and scale (2.95 trillion yuan) [7][8]. - The A-share market saw a decline this week, with the Shanghai Composite Index closing at 3,957.05, reflecting a drop of 3.38%. Notably, the communication and banking sectors experienced gains of 2.10% and 0.36%, respectively, while the non-ferrous and basic chemical sectors faced declines of 11.82% and 10.53% [13][14][21]. - In terms of fund flows, broad-based ETFs saw a net inflow of 9.078 billion yuan, with the top three inflows coming from the CSI 500 ETF Southern (+4.450 billion yuan), the CSI 300 ETF Huatai-PB (+4.333 billion yuan), and the SSE 50 ETF (+3.056 billion yuan). Conversely, industry-themed ETFs experienced a net outflow of 26.229 billion yuan, with the top outflows from the chemical ETF (-4.373 billion yuan) and the non-ferrous metal ETFs [31][32][36]. Summary by Sections ETF Market Overview - As of March 20, 2026, the total number of ETFs is 1,456, with stock ETFs being the most prevalent, comprising 78.30% of the total number and 57.76% of the total scale [7][8][10]. Domestic and International Equity Market Index Performance - The A-share market indices showed a downward trend, with the Shanghai Composite Index down 3.38%. The communication and banking sectors were the only ones to show positive performance this week [13][14][21]. Stock ETF Fund Flows - Broad-based ETFs had a net inflow of 9.078 billion yuan, while industry-themed ETFs saw a significant net outflow of 26.229 billion yuan, indicating a shift in investor sentiment [31][32][36]. Industry Congestion Monitoring - The report highlights that the utility and communication sectors are currently experiencing higher congestion levels, while the automotive and textile sectors are less congested, suggesting potential investment opportunities [34][36].