ETF周报：本周科创板ETF规模超越A500，成为第二大规模宽基ETF-20250602

• The report primarily focuses on the performance, scale changes, and valuation of various ETFs, including broad-based, sectoral, and thematic ETFs, during the week of May 26 to May 30, 2025[1][2][3] - Among broad-based ETFs, the CSI 1000 ETF achieved the highest weekly median return of 0.76%, while thematic ETFs like Military ETFs led with a median return of 2.07%[1][16] - Thematic ETFs such as Chip ETFs experienced the highest net inflows of 14.1 billion yuan, while sectoral ETFs like Technology ETFs saw the largest net inflows of 21.3 billion yuan during the week[2][30][32] - Valuation analysis indicates that broad-based ETFs like the ChiNext ETF have relatively low valuation percentiles, while thematic ETFs such as Alcohol and Photovoltaic ETFs also exhibit lower valuation percentiles compared to historical levels[3][33][43] - Financing and securities lending data reveal that the Sci-Tech Innovation Board ETF and ChiNext ETFs had the highest daily average financing purchase amounts, while the CSI 1000 ETF and CSI 300 ETF recorded the highest daily average securities lending volumes[4][45][47][51]