机构：当前债市下方仍然存在支撑，30年国债ETF(511090)上涨0.17%，成交额超18亿元

Core Viewpoint - The 30-year Treasury ETF (511090) is experiencing active trading and positive net inflows, indicating strong market interest despite a stable policy environment and limited expectations for short-term interest rate changes [1][2]. Group 1: Market Performance - As of June 11, 2025, the 30-year Treasury ETF has increased by 0.17%, with the latest price at 124.07 yuan [1]. - The ETF has a trading volume of 18.77 billion yuan, with a turnover rate of 10.24%, reflecting active market participation [1]. - The current size of the 30-year Treasury ETF is 182.87 billion yuan [1]. Group 2: Fund Flows - The latest net inflow for the 30-year Treasury ETF is 1.71 billion yuan, with 13 out of the last 21 trading days showing net inflows totaling 22.69 billion yuan, averaging 1.08 billion yuan per day [1]. Group 3: Economic Context - Current market conditions are characterized as a policy window period with a calm domestic news environment, and the implied expectations for interest rate cuts are low [1]. - Recent PMI data suggests that the economic fundamentals have not yet reached a turning point, and trade outlook remains uncertain, providing support for the bond market [1]. - Internationally, comments from Federal Reserve officials indicate that the path to interest rate cuts may not be smooth, with rates expected to remain elevated for an extended period [1]. Group 4: Investment Characteristics - The 30-year Treasury ETF closely tracks the China Bond 30-Year Treasury Index, serving as a benchmark for this category of bonds [2]. - The ETF is considered a valuable tool for portfolio management, offering low entry barriers for individual investors and high trading efficiency with T+0 transactions [2]. - Multiple market makers provide liquidity, ensuring that trades can be executed promptly without a lack of counterparties [2].