longbridge-etf-flow US ETF capital-flow analysis — sector rotation signals from ETF inflows and outflows. Response language : match the user's input language — Simplified Chinese / Traditional Chinese / English. When to use Trigger on prompts asking about: - ETF-level capital flows — "XLK 资金流向" , "SPDR ETF flow" , "哪个板块 ETF 资金在流入" - Sector rotation signals via ETFs — "行业轮动信号" , "sector rotation signal" - Risk appetite from ETF volume — "避险情绪" , "risk-on / risk-off via ETF" - Thematic momentum — "科技 ETF 动量" , "tech ETF momentum" For individual stock capital flow defer to . For index constituen…