Studies show index funds now amplify rallies after cuts and cushion selloffs after hikes, altering how monetary policy transmits to markets. With a Fed cut expected, funds like TLT and LQD are in focus as investors position for lower yields and a potential risk-on tilt.

美国投资级公司债 - iShares

<p>研究表明，指数基金现在在降息后放大反弹，在加息后缓冲抛售，改变了货币政策如何传导到市场。随着美联储预计将降息，像 TLT 和 LQD 这样的基金受到关注，因为投资者正在为更低的收益率和潜在的风险偏好调整头寸</p>

ETF 从未如此繁荣——万亿美元的时刻即将来临