Investors plowed more than $1 trillion into U.S.-based exchange-traded funds in 2024, shattering the previous record set three years ago and raising Wall Street hopes for an even bigger year ahead. Longer-term trends also played a role as investors extended a yearslong practice of swapping their mutual funds for the greater tax advantages and easy trading of ETFs. Total assets in U.S.-based ETFs reached a record $10.6 trillion at the end of November, according to monthly ETFGI data, an increase of more than 30% from the start of 2024.