A high-yield municipal-bond fund run by Capital Group saw the biggest inflow of any US-based exchange-traded funds on Friday, with an infusion of $1.54 billion.
The Capital Group Municipal High-Income ETF had $241 million of assets on Thursday. One day later, that had jumped to $1.78 billion, a 639% gain, after the massive influx of cash, the data shows.
The influx was more than seven times the next largest gain among fixed-income ETFs — a $206 million inflow into a roughly $55 billion BlackRock Inc. offering that invests in short-term Treasuries, according to data compiled by Bloomberg. The entire US ETF universe totals about $12 trillion.
Bloomberg Markets
By Elizabeth Rembert
August 18, 2025