US Bond Funds Attract Record $625 Billion in Inflows Amid Rising Yields

In a remarkable turn of events, US bond funds recorded $625 billion in net inflows over the 12 months ending August 2026, marking the highest annual total since at least 2010. This surge in capital comes despite the fact that bond holders have faced losses, with the iShares Core US Aggregate Bond ETF (AGG) dropping approximately 4% and the iShares 20+ Year Treasury Bond ETF (TLT) declining about 6.9% during the same period.

August proved to be particularly significant, as taxable-bond funds attracted $69 billion in new investments, making it the fourth consecutive month where inflows exceeded $60 billion. This trend mirrors only one other instance on record, which occurred during the early pandemic in 2020.

Long-term US funds collectively garnered $100 billion in inflows in August, with taxable bonds accounting for nearly 70% of that total, solidifying fixed income as a dominant force in fund flows. Bond ETFs alone saw inflows between $55 billion and $57 billion for the month, contributing to a year-to-date total of approximately $407 billion.

Despite the 10-year Treasury yield reaching around 5%, the highest level since 2023, investors continue to show a preference for shorter-duration bonds. Ultrashort bond funds led the inflow categories with $15 billion in August, indicating a strategic shift among investors towards less risky assets.