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US Bond ETFs Attract $54 Billion in August

By Markets Desk · 2026-09-19 · 1 min read
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Inflows into US bond ETFs reached nearly $54 billion in August. Core and core-plus strategies accounted for $8.5 billion of that total. Investors are seeking steady income as yields remain elevated.

US bond ETFs recorded inflows of approximately $54 billion in August. Core and core-plus bond ETFs captured $8.5 billion of that amount. These funds serve as a defensive component for portfolios during market volatility. They also provide predictable income streams for holders.

Dan Sotiroff, associate director of US passive strategies research at Morningstar, explains the distinction between active and passive strategies. Passive funds track broad indices like the Bloomberg Aggregate Index. Active funds deviate from these benchmarks to seek outperformance. Both approaches target intermediate core-bond categories.

Active Managers Take Credit Risks

Active managers assume higher credit risk to generate additional yield. They may invest in bonds that are difficult to trade or mispriced. Passive indices remain conservative and do not cover the entire market. Active strategies aim to capture alpha through these deviations.

The primary goal of these funds is to act as a core portfolio holding. They provide ballast and reduce overall portfolio risk. Bonds generally exhibit lower risk than equities. Investors should view these instruments as long-term stabilizers rather than short-term trading vehicles.

Index Composition Excludes Liquid Assets

Broad bond market indexes are heavily weighted toward US Treasuries. Treasuries currently represent approximately 40 percent of these indices. These are the least risky bonds in the market. Excluding less liquid assets keeps index risk profiles low.

Some bond types trade infrequently and are excluded from standard indexes. This exclusion limits the diversification potential of passive funds. Active managers can access these less liquid segments. This access allows for potential yield enhancement that passive funds cannot achieve.

Fees Impact Net Returns

Expense ratios matter regardless of the management style. Lower costs provide a consistent advantage over time. Investors should prioritize funds with reduced fees. This discipline applies to both active and passive bond strategies.

The bond market offers active managers a specific edge. Index constraints prevent passive funds from exploiting certain market inefficiencies. Active managers can navigate these constraints. Choosing lower-cost options remains the most straightforward way to protect returns.

Based on reporting by morningstar.com, compiled by the Tradingbird desk.

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