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The Whole Bond Market for a Slim Fee

IShares Core Total USD Bond Market ETF grants exposure to emerging-markets and high-yield bonds alongside high-quality, investment-grade fare, says Morningstar's Brian Moriarty.


The iShares Core Total USD Bond Market ETF, ticker IUSB, is the only ETF that tracks the Barclays U.S. Universal Bond Index, which is the parent index of the more commonly used Barclays U.S. Aggregate Bond Index.

While most of the fund is invested in high-quality, investment-grade debt, IUSB does have a roughly 16% allocation to the more volatile high-yield and emerging-markets sectors, which are excluded from ETFs that track the Aggregate index.

Brian Moriarty does not own (actual or beneficial) shares in any of the securities mentioned above. Find out about Morningstar’s editorial policies.