The iShares Core Total USD Bond Market ETF (IUSB) is an exchange-traded fund designed to provide broad exposure to the U.S. dollar-denominated fixed-income market. The ETF is managed by BlackRock through its iShares platform and trades under the ticker IUSB on the Nasdaq.

Classified as a fixed-income ETF, the fund invests across multiple segments of the U.S. bond market, including Treasury securities, investment-grade corporate bonds, securitized assets, and other dollar-denominated fixed-income instruments.

The ETF follows a passive management approach and seeks to replicate the performance of the Bloomberg U.S. Universal Index, a benchmark designed to represent a broad cross-section of the U.S. bond market.

Diversification and sector exposure

IUSB provides exposure primarily associated with:

• U.S. Treasuries.

• Investment-grade corporate bonds.

• Mortgage-backed securities (MBS).

• Asset-backed securities (ABS).

• U.S. government agencies.

• Corporate credit.

• U.S. fixed-income markets.

• U.S. dollar-denominated debt.

The portfolio holds thousands of securities issued by governments, agencies, and corporations, providing diversified exposure across sectors, issuers, and credit profiles.

The ETF’s performance is closely tied to conditions in the U.S. fixed-income market, including interest-rate movements, credit-spread trends, and expectations for economic growth and inflation.

Structure and costs

IUSB shares trade on the secondary market on the Nasdaq during regular trading hours. Share creation and redemption occur through authorized participants, a mechanism intended to help align the ETF’s market price with its net asset value (NAV).

The fund charges a low management fee, consistent with the iShares Core product lineup, and does not apply a performance fee. Income generated by the underlying bond holdings may be distributed periodically to shareholders according to the fund’s distribution policy.

Because the ETF invests across multiple fixed-income sectors, it is exposed to interest-rate risk, credit risk, and duration risk, although the diversified nature of the portfolio helps reduce issuer-specific concentration.

History and evolution of the ETF

The iShares Core Total USD Bond Market ETF was launched in 2014 with the objective of providing investors with comprehensive exposure to the U.S. fixed-income market through a single investment vehicle.

Since inception, the fund has served as a diversified gateway to the U.S. bond market, encompassing government securities, corporate bonds, and securitized assets within a single portfolio.

In recent years, the ETF has reflected changing Federal Reserve policy cycles, developments in credit markets, and shifting expectations for inflation and economic activity across the United States.

Additional Information

iShares Core Total USD Bond Market ETF (United States) is an exchange-traded fund (ETF), with assets under management totaling $42.83 billion.

Over the past 12 months, iShares Core Total USD Bond Market ETF recorded a return of 3.82%, with its price trading between $45.42 and $47.20 during the same period.

The ETF is traded under the ticker IUSB.