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Fixed income

Aggregate bonds

Aggregate bonds refer to a broad category of fixed-income securities that encompass various types of bonds, including government bonds, corporate bonds, municipal bonds, and mortgage-backed securities. These bonds are grouped together to provide a comprehensive view of the bond market as a whole.


Aggregate bond indices

The term is often associated with indices, such as the Bloomberg US Aggregate Bond Index, which tracks the performance of the investment grade bond market in the US. These indices typically include securities with varying maturities and risk levels, offering a diversified snapshot of the bond market.

Purpose of aggregate bonds

Aggregate bonds are commonly used by investors, fund managers, and financial institutions to:

  • Benchmark the performance of the bond market

  • Diversify investment portfolios by including a mix of bond types

  • Track market trends, yields, and risks across different sectors


A long history of innovation

Credit investing

Key characteristics

  • Diversity: Aggregate bonds include a wide range of fixed income securities, ensuring broad market representation.

  • Focus on investment grade: Most aggregate bond indices focus on investment grade securities, excluding high yield bonds.

  • Market insight: They provide insights into interest rate trends, credit quality, and sector performance.


See also

High Yield Bonds Investment grade bonds


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In all cases where historical performance is presented, please note that past performance is not a reliable indicator of future results and should not be relied upon as the basis for making an investment decision. Investors may not get back the amount originally invested. Neither Robeco Institutional Asset Management B.V. nor any of its affiliates guarantees the performance or the future returns of any investments. If the currency in which the past performance is displayed differs from the currency of the country in which you reside, then you should be aware that due to exchange rate fluctuations the performance shown may increase or decrease if converted into your local currency. Robeco Institutional Asset Management B.V. (“Robeco”) expressly prohibits any redistribution of the Information without the prior written consent of Robeco. The Information is not intended for distribution to, or use by, any person or entity in any jurisdiction or country where such distribution or use is contrary to law, rule or regulation. Certain information contained in the Information includes calculations or figures that have been prepared internally and have not been audited or verified by a third party. Use of different methods for preparing, calculating or presenting information may lead to different results. Robeco Institutional Asset Management B.V. is authorised as a manager of UCITS and AIFs by the Netherlands Authority for the Financial Markets and subject to limited regulation in the UK by the Financial Conduct Authority. Details about the extent of our regulation by the Financial Conduct Authority are available from us on request.