# iShares US Aggregate Bond UCITS ETF (IUAA) **Source:** https://fundology.uk/fund/iuaa · ISIN IE00BYXYYM63 · Data: TradingView (LSE closes and returns, delayed), issuer documents, ONS CPIH, FCA FIRDS ## At a glance > Capital at risk. Past performance is not a guide to future returns. The value of investments can fall as well as rise. As of 30/09/2026, IUAA (iShares US Aggregate Bond UCITS ETF, ISIN IE00BYXYYM63) closed at $5.56 on the London Stock Exchange. Its ongoing charge is 0.25% a year (about £25 on £10,000). Over the five years to 30/09/2026 its total return was −2.8%, or −24.0% after UK CPIH inflation. ## Summary iShares US Aggregate Bond UCITS ETF is an exchange-traded fund (ETF) from iShares, launched in 2017. It tracks the Bloomberg US Aggregate. You buy and sell it through a share-dealing account or platform during stock-market hours, like a share. Its ongoing charge is 0.25% a year — about £25 a year on every £10,000 invested, taken from the fund's value rather than billed to you. Income from its investments is reinvested inside the fund, so it shows up as a rising price rather than cash paid to you. Latest close: **$5.56** (30/09/2026). ## Key facts | Fact | Value | |---|---| | Ticker (LSE) | IUAA | | ISIN | IE00BYXYYM63 | | Category | Corporate & other bonds | | Type | ETF | | Provider | iShares | | Tracks | Bloomberg US Aggregate | | Income | Accumulating | | Ongoing charge | 0.25% a year (£25 per £10,000) | | Fund size | £2.5bn | | Launched | 2017 | | Domicile | Ireland | ## Past returns (periods to 30/09/2026) After the fund's ongoing charges. "Income reinvested" is total return; "price only" leaves out income paid out. Real returns are after ONS CPIH inflation. | Window | Return | After CPIH inflation | Measured as | |---|---|---|---| | 1 year | -0.84% | -3.95% | income reinvested | | 3 years | +3.29% | -6.79% | income reinvested | | 5 years | -2.78% | -24.00% | income reinvested | Returns: TradingView (delayed data). Inflation: ONS CPIH, latest month published. ## Calendar-year returns Calendar-year returns of iShares US Aggregate Bond UCITS ETF in pounds (price, with income reinvested in the fund): 2022 −2.3%, 2023 −0.8%, 2024 +2.2%, 2025 −0.4%; 2026 to 30/09/2026 −1.3%. Returns of iShares US Aggregate Bond UCITS ETF in pounds (price, with income reinvested in the fund) over the 12 months to 30/09/2026: −1.3%; to 30/09/2025: +2.6%; to 30/09/2024: +1.8%; to 30/09/2023: −9.8%; to 30/09/2022: +5.7%. | Year | Return | After CPIH inflation | Measured as | |---|---|---|---| | 2022 | -2.3% | -10.6% | Price | | 2023 | -0.8% | -4.8% | Price | | 2024 | +2.2% | -1.2% | Price | | 2025 | -0.4% | -3.8% | Price | | 2026 to 30/09/2026 | -1.3% | -4.1% | Price | ## Risk metrics | Window | Volatility | Max drawdown | |---|---|---| | 1 year | 6.56% | -4.65% | | 3 years | 7.36% | -8.51% | | 5 years | 7.98% | -12.66% | ## Largest fall Volatility of iShares US Aggregate Bond UCITS ETF in pounds, annualised from weekly returns to 30/09/2026: 6.6% over 1 year, 7.4% over 3 years, 8.0% over 5 years. Largest fall in the price of iShares US Aggregate Bond UCITS ETF since October 2021, in pounds: −12.7% from 30/09/2022 to 14/07/2023. The lowest 12-month return of iShares US Aggregate Bond UCITS ETF in pounds (price, with income reinvested in the fund) since January 2021 was −11.1% (12 months to 14/07/2023); the highest was +8.4% (12 months to 26/06/2026). On 30/09/2026 the price of iShares US Aggregate Bond UCITS ETF was 7.0% below its highest weekly close since October 2021 (30/09/2022), in pounds. ## Charges compared with similar funds Ongoing charge of iShares US Aggregate Bond UCITS ETF 0.25% a year, as of 01/10/2026: 168 of the 383 other corporate and other bond funds charge more, 33 the same and 182 less (share classes counted once). ## Funds tracking the same index 5 funds track Bloomberg US Aggregate, this one included and share classes counted once; their ongoing charges range from 0.17% to 0.30% a year (30/09/2026). | Fund | Ongoing charge | 1 year | 3 years | 5 years | |---|---|---|---|---| | iShares US Aggregate Bond UCITS ETF | 0.30% | -2.1% | +10.8% | -6.9% | | iShares US Aggregate Bond UCITS ETF | 0.30% | -5.9% | +4.3% | -14.2% | | iShares US Aggregate Bond UCITS ETF (this fund) | 0.25% | -0.8% | +3.3% | -2.8% | | iShares US Aggregate Bond UCITS ETF USD | 0.25% | -0.5% | +3.3% | -1.8% | | State Street SPDR Bloomberg U.S. Aggregate Bond UCITS ETF USD | 0.17% | -0.7% | +3.6% | -2.5% | Returns are the data vendor’s, in pounds, income reinvested unless marked "(price)". ## Charges & eligibility - Ongoing charges figure (OCF): **0.25%** per year - ISA eligible: yes - SIPP eligible: yes ## Top holdings Largest positions (as of 29/09/2026): | Holding | Weight | |---|---| | Treasury Note | 36.52% | | Treasury Bond | 8.68% | | Fnma 30YR Umbs | 5.84% | | Blk Ics USD Leaf Agency Dist | 4.00% | | Fhlmc 30YR Umbs Super | 3.14% | | Fnma 30YR Umbs Super | 2.11% | | Fhlmc 30YR Umbs | 2.03% | | Umbs 30YR Tba(Reg A) | 1.35% | | GNMA2 30YR 2021 Production | 1.20% | | Treasury Note (2OLD) | 1.19% | ## Where it invests Shares of the whole fund. Bonds, cash and positions the source does not classify are shown as they come, not guessed. ### By sector As published by iShares, as of 29/09/2026. | Sector | Weight | |---|---| | Treasury | 48.5% | | MBS Pass-Through | 22.7% | | Industrial | 14.1% | | Financial Institutions | 7.9% | | Utility | 2.4% | | Sovereign | 1.2% | | Supranational | 1.1% | | Cash and derivatives | 0.8% | | Other sectors | 1.4% | ### By type of asset Added up from the holdings iShares publishes, as of 29/09/2026. | Type of asset | Weight | |---|---| | Bonds | 83.8% | | Cash and money market | 4.1% | All 353 holdings: https://fundology.uk/fund/iuaa/holdings --- We show information. We are not financial advisers, not authorised by the FCA, and never recommend specific investments. Capital at risk. Past performance is not a guide to future returns. The value of investments can fall as well as rise.