IDU Performance — iShares U.S. Utilities ETF
Data updated: 2026-09-23
IDU returned +4.84% year to date and +5.19% over one year to Jul 2026. Annualised returns are +13.23% over 3 years and +9.25% over 5 years. The fund trailed its Utilities Equity category average: $100 invested three years ago grew to $145, against $145 for the category, and to $105 over one year, against $107. Volatility over the past three years was 14.55% a year. In the 12 months to Jul 2026 the fund lost a net $72.5M, and assets reached $1.46B.
IDU Growth of $100
What $100 invested in iShares U.S. Utilities ETF grew to, compounded from monthly returns reported on SEC Form N-PORT, against the Utilities Equity category average over the same months.
| Period | IDU | Category average |
|---|---|---|
| 1 year (Aug 2025 – Jul 2026) | $105 | $107 |
| 3 years (Aug 2023 – Jul 2026) | $145 | $145 |
| 5 years (Aug 2021 – Jul 2026) | $156 | $156 |
| Since data start (Aug 2019 – Jul 2026) | $179 | $181 |
IDU Trailing Returns
Total returns to Jul 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | +4.84% |
| 1 year | +5.19% |
| 3 years (annualised) | +13.23% |
| 5 years (annualised) | +9.25% |
IDU Annual Returns
Calendar-year total returns of iShares U.S. Utilities ETF, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–Jul) | +4.84% |
| 2025 | +15.27% |
| 2024 | +23.24% |
| 2023 | −5.04% |
| 2022 | +0.21% |
| 2021 | +16.77% |
| 2020 | −1.04% |
| 2019 (Aug–Dec) | +9.30% |
IDU Monthly Returns
Monthly total returns as reported on SEC Form N-PORT.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | +1.4% | +9.9% | −3.3% | +1.9% | −5.2% | +2.9% | −2.1% | — | — | — | — | — |
| 2025 | +3.5% | +2.2% | +0.2% | +0.3% | +3.7% | −0.2% | +4.4% | −1.4% | +3.5% | +0.9% | +2.3% | −4.7% |
| 2024 | −2.5% | +2.4% | +6.7% | +1.2% | +8.2% | −4.6% | +5.7% | +4.8% | +5.5% | −0.8% | +4.3% | −8.2% |
| 2023 | −1.8% | −5.6% | +5.0% | +1.8% | −5.6% | +2.2% | +1.8% | −6.0% | −5.2% | +1.4% | +5.3% | +2.5% |
| 2022 | −3.9% | −2.2% | +10.0% | −3.8% | +3.7% | −5.2% | +6.0% | +0.7% | −10.8% | +1.8% | +7.0% | −1.4% |
| 2021 | −1.2% | −5.7% | +10.5% | +4.0% | −2.4% | −2.0% | +3.9% | +3.7% | −6.0% | +5.5% | −1.8% | +8.8% |
| 2020 | +6.1% | −10.2% | −10.0% | +3.2% | +4.2% | −4.8% | +7.3% | −2.6% | +0.5% | +4.7% | +1.7% | +0.8% |
| 2019 | — | — | — | — | — | — | — | +4.8% | +4.1% | −0.9% | −2.1% | +3.2% |
IDU Risk
Risk measures from monthly returns over Aug 2023 – Jul 2026.
- 3-year volatility (annualised): 14.55%
- 3-year Sharpe ratio: 0.60 (vs 4.5% risk-free rate)
- Best month: +9.87% (Feb 2026)
- Worst month: −8.20% (Dec 2024)
IDU Fund Flows
Monthly money in and out of iShares U.S. Utilities ETF, from SEC Form N-PORT.
- 12-month net flow: −$72.5M
- 12-month gross sales (incl. reinvestments): $1.4B
- Sales ÷ redemptions: 0.95×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| Jul 2026 | $114.4M | $17.3M | $97.1M |
| Jun 2026 | $5.6M | $62.1M | −$56.5M |
| May 2026 | $102.6M | $225.6M | −$122.9M |
| Apr 2026 | $192.6M | $251.1M | −$58.6M |
| Mar 2026 | $240.4M | $11.7M | $228.7M |
| Feb 2026 | $5.9M | $16.9M | −$11.0M |
| Jan 2026 | $0 | $327.7M | −$327.7M |
| Dec 2025 | $92.3M | $258.0M | −$165.6M |
| Nov 2025 | $384.7M | $11.2M | $373.5M |
| Oct 2025 | $34.2M | $168.4M | −$134.2M |
| Sep 2025 | $53.8M | $118.7M | −$64.9M |
| Aug 2025 | $169.6M | $0 | $169.6M |
IDU Assets Under Management
Net assets of iShares U.S. Utilities ETF by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-07-31 | $1.46B |
| 2026-04-30 | $1.62B |
| 2026-01-31 | $1.36B |
| 2025-10-31 | $1.51B |
| 2025-07-31 | $1.50B |
| 2025-04-30 | $1.43B |
| 2025-01-31 | $1.27B |
| 2024-10-31 | $1.46B |
| 2024-07-31 | $1.38B |
| 2024-04-30 | $873.08M |
| 2024-01-31 | $806.27M |
| 2023-10-31 | $805.61M |
For information only. Not investment advice: figures are as reported in SEC filings and may contain errors or be out of date. Past performance does not guarantee future results.