IYM Performance — iShares U.S. Basic Materials ETF
Data updated: 2026-09-23
IYM returned +14.82% year to date and +26.80% over one year to Jul 2026. Annualised returns are +9.97% over 3 years and +7.55% over 5 years. Against its Materials Equity category average the fund came out behind over three years but ahead over one: $100 invested three years ago grew to $133, against $133 for the category, and to $127 over one year, against $118. Volatility over the past three years was 17.21% a year. In the 12 months to Jul 2026 the fund took in a net $466.1M, and assets reached $1.16B.
IYM Growth of $100
What $100 invested in iShares U.S. Basic Materials ETF grew to, compounded from monthly returns reported on SEC Form N-PORT, against the Materials Equity category average over the same months.
| Period | IYM | Category average |
|---|---|---|
| 1 year (Aug 2025 – Jul 2026) | $127 | $118 |
| 3 years (Aug 2023 – Jul 2026) | $133 | $133 |
| 5 years (Aug 2021 – Jul 2026) | $144 | $147 |
| Since data start (Aug 2019 – Jul 2026) | $212 | $214 |
IYM Trailing Returns
Total returns to Jul 2026, from SEC N-PORT.
| Period | Total return |
|---|---|
| YTD | +14.82% |
| 1 year | +26.80% |
| 3 years (annualised) | +9.97% |
| 5 years (annualised) | +7.55% |
IYM Annual Returns
Calendar-year total returns of iShares U.S. Basic Materials ETF, compounded from monthly SEC N-PORT returns. Partial years show the months covered.
| Year | Total return |
|---|---|
| 2026 (Jan–Jul) | +14.82% |
| 2025 | +20.43% |
| 2024 | −4.53% |
| 2023 | +12.75% |
| 2022 | −9.06% |
| 2021 | +25.50% |
| 2020 | +17.84% |
| 2019 (Aug–Dec) | +5.81% |
IYM 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 | +10.6% | +10.9% | −6.5% | +3.1% | +1.8% | −2.5% | −2.1% | — | — | — | — | — |
| 2025 | +6.1% | +0.5% | −2.3% | −3.0% | +2.9% | +4.3% | +0.4% | +6.1% | −0.2% | −3.9% | +5.0% | +3.4% |
| 2024 | −3.5% | +4.0% | +7.0% | −4.5% | +3.5% | −3.7% | +3.1% | +1.3% | +3.0% | −3.1% | +1.5% | −11.7% |
| 2023 | +11.4% | −2.7% | −1.6% | −1.4% | −7.7% | +10.6% | +4.2% | −3.5% | −5.0% | −3.1% | +7.8% | +5.3% |
| 2022 | −6.5% | +4.4% | +9.5% | −5.7% | +0.7% | −16.4% | +5.7% | −3.2% | −9.7% | +9.7% | +11.6% | −5.1% |
| 2021 | −2.0% | +4.3% | +8.7% | +4.3% | +6.1% | −5.8% | +2.0% | +0.1% | −6.1% | +7.3% | −2.1% | +7.7% |
| 2020 | −7.5% | −8.6% | −16.1% | +17.4% | +7.7% | +2.4% | +7.4% | +4.3% | −0.9% | −1.5% | +13.7% | +3.1% |
| 2019 | — | — | — | — | — | — | — | −4.4% | +3.5% | 0.0% | +3.5% | +3.4% |
IYM Risk
Risk measures from monthly returns over Aug 2023 – Jul 2026.
- 3-year volatility (annualised): 17.21%
- 3-year Sharpe ratio: 0.32 (vs 4.5% risk-free rate)
- Best month: +10.89% (Feb 2026)
- Worst month: −11.74% (Dec 2024)
IYM Fund Flows
Monthly money in and out of iShares U.S. Basic Materials ETF, from SEC Form N-PORT.
- 12-month net flow: $466.1M
- 12-month gross sales (incl. reinvestments): $2.5B
- Sales ÷ redemptions: 1.23×
| Month | Sales | Redemptions | Net flow |
|---|---|---|---|
| Jul 2026 | $80.4M | $304.2M | −$223.9M |
| Jun 2026 | $382.3M | $334.9M | $47.4M |
| May 2026 | $202.6M | $346.5M | −$144.0M |
| Apr 2026 | $436.2M | $192.0M | $244.2M |
| Mar 2026 | $287.0M | $405.2M | −$118.3M |
| Feb 2026 | $315.8M | $35.2M | $280.5M |
| Jan 2026 | $419.9M | $107.7M | $312.2M |
| Dec 2025 | $100.7M | $164.0M | −$63.3M |
| Nov 2025 | $190.6M | $0 | $190.6M |
| Oct 2025 | $22.0M | $29.6M | −$7.5M |
| Sep 2025 | $29.6M | $67.0M | −$37.5M |
| Aug 2025 | $0 | $14.5M | −$14.5M |
IYM Assets Under Management
Net assets of iShares U.S. Basic Materials ETF by report date, from SEC N-PORT filings.
| Report date | Net assets |
|---|---|
| 2026-07-31 | $1.16B |
| 2026-04-30 | $1.53B |
| 2026-01-31 | $1.07B |
| 2025-10-31 | $498.62M |
| 2025-07-31 | $548.38M |
| 2025-04-30 | $483.95M |
| 2025-01-31 | $537.08M |
| 2024-10-31 | $567.47M |
| 2024-07-31 | $614.01M |
| 2024-04-30 | $648.81M |
| 2024-01-31 | $612.78M |
| 2023-10-31 | $623.65M |
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.