IYMvsXLBETF Comparison
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iShares U.S. Basic Materials ETF (IYM) and State Street Materials Select Sector SPDR ETF (XLB) belong to the same industry segment: US Materials. IYM's top 3 sector exposures are Materials and Industrials. In contrast, XLB's top sector exposures are Materials IYM is more expensive with a Total Expense Ratio (TER) of 0.38%, versus 0.08% for XLB. IYM is up 20.24% year-to-date (YTD) with +$817M in YTD flows. XLB performs worse with 15.09% YTD performance, and +$1.27B in YTD flows. Run a side-by-side ETF comparison of IYM and XLB below, and assess how they stack up in performance, liquidity, risk, exposure, holdings, and more, helping you select the best ETF for your investments.
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IYM vs XLB performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 04/24/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | IYM XLB | +9.37%+7.22% | +5.40%+4.29% | +20.24%+15.09% | +43.06%+27.23% | +46.37%+35.57% | +51.91%+37.62% |
| Flows | IYM XLB | +$441M+$627M | +$512M+$1.16B | +$817M+$1.27B | +$912M+$1.18B | +$564M+$314M | +$691M-$1.36B |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | IYM XLB | +23.38%+19.30% | +17.93%+16.37% | +18.03%+16.96% | +20.29%+18.88% |
| Max drawdown | IYM XLB | -13.67%-12.34% | -13.67%-12.34% | -23.58%-23.18% | -29.91%-24.78% |
| Max drawdown duration | IYM XLB | 53d72d | 53d72d | 352d445d | 709d679d |
Trading data
IYM | XLB | |
Last sale 4/24/2026 at 1:30 PM | $184.45 | $51.92 |
| Previous close 04/23/2026 | $183.18 | $51.81 |
| Consolidated volume 04/23/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of March 31, 2026
1-year trailing difference
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IYM | XLB | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 4/24/2026 at 1:30 PM
Live
Closed
IYM | XLB | |
|---|---|---|
| Last price | $184.45 | $51.92 |
| 1D performance | +0.69% | +0.21% |
| AuM | $1.65 B | $7.42 B |
| E/R | 0.38% | 0.08% |
Characteristics
IYM | XLB | |
|---|---|---|
| Management strategy | Passive | Passive |
| Provider | iShares | State Street Investment Management |
| Benchmark | Russell 1000 Basic Materials RIC 22.5/45 Capped Gross Index | S&P Materials Select Sector Index |
| N° of holdings | 36 | 24 |
| Asset class | Equities | Equities |
| Trailing 12m distribution yield | Join | Join |
| Inception date | June 12, 2000 | December 16, 1998 |
| ESG | No | No |
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Exposure
Countries
IYM
USA
73.53%
Ireland
20.29%
Other
6.18%
XLB
USA
73.34%
Ireland
21.54%
Other
5.12%
Sectors
IYM
Materials
65.5%
Industrials
8.86%
Other
25.64%
XLB
Materials
80.45%
Other
19.55%
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Diversification
IYM
Total weight of top 15 holdings out of 15
77.27%
XLB
Total weight of top 15 holdings out of 15
75.64%
Top 15 holdings
Data as of March 31, 2026
IYM
IE000S9YS762
20.29%
NEWMONT CORP
10.56%
FREEPORT-MCMORAN INC
7.60%
ECOLAB
6.10%
AIR PRODUCTS AND CHEMICALS
4.74%
FASTENAL
4.13%
GB00BRXH2664
3.80%
NUCOR
3.43%
STEEL DYNAMICS
2.74%
ROYAL GOLD
2.45%
ALBEMARLE
2.42%
LYONDELLBASELL INDUSTRIES
2.37%
CF INDUSTRIES HOLDINGS
2.31%
CARPENTER TECHNOLOGY
2.18%
INTERNATIONAL PAPER CO
2.15%
XLB
IE000S9YS762
14.42%
NEWMONT CORP
7.36%
FREEPORT-MCMORAN INC
5.26%
CORTEVA INC
4.75%
AIR PRODUCTS AND CHEMICALS
4.64%
SHERWIN WILLIAMS
4.60%
CRH PLC
4.51%
VULCAN MATERIALS
4.51%
MARTIN MARIETTA
4.40%
NUCOR
4.39%
ECOLAB
4.29%
DOW INC
3.75%
STEEL DYNAMICS
3.10%
PPG INDUSTRIES
3.01%
ALBEMARLE
2.65%
Frequently asked questions about IYM and XLB
How have the IYM and XLB ETFs performed in 2026?
As of April 24, 2026, IYM is up 20.24% year-to-date (YTD), while XLB has returned 15.09%. That puts IYM better performer ahead so far this year.
Which ETF is attracting more investor money: IYM or XLB?
Year-to-date, the IYM ETF saw +$817M in flows, compared to +$1.27B for XLB.
Which ETF is more volatile: IYM or XLB?
Over the past year, IYM had a volatility of 17.93%, while XLB experienced 16.37%.
Which ETF is bigger: IYM or XLB?
As of April 24, 2026, IYM holds $1.65 B in assets under management (AUM), while XLB manages $7.42 B.
What sectors do the IYM and XLB ETFs invest in?
IYM leans toward sectors like Materials and Industrials. Meanwhile, XLB focuses on Materials.
What are the top holdings of the IYM ETF and XLB ETF?
IYM top holdings include IE000S9YS762, NEWMONT CORP and FREEPORT-MCMORAN INC. XLB holds in its top three: IE000S9YS762, NEWMONT CORP and FREEPORT-MCMORAN INC.
Which ETF is more diversified: IYM or XLB?
IYM holds 39 securities with 77.27% of its assets in the top 15. XLB has 25 securities and a top 15 weight of 75.64%.
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