IEZvsOIHETF Comparison
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iShares U.S. Oil Equipment & Services ETF (IEZ) and VanEck Oil Services ETF (OIH) belong to the same industry segment: US Energy. IEZ's top 3 sector exposures are Energy, Non-Energy Materials and Non-Corporate. In contrast, OIH's top sector exposures are Energy. IEZ is more expensive with a Total Expense Ratio (TER) of 0.37%, versus 0.35% for OIH. IEZ is up 33.3% year-to-date (YTD) with +$193M in YTD flows. OIH performs better with 39.75% YTD performance, and -$64M in YTD flows. Run a side-by-side ETF comparison of IEZ and OIH 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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IEZ vs OIH performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 10/23/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | IEZ OIH | -1.19%+0.45% | +1.00%+3.89% | +33.30%+39.75% | +37.06%+44.78% | +23.21%+23.54% | +93.02%+90.08% |
| Flows | IEZ OIH | -$22M-$175M | -$22M-$297M | +$193M-$64M | +$202M+$186M | +$20M-$925M | +$237M-$2.23B |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | IEZ OIH | +30.27%+31.27% | +29.14%+29.91% | +30.76%+31.59% | +35.46%+36.12% |
| Max drawdown | IEZ OIH | -15.62%-13.74% | -20.27%-20.77% | -38.93%-42.54% | -40.22%-43.83% |
| Max drawdown duration | IEZ OIH | 51d51d | 158d158d | 647d653d | 861d864d |
Trading data
IEZ | OIH | |
Last sale 10/26/2026 at 1:52 PM | $27.64 | $399.66 |
| Previous close 10/23/2026 | $27.58 | $397.36 |
| Consolidated volume 10/23/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of September 30, 2026
1-year trailing difference
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IEZ | OIH | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 10/26/2026 at 1:52 PM
Live
Closed
IEZ | OIH | |
|---|---|---|
| Last price | $27.64 | $399.66 |
| 1D performance | +0.22% | +0.58% |
| AuM | $336.42 M | $1.81 B |
| E/R | 0.37% | 0.35% |
Characteristics
IEZ | OIH | |
|---|---|---|
| Management strategy | Passive | Passive |
| Provider | iShares | VanEck |
| Benchmark | Dow Jones U.S. Select Oil Equipment & Services Index | MVIS US Listed Oil Services 25 Index |
| N° of holdings | 32 | 25 |
| Asset class | Equities | Equities |
| Trailing 12m distribution yield | Join | Join |
| Inception date | May 1, 2006 | December 20, 2011 |
| ESG | No | No |
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Exposure
Countries
IEZ
USA
92.12%
Other
7.88%
OIH
USA
86.73%
Other
13.27%
Sectors
IEZ
Energy
99.36%
Other
0.64%
OIH
Energy
100%
Other
-0%
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Diversification
IEZ
Total weight of top 15 holdings out of 15
86.07%
OIH
Total weight of top 15 holdings out of 15
86.59%
Top 15 holdings
Data as of August 31, 2026
IEZ
SLB Ltd.
23.92%
Baker Hughes Co.
22.28%
TechnipFMC plc
4.94%
Halliburton Co.
4.10%
NOV, Inc.
3.80%
Weatherford International plc
3.53%
Transocean Ltd.
2.91%
Noble Corp. Plc
2.88%
Kodiak Gas Services, Inc.
2.86%
Valaris Ltd.
2.77%
Archrock, Inc.
2.75%
Oceaneering International, Inc.
2.57%
Cactus, Inc.
2.43%
Patterson-UTI Energy, Inc.
2.17%
Helmerich & Payne, Inc.
2.17%
OIH
SLB Ltd.
20.85%
Baker Hughes Co.
11.87%
TechnipFMC plc
7.09%
Halliburton Co.
6.12%
Tenaris SA
4.43%
Transocean Ltd.
4.38%
Weatherford International plc
4.35%
Noble Corp. Plc
4.33%
NOV, Inc.
3.62%
Oceaneering International, Inc.
3.61%
Patterson-UTI Energy, Inc.
3.48%
Cactus, Inc.
3.41%
Valaris Ltd.
3.28%
Helmerich & Payne, Inc.
2.90%
Solaris Energy Infrastructure, Inc.
2.87%
Frequently asked questions about IEZ and OIH
How have the IEZ and OIH ETFs performed in 2026?
As of October 23, 2026, IEZ is up 33.3% year-to-date (YTD), while OIH has returned 39.75%. That puts OIH better performer ahead so far this year.
Which ETF is attracting more investor money: IEZ or OIH?
Year-to-date, the IEZ ETF saw +$193M in flows, compared to -$64M for OIH.
Which ETF is more volatile: IEZ or OIH?
Over the past year, IEZ had a volatility of 29.14%, while OIH experienced 29.91%.
Which ETF is bigger: IEZ or OIH?
As of October 23, 2026, IEZ holds $336.42 M in assets under management (AUM), while OIH manages $1.81 B.
What sectors do the IEZ and OIH ETFs invest in?
IEZ leans toward sectors like Energy. Meanwhile, OIH focuses on Energy.
What are the top holdings of the IEZ ETF and OIH ETF?
IEZ top holdings include SLB Ltd., Baker Hughes Co. and TechnipFMC plc. OIH holds in its top three: SLB Ltd., Baker Hughes Co. and TechnipFMC plc.
Which ETF is more diversified: IEZ or OIH?
IEZ holds 32 securities with 86.07% of its assets in the top 15. OIH has 25 securities and a top 15 weight of 86.59%.
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