OIHvsIEZETF Comparison
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VanEck Oil Services ETF (OIH) and iShares U.S. Oil Equipment & Services ETF (IEZ) belong to the same industry segment: US Energy. OIH's top 1 sector exposures are Energy. In contrast, IEZ's top sector exposures are Energy, Non-Energy Materials and Non-Corporate. OIH is less expensive with a Total Expense Ratio (TER) of 0.35%, versus 0.37% for IEZ. OIH is up 50.65% year-to-date (YTD) with +$49M in YTD flows. IEZ performs worse with 47.48% YTD performance, and +$209M in YTD flows. Run a side-by-side ETF comparison of OIH and IEZ 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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OIH vs IEZ performance and flow charts
Performance
Cumulative Flows
Historic performance and flows
Data as of 09/08/2026
| 1M | 3M | YTD | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|---|---|
| Perf. | OIH IEZ | +4.17%+3.43% | -0.34%-0.33% | +50.65%+47.48% | +70.82%+64.02% | +27.73%+29.54% | +155.80%+158.78% |
| Flows | OIH IEZ | +$46M-$4M | -$328M-$244M | +$49M+$209M | +$376M+$217M | -$757M+$183M | -$1.85B+$252M |
Volatility and drawdown
| 3M | 1Y | 3Y | 5Y | ||
|---|---|---|---|---|---|
| Volatility | OIH IEZ | +29.75%+28.45% | +29.81%+28.85% | +31.49%+30.65% | +36.31%+35.58% |
| Max drawdown | OIH IEZ | -16.39%-15.79% | -20.77%-20.27% | -43.83%-40.22% | -43.83%-40.22% |
| Max drawdown duration | OIH IEZ | 85d85d | 113d113d | 864d861d | 864d861d |
Trading data
OIH | IEZ | |
Last sale 9/9/2026 at 2:24 PM | $434.61 | $30.87 |
| Previous close 09/08/2026 | $428.57 | $30.60 |
| Consolidated volume 09/08/2026 | ||
| Average volume 30 days | ||
| Average discount or premium 30 days | ||
| Average Bid/Ask spread 30 days |
Replication quality
Data as of August 31, 2026
1-year trailing difference
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OIH | IEZ | |
|---|---|---|
| Tracking error | ||
| Tracking difference | ||
| 1 year cumulative return difference | ||
| Best | ||
| Worst | ||
| Daily return difference | ||
| Average | ||
| Worst | ||
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Main metrics
Last update 9/9/2026 at 2:24 PM
Live
Closed
OIH | IEZ | |
|---|---|---|
| Last price | $434.61 | $30.87 |
| 1D performance | +1.41% | +0.87% |
| AuM | $2.08 B | $391.81 M |
| E/R | 0.35% | 0.37% |
Characteristics
OIH | IEZ | |
|---|---|---|
| Management strategy | Passive | Passive |
| Provider | VanEck | iShares |
| Benchmark | MVIS US Listed Oil Services 25 Index | Dow Jones U.S. Select Oil Equipment & Services Index |
| N° of holdings | 25 | 32 |
| Asset class | Equities | Equities |
| Trailing 12m distribution yield | Join | Join |
| Inception date | December 20, 2011 | May 1, 2006 |
| ESG | No | No |
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Exposure
Countries
OIH
USA
86.18%
Other
13.82%
IEZ
USA
92.21%
Other
7.79%
Sectors
OIH
Energy
100%
Other
-0%
IEZ
Energy
99.36%
Other
0.64%
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Diversification
OIH
Total weight of top 15 holdings out of 15
86.71%
IEZ
Total weight of top 15 holdings out of 15
86.05%
Top 15 holdings
Data as of July 31, 2026
OIH
SLB Ltd.
19.79%
Baker Hughes Co.
12.67%
TechnipFMC plc
7.16%
Halliburton Co.
5.95%
Tenaris SA
5.18%
Weatherford International plc
4.37%
Noble Corp. Plc
4.36%
Transocean Ltd.
4.27%
Oceaneering International, Inc.
3.78%
NOV, Inc.
3.71%
Cactus, Inc.
3.37%
Solaris Energy Infrastructure, Inc.
3.28%
Valaris Ltd.
3.19%
Patterson-UTI Energy, Inc.
3.07%
Helmerich & Payne, Inc.
2.56%
IEZ
Baker Hughes Co.
23.71%
SLB Ltd.
21.98%
TechnipFMC plc
4.92%
Halliburton Co.
3.97%
NOV, Inc.
3.89%
Archrock, Inc.
3.49%
Weatherford International plc
3.42%
Kodiak Gas Services, Inc.
3.21%
Noble Corp. Plc
2.94%
Transocean Ltd.
2.87%
Valaris Ltd.
2.74%
Oceaneering International, Inc.
2.67%
Cactus, Inc.
2.42%
Patterson-UTI Energy, Inc.
1.91%
Tidewater, Inc.
1.91%
Frequently asked questions about OIH and IEZ
How have the OIH and IEZ ETFs performed in 2026?
As of September 8, 2026, OIH is up 50.65% year-to-date (YTD), while IEZ has returned 47.48%. That puts OIH better performer ahead so far this year.
Which ETF is attracting more investor money: OIH or IEZ?
Year-to-date, the OIH ETF saw +$49M in flows, compared to +$209M for IEZ.
Which ETF is more volatile: OIH or IEZ?
Over the past year, OIH had a volatility of 29.81%, while IEZ experienced 28.85%.
Which ETF is bigger: OIH or IEZ?
As of September 8, 2026, OIH holds $2.08 B in assets under management (AUM), while IEZ manages $391.81 M.
What sectors do the OIH and IEZ ETFs invest in?
OIH leans toward sectors like Energy. Meanwhile, IEZ focuses on Energy.
What are the top holdings of the OIH ETF and IEZ ETF?
OIH top holdings include SLB Ltd., Baker Hughes Co. and TechnipFMC plc. IEZ holds in its top three: Baker Hughes Co., SLB Ltd. and TechnipFMC plc.
Which ETF is more diversified: OIH or IEZ?
OIH holds 25 securities with 86.71% of its assets in the top 15. IEZ has 32 securities and a top 15 weight of 86.05%.
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