IEZ vs. OIH

Last updated Jun 4, 2026

IEZ (iShares U.S. Oil Equipment & Services ETF) and OIH (VanEck Vectors Oil Services ETF) are both Energy Equities funds - IEZ tracks the Dow Jones U.S. Select Oil Equipment & Services Index while OIH tracks the MVIS US Listed Oil Services 25 Index. Both are passively managed. Over the past 10 years, IEZ returned -0.13%/yr vs -0.90%/yr for OIH. With a 0.99 correlation, they move nearly in lockstep. IEZ charges 0.42%/yr vs 0.35%/yr for OIH.

Performance

IEZ vs. OIH - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares U.S. Oil Equipment & Services ETF (IEZ) and VanEck Vectors Oil Services ETF (OIH). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, IEZ achieves a 47.84% return, which is significantly lower than OIH's 51.43% return. Over the past 10 years, IEZ has outperformed OIH with an annualized return of -0.13%, while OIH has yielded a comparatively lower -0.90% annualized return.

IEZ

• 1D: 0.03%
• 1M: -3.54%
• YTD: 47.84%
• 6M: 42.02%
• 1Y: 85.10%
• 3Y*: 19.17%
• 5Y*: 13.91%
• 10Y*: -0.13%

OIH

• 1D: 0.18%
• 1M: -2.77%
• YTD: 51.43%
• 6M: 43.87%
• 1Y: 92.96%
• 3Y*: 18.56%
• 5Y*: 13.62%
• 10Y*: -0.90%

*Multi-year figures are annualized to reflect compound growth (CAGR)

IEZ vs. OIH - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
IEZ iShares U.S. Oil Equipment & Services ETF	47.84%	7.51%	-8.15%	4.43%	65.73%	15.98%	-42.98%	1.82%	-42.47%	-18.18%
OIH VanEck Vectors Oil Services ETF	51.43%	6.81%	-10.53%	3.20%	66.17%	21.22%	-41.19%	-3.54%	-45.03%	-19.66%

Correlation

The correlation between IEZ and OIH is 0.99 - these two move nearly in lockstep. At this level, holding both provides almost no diversification benefit. If you already own one, adding the other does little to reduce portfolio risk.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.99
Correlation (3Y) Calculated over the trailing 3-year period	0.99
Correlation (5Y) Calculated over the trailing 5-year period	0.99
Correlation (10Y) Calculated over the trailing 10-year period	0.99
Correlation (All Time) Calculated using the full available price history since May 8, 2006	0.99

The correlation between IEZ and OIH has been stable across timeframes, ranging from 0.99 to 0.99 - a consistent structural relationship.

IEZ vs. OIH - Sectors Allocation Comparison

Sectors	IEZ	OIH
Energy	98.8%	98.0%
Utilities	1.0%	1.8%
Industrials	0.6%	-
Basic Materials	-	-
Communication Services	-	-
Consumer Cyclical	-	-
Consumer Defensive	-	-
Financial Services	-	-
Healthcare	-	-
Real Estate	-	-
Technology	-	-

Return for Risk

IEZ vs. OIH — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

IEZ

IEZ Risk / Return Rank: 87
IEZ Sharpe Ratio Rank: 88
IEZ Sortino Ratio Rank: 82
IEZ Omega Ratio Rank: 77
IEZ Calmar Ratio Rank: 95
IEZ Martin Ratio Rank: 92

OIH

OIH Risk / Return Rank: 89
OIH Sharpe Ratio Rank: 90
OIH Sortino Ratio Rank: 85
OIH Omega Ratio Rank: 79
OIH Calmar Ratio Rank: 96
OIH Martin Ratio Rank: 93

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

IEZ vs. OIH - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares U.S. Oil Equipment & Services ETF (IEZ) and VanEck Vectors Oil Services ETF (OIH). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.

	IEZ	OIH	Difference
Sharpe ratio: Return per unit of total volatility	3.00	3.19	-0.18
Sortino ratio: Return per unit of downside risk	3.71	3.87	-0.16
Omega ratio: Gain probability vs. loss probability	1.46	1.48	-0.02
Calmar ratio: Return relative to maximum drawdown	8.29	9.80	-1.51
Martin ratio: Return relative to average drawdown	22.60	24.42	-1.82
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

IEZ vs. OIH - Sharpe Ratio Comparison

The current IEZ Sharpe Ratio is 3.00, which is comparable to the OIH Sharpe Ratio of 3.19. The chart below compares the historical Sharpe Ratios of IEZ and OIH, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	IEZ	OIH	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	3.00	3.19	-0.18
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.38	0.37	+0.01
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	-0.00	-0.02	+0.02
Sharpe Ratio (All Time) Calculated using the full available price history	-0.04	0.01	-0.04

Drawdowns

IEZ vs. OIH - Drawdown Comparison

The maximum IEZ drawdown since its inception was -92.52%, roughly equal to the maximum OIH drawdown of -94.45%. Use the drawdown chart below to compare losses from any high point for IEZ and OIH.

Drawdown Indicators

	IEZ	OIH	Difference
Max Drawdown Largest peak-to-trough decline	-92.52%	-94.45%	+1.93%
Max Drawdown (1Y) Largest decline over 1 year	-10.32%	-9.54%	-0.78%
Max Drawdown (3Y) Largest decline over 3 years	-40.25%	-43.80%	+3.55%
Max Drawdown (5Y) Largest decline over 5 years	-40.25%	-43.80%	+3.55%
Max Drawdown (10Y) Largest decline over 10 years	-88.29%	-89.62%	+1.33%
Current Drawdown Current decline from peak	-51.21%	-61.60%	+10.39%
Average Drawdown Average peak-to-trough decline	-48.26%	-48.84%	+0.58%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.78%	3.82%	-0.04%

Volatility

IEZ vs. OIH - Volatility Comparison

iShares U.S. Oil Equipment & Services ETF (IEZ) and VanEck Vectors Oil Services ETF (OIH) have volatilities of 7.95% and 7.95%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	IEZ	OIH	Difference
Volatility (1M) Calculated over the trailing 1-month period	7.95%	7.95%	0.00%
Volatility (6M) Calculated over the trailing 6-month period	20.11%	20.36%	-0.25%
Volatility (1Y) Calculated over the trailing 1-year period	28.62%	29.49%	-0.87%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	36.35%	36.79%	-0.44%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	41.56%	42.41%	-0.85%

IEZ vs. OIH - Expense Ratio Comparison

IEZ has a 0.42% expense ratio, which is higher than OIH's 0.35% expense ratio.

Dividends

IEZ vs. OIH - Dividend Comparison

IEZ's dividend yield for the trailing twelve months is around 1.18%, more than OIH's 1.13% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
IEZ iShares U.S. Oil Equipment & Services ETF	1.18%	1.87%	1.76%	0.97%	0.65%	1.20%	2.07%	2.28%	1.81%	3.42%	0.91%	2.40%
OIH VanEck Vectors Oil Services ETF	1.13%	1.71%	2.01%	1.36%	0.95%	0.98%	1.23%	2.10%	2.13%	2.60%	1.40%	2.39%

Frequently Asked Questions

Can I hold both IEZ and OIH in my portfolio?

With a correlation of 0.99, IEZ and OIH move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.

Which is riskier, IEZ or OIH?

OIH has higher volatility (7.95%) compared to IEZ (7.95%). In terms of maximum drawdown, IEZ dropped -92.52% vs OIH's -94.45%.

Which ETF is better, IEZ or OIH?

On 10-year performance, IEZ leads with -0.13% vs -0.90% for OIH. On fees, OIH is cheaper at 0.35% per year. Their volatility is very similar. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, IEZ or OIH?

Over the 10-year period, IEZ has performed better with a -0.13% return vs -0.90%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, IEZ or OIH?

OIH is cheaper with a 0.35% expense ratio, compared with 0.42% for IEZ.

Which ETF pays a higher dividend yield, IEZ or OIH?

IEZ has the higher dividend yield at 1.18%, compared with 1.13% for OIH.

What is the main difference between IEZ and OIH?

IEZ tracks Dow Jones U.S. Select Oil Equipment & Services Index, while OIH tracks MVIS US Listed Oil Services 25 Index. They also come from different issuers: iShares and VanEck. Their fees differ too: 0.42% for IEZ and 0.35% for OIH.

Which has better risk-adjusted returns?

OIH currently has the higher Sharpe Ratio (3.19 vs 3.00), meaning it's delivered slightly more return per unit of risk over the trailing 12 months. However, this ranking shifts over time - use the Risk/Return Score above for a more comprehensive view that combines Sharpe, Sortino, and other measures used by quantitative funds.