OILK vs. UNG
Compare and contrast key facts about ProShares K-1 Free Crude Oil Strategy ETF (OILK) and United States Natural Gas Fund LP (UNG).
OILK and UNG are both exchange-traded funds (ETFs), meaning they are traded on stock exchanges and can be bought and sold throughout the day. OILK is a passively managed fund by ProShares that tracks the performance of the Bloomberg Commodity Balanced WTI Crude Oil Index. It was launched on Sep 26, 2016. UNG is a passively managed fund by Concierge Technologies that tracks the performance of the Front Month Natural Gas. It was launched on Apr 18, 2007. Both OILK and UNG are passive ETFs, meaning that they are not actively managed but aim to replicate the performance of the underlying index as closely as possible.
Performance
OILK vs. UNG - Performance Comparison
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OILK vs. UNG - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
OILK ProShares K-1 Free Crude Oil Strategy ETF | 46.13% | -11.86% | 8.18% | -0.97% | 27.57% | 63.71% | -61.09% | 30.48% | -20.40% | 2.82% |
UNG United States Natural Gas Fund LP | -4.32% | -27.07% | -17.11% | -64.04% | 12.89% | 35.76% | -45.43% | -31.77% | 5.96% | -37.58% |
Returns By Period
In the year-to-date period, OILK achieves a 46.13% return, which is significantly higher than UNG's -4.32% return.
OILK
- 1D
- -4.10%
- 1M
- 25.62%
- YTD
- 46.13%
- 6M
- 36.81%
- 1Y
- 28.65%
- 3Y*
- 13.30%
- 5Y*
- 17.74%
- 10Y*
- —
UNG
- 1D
- 0.43%
- 1M
- 1.82%
- YTD
- -4.32%
- 6M
- -10.25%
- 1Y
- -45.72%
- 3Y*
- -24.96%
- 5Y*
- -21.28%
- 10Y*
- -19.74%
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OILK vs. UNG - Expense Ratio Comparison
OILK has a 0.68% expense ratio, which is lower than UNG's 1.28% expense ratio.
Return for Risk
OILK vs. UNG — Risk / Return Rank
OILK
UNG
OILK vs. UNG - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for ProShares K-1 Free Crude Oil Strategy ETF (OILK) and United States Natural Gas Fund LP (UNG). 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.
| OILK | UNG | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 1.00 | -0.72 | +1.71 |
Sortino ratioReturn per unit of downside risk | 1.45 | -0.86 | +2.32 |
Omega ratioGain probability vs. loss probability | 1.19 | 0.89 | +0.29 |
Calmar ratioReturn relative to maximum drawdown | 1.86 | -0.86 | +2.71 |
Martin ratioReturn relative to average drawdown | 3.27 | -1.25 | +4.51 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
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Sharpe Ratios by Period
| OILK | UNG | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 1.00 | -0.72 | +1.71 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.60 | -0.33 | +0.93 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | — | -0.36 | — |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.08 | -0.57 | +0.66 |
Correlation
The correlation between OILK and UNG is 0.13, which is considered to be low. This implies their price changes are not closely related. A low correlation is generally favorable for portfolio diversification, as it helps to reduce overall risk by spreading it across multiple assets with different performance patterns.
Dividends
OILK vs. UNG - Dividend Comparison
OILK's dividend yield for the trailing twelve months is around 2.67%, while UNG has not paid dividends to shareholders.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
OILK ProShares K-1 Free Crude Oil Strategy ETF | 2.67% | 4.79% | 3.11% | 5.80% | 17.32% | 68.82% | 0.13% | 0.94% | 0.58% | 6.17% |
UNG United States Natural Gas Fund LP | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
Drawdowns
OILK vs. UNG - Drawdown Comparison
The maximum OILK drawdown since its inception was -83.76%, smaller than the maximum UNG drawdown of -99.87%. Use the drawdown chart below to compare losses from any high point for OILK and UNG.
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Drawdown Indicators
| OILK | UNG | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -83.76% | -99.87% | +16.11% |
Max Drawdown (1Y)Largest decline over 1 year | -17.35% | -52.53% | +35.18% |
Max Drawdown (5Y)Largest decline over 5 years | -34.69% | -92.42% | +57.73% |
Max Drawdown (10Y)Largest decline over 10 years | — | -93.49% | — |
Current DrawdownCurrent decline from peak | -12.04% | -99.86% | +87.82% |
Average DrawdownAverage peak-to-trough decline | -33.09% | -89.87% | +56.78% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 9.86% | 36.10% | -26.24% |
Volatility
OILK vs. UNG - Volatility Comparison
The current volatility for ProShares K-1 Free Crude Oil Strategy ETF (OILK) is 12.23%, while United States Natural Gas Fund LP (UNG) has a volatility of 14.68%. This indicates that OILK experiences smaller price fluctuations and is considered to be less risky than UNG based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| OILK | UNG | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 12.23% | 14.68% | -2.45% |
Volatility (6M)Calculated over the trailing 6-month period | 20.23% | 54.10% | -33.87% |
Volatility (1Y)Calculated over the trailing 1-year period | 29.05% | 63.87% | -34.82% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 29.85% | 63.90% | -34.05% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 35.99% | 54.87% | -18.88% |