EPIN vs. OILK

Last updated Jun 25, 2026

EPIN (Harbor International Equity ETF) and OILK (ProShares K-1 Free Crude Oil Strategy ETF) are both exchange-traded funds - EPIN is a Foreign Large Cap Equities fund actively managed by Harbor, while OILK is a Oil & Gas fund tracking the Bloomberg Commodity Balanced WTI Crude Oil Index. EPIN is actively managed, while OILK is passively managed. Over the past year, EPIN returned 37.79% vs 28.18% for OILK. At a correlation of -0.25, they often move in opposite directions. EPIN charges 0.80%/yr vs 0.68%/yr for OILK.

Performance

EPIN vs. OILK - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Harbor International Equity ETF (EPIN) and ProShares K-1 Free Crude Oil Strategy ETF (OILK). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, EPIN achieves a 21.76% return, which is significantly lower than OILK's 35.89% return.

EPIN

• 1D: -0.21%
• 1M: 3.18%
• YTD: 21.76%
• 6M: 21.92%
• 1Y: 37.79%
• 3Y*: —
• 5Y*: —
• 10Y*: —

OILK

• 1D: -3.47%
• 1M: -16.39%
• YTD: 35.89%
• 6M: 33.85%
• 1Y: 28.18%
• 3Y*: 12.58%
• 5Y*: 12.04%
• 10Y*: —

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

EPIN vs. OILK - Yearly Performance Comparison

	2026 (YTD)	2025
EPIN Harbor International Equity ETF	21.76%	14.36%
OILK ProShares K-1 Free Crude Oil Strategy ETF	35.89%	-2.56%

Correlation

The correlation between EPIN and OILK is -0.23, meaning they tend to move in opposite directions. This is especially valuable for risk management - when one declines, the other has historically tended to hold steady or rise.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	-0.23
Correlation (All Time) Calculated using the full available price history since Jun 5, 2025	-0.25

Return for Risk

EPIN vs. OILK — Risk / Return Rank

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

EPIN

EPIN Risk / Return Rank: 73
EPIN Sharpe Ratio Rank: 73
EPIN Sortino Ratio Rank: 71
EPIN Omega Ratio Rank: 73
EPIN Calmar Ratio Rank: 74
EPIN Martin Ratio Rank: 75

OILK

OILK Risk / Return Rank: 29
OILK Sharpe Ratio Rank: 30
OILK Sortino Ratio Rank: 29
OILK Omega Ratio Rank: 28
OILK Calmar Ratio Rank: 30
OILK Martin Ratio Rank: 28

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.

EPIN vs. OILK - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Harbor International Equity ETF (EPIN) and ProShares K-1 Free Crude Oil Strategy ETF (OILK). 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.

Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.

	EPIN	OILK	Difference
Sharpe ratio: Return per unit of total volatility	2.04	1.00	+1.04
Sortino ratio: Return per unit of downside risk	2.78	1.47	+1.31
Omega ratio: Gain probability vs. loss probability	1.37	1.18	+0.19
Calmar ratio: Return relative to maximum drawdown	3.26	1.40	+1.87
Martin ratio: Return relative to average drawdown	12.22	3.56	+8.66

EPIN vs. OILK - Sharpe Ratio Comparison

The current EPIN Sharpe Ratio is 2.04, which is higher than the OILK Sharpe Ratio of 1.00. The chart below compares the historical Sharpe Ratios of EPIN and OILK, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

EPIN vs. OILK - Drawdown Comparison

The maximum EPIN drawdown since its inception was -11.64%, smaller than the maximum OILK drawdown of -83.76%. Use the drawdown chart below to compare losses from any high point for EPIN and OILK.

Drawdown Indicators

	EPIN	OILK	Difference
Max Drawdown Largest peak-to-trough decline	-11.64%	-83.76%	+72.12%
Max Drawdown (1Y) Largest decline over 1 year	-11.64%	-20.28%	+8.64%
Max Drawdown (3Y) Largest decline over 3 years	—	-23.42%	—
Max Drawdown (5Y) Largest decline over 5 years	—	-34.69%	—
Current Drawdown Current decline from peak	-3.18%	-20.28%	+17.10%
Average Drawdown Average peak-to-trough decline	-1.81%	-32.47%	+30.66%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.10%	7.93%	-4.83%

Volatility

EPIN vs. OILK - Volatility Comparison

Harbor International Equity ETF (EPIN) and ProShares K-1 Free Crude Oil Strategy ETF (OILK) have volatilities of 8.48% and 8.49%, 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

	EPIN	OILK	Difference
Volatility (1M) Calculated over the trailing 1-month period	8.48%	8.49%	-0.01%
Volatility (6M) Calculated over the trailing 6-month period	16.57%	24.37%	-7.80%
Volatility (1Y) Calculated over the trailing 1-year period	18.66%	28.64%	-9.98%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	18.42%	30.31%	-11.89%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.42%	35.97%	-17.55%

EPIN vs. OILK - Expense Ratio Comparison

EPIN has a 0.80% expense ratio, which is higher than OILK's 0.68% expense ratio.

Dividends

EPIN vs. OILK - Dividend Comparison

EPIN's dividend yield for the trailing twelve months is around 0.65%, less than OILK's 9.88% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017
EPIN Harbor International Equity ETF	0.65%	0.79%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
OILK ProShares K-1 Free Crude Oil Strategy ETF	9.88%	4.79%	3.11%	5.80%	17.32%	68.82%	0.13%	0.94%	0.58%	6.17%

Frequently Asked Questions

Can I hold both EPIN and OILK in my portfolio?

EPIN and OILK have a correlation of -0.23, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, EPIN or OILK?

OILK has higher volatility (8.49%) compared to EPIN (8.48%). In terms of maximum drawdown, EPIN dropped -11.64% vs OILK's -83.76%.

Which ETF is better, EPIN or OILK?

On 1-year performance, EPIN leads with 37.79% vs 28.18% for OILK. On fees, OILK is cheaper at 0.68% 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, EPIN or OILK?

Over the 1-year period, EPIN has performed better with a 37.79% return vs 28.18%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, EPIN or OILK?

OILK is cheaper with a 0.68% expense ratio, compared with 0.80% for EPIN.

Which ETF pays a higher dividend yield, EPIN or OILK?

OILK has the higher dividend yield at 9.88%, compared with 0.65% for EPIN.

What is the main difference between EPIN and OILK?

EPIN is categorized as Foreign Large Cap Equities, while OILK is Oil & Gas. They also come from different issuers: Harbor and ProShares. Their fees differ too: 0.80% for EPIN and 0.68% for OILK.

Which has better risk-adjusted returns?

EPIN currently has the higher Sharpe Ratio (2.04 vs 1.00), 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.