DFAS vs. OILK

Last updated Jun 4, 2026

DFAS (Dimensional U.S. Small Cap ETF) and OILK (ProShares K-1 Free Crude Oil Strategy ETF) are both exchange-traded funds - DFAS is a Small Cap Blend Equities fund actively managed by Dimensional, while OILK is a Oil & Gas fund tracking the Bloomberg Commodity Balanced WTI Crude Oil Index. DFAS is actively managed, while OILK is passively managed. Over the past 3 years, DFAS returned 15.22%/yr vs 19.03%/yr for OILK. At a 0.15 correlation, their price movements are largely independent. DFAS charges 0.34%/yr vs 0.68%/yr for OILK.

Performance

DFAS vs. OILK - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Dimensional U.S. Small Cap ETF (DFAS) 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, DFAS achieves a 12.81% return, which is significantly lower than OILK's 64.22% return.

DFAS

• 1D: -0.81%
• 1M: 2.19%
• YTD: 12.81%
• 6M: 12.10%
• 1Y: 27.65%
• 3Y*: 15.22%
• 5Y*: —
• 10Y*: —

OILK

• 1D: 1.40%
• 1M: -1.65%
• YTD: 64.22%
• 6M: 60.70%
• 1Y: 58.99%
• 3Y*: 19.03%
• 5Y*: 17.73%
• 10Y*: —

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

DFAS vs. OILK - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
DFAS Dimensional U.S. Small Cap ETF	12.81%	8.17%	10.21%	17.83%	-13.84%	4.94%
OILK ProShares K-1 Free Crude Oil Strategy ETF	64.22%	-11.86%	8.18%	-0.97%	27.57%	12.00%

Correlation

The correlation between DFAS and OILK is -0.24, 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	-0.24
Correlation (3Y) Calculated over the trailing 3-year period	0.02
Correlation (All Time) Calculated using the full available price history since Jun 15, 2021	0.15

The correlation between DFAS and OILK shifts across timeframes, from -0.24 (1 year) to 0.15 (all time), reflecting how their relationship changes across market environments.

DFAS vs. OILK - Sectors Allocation Comparison

Sectors	DFAS	OILK
Financial Services	19.5%	-
Industrials	18.6%	-
Technology	15.0%	-
Consumer Cyclical	11.9%	100.0%
Healthcare	11.0%	-
Energy	6.7%	-
Basic Materials	5.6%	-
Consumer Defensive	4.3%	-
Utilities	3.8%	-
Communication Services	2.8%	-
Real Estate	0.2%	-

Return for Risk

DFAS vs. OILK — Risk / Return Rank

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

DFAS

DFAS Risk / Return Rank: 51
DFAS Sharpe Ratio Rank: 47
DFAS Sortino Ratio Rank: 49
DFAS Omega Ratio Rank: 45
DFAS Calmar Ratio Rank: 59
DFAS Martin Ratio Rank: 57

OILK

OILK Risk / Return Rank: 55
OILK Sharpe Ratio Rank: 60
OILK Sortino Ratio Rank: 53
OILK Omega Ratio Rank: 54
OILK Calmar Ratio Rank: 68
OILK Martin Ratio Rank: 42

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.

DFAS vs. OILK - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Dimensional U.S. Small Cap ETF (DFAS) 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.

	DFAS	OILK	Difference
Sharpe ratio: Return per unit of total volatility	1.66	2.06	-0.40
Sortino ratio: Return per unit of downside risk	2.46	2.59	-0.13
Omega ratio: Gain probability vs. loss probability	1.29	1.34	-0.05
Calmar ratio: Return relative to maximum drawdown	2.97	3.42	-0.45
Martin ratio: Return relative to average drawdown	10.17	6.91	+3.26
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

DFAS vs. OILK - Sharpe Ratio Comparison

The current DFAS Sharpe Ratio is 1.66, which is comparable to the OILK Sharpe Ratio of 2.06. The chart below compares the historical Sharpe Ratios of DFAS 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.

Sharpe Ratios by Period

	DFAS	OILK	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.66	2.06	-0.40
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	0.59	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.36	0.12	+0.25

Drawdowns

DFAS vs. OILK - Drawdown Comparison

The maximum DFAS drawdown since its inception was -26.13%, smaller than the maximum OILK drawdown of -83.76%. Use the drawdown chart below to compare losses from any high point for DFAS and OILK.

Drawdown Indicators

	DFAS	OILK	Difference
Max Drawdown Largest peak-to-trough decline	-26.13%	-83.76%	+57.63%
Max Drawdown (1Y) Largest decline over 1 year	-9.36%	-17.35%	+7.99%
Max Drawdown (3Y) Largest decline over 3 years	-26.13%	-23.42%	-2.71%
Max Drawdown (5Y) Largest decline over 5 years	—	-34.69%	—
Current Drawdown Current decline from peak	-0.81%	-3.66%	+2.85%
Average Drawdown Average peak-to-trough decline	-8.31%	-32.61%	+24.30%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.73%	8.56%	-5.83%

Volatility

DFAS vs. OILK - Volatility Comparison

The current volatility for Dimensional U.S. Small Cap ETF (DFAS) is 4.31%, while ProShares K-1 Free Crude Oil Strategy ETF (OILK) has a volatility of 10.44%. This indicates that DFAS experiences smaller price fluctuations and is considered to be less risky than OILK based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	DFAS	OILK	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.31%	10.44%	-6.13%
Volatility (6M) Calculated over the trailing 6-month period	11.58%	23.26%	-11.68%
Volatility (1Y) Calculated over the trailing 1-year period	16.77%	28.75%	-11.98%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	20.84%	30.12%	-9.28%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	20.84%	35.97%	-15.13%

DFAS vs. OILK - Expense Ratio Comparison

DFAS has a 0.34% expense ratio, which is lower than OILK's 0.68% expense ratio.

Dividends

DFAS vs. OILK - Dividend Comparison

DFAS's dividend yield for the trailing twelve months is around 0.92%, less than OILK's 8.18% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017
DFAS Dimensional U.S. Small Cap ETF	0.92%	0.99%	0.93%	1.00%	1.03%	2.87%	0.00%	0.00%	0.00%	0.00%
OILK ProShares K-1 Free Crude Oil Strategy ETF	8.18%	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 DFAS and OILK in my portfolio?

DFAS and OILK have a correlation of -0.24, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, DFAS or OILK?

OILK has higher volatility (10.44%) compared to DFAS (4.31%). In terms of maximum drawdown, DFAS dropped -26.13% vs OILK's -83.76%.

Which ETF is better, DFAS or OILK?

On 3-year performance, OILK leads with 19.03% vs 15.22% for DFAS. On fees, DFAS is cheaper at 0.34% per year. On volatility, DFAS has been the lower-risk option at 4.31%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, DFAS or OILK?

Over the 3-year period, OILK has performed better with a 19.03% return vs 15.22%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, DFAS or OILK?

DFAS is cheaper with a 0.34% expense ratio, compared with 0.68% for OILK.

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

OILK has the higher dividend yield at 8.18%, compared with 0.92% for DFAS.

What is the main difference between DFAS and OILK?

DFAS is categorized as Small Cap Blend Equities, while OILK is Oil & Gas. They also come from different issuers: Dimensional and ProShares. Their fees differ too: 0.34% for DFAS and 0.68% for OILK.

Which has better risk-adjusted returns?

OILK currently has the higher Sharpe Ratio (2.06 vs 1.66), 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.