FFOX vs. OILK

Last updated Jun 4, 2026

FFOX (FundX Future Fund Opportunities ETF) and OILK (ProShares K-1 Free Crude Oil Strategy ETF) are both exchange-traded funds - FFOX is a Mid Cap Growth Equities fund actively managed by FundX, while OILK is a Oil & Gas fund tracking the Bloomberg Commodity Balanced WTI Crude Oil Index. FFOX is actively managed, while OILK is passively managed. At a correlation of -0.30, they often move in opposite directions. FFOX charges 1.02%/yr vs 0.68%/yr for OILK.

Performance

FFOX vs. OILK - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in FundX Future Fund Opportunities ETF (FFOX) 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, FFOX achieves a 3.19% return, which is significantly lower than OILK's 61.09% return.

FFOX

• 1D: -0.71%
• 1M: -1.26%
• YTD: 3.19%
• 6M: 1.62%
• 1Y: —
• 3Y*: —
• 5Y*: —
• 10Y*: —

OILK

• 1D: -1.91%
• 1M: -2.15%
• YTD: 61.09%
• 6M: 56.40%
• 1Y: 56.95%
• 3Y*: 18.39%
• 5Y*: 17.28%
• 10Y*: —

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

FFOX vs. OILK - Yearly Performance Comparison

	2026 (YTD)	2025
FFOX FundX Future Fund Opportunities ETF	3.19%	9.95%
OILK ProShares K-1 Free Crude Oil Strategy ETF	61.09%	-4.69%

Correlation

The correlation between FFOX and OILK is -0.30, 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 (All Time) Calculated using the full available price history since Jun 11, 2025	-0.30

Return for Risk

FFOX vs. OILK — Risk / Return Rank

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

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.

FFOX vs. OILK - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for FundX Future Fund Opportunities ETF (FFOX) 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.

Risk / return metrics aren't available yet — we need at least 12 months of trading data to calculate them.

Sharpe Ratios by Period

	FFOX	OILK	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	—	1.99	—
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	0.58	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.80	0.11	+0.69

Drawdowns

FFOX vs. OILK - Drawdown Comparison

The maximum FFOX drawdown since its inception was -12.41%, smaller than the maximum OILK drawdown of -83.76%. Use the drawdown chart below to compare losses from any high point for FFOX and OILK.

Drawdown Indicators

	FFOX	OILK	Difference
Max Drawdown Largest peak-to-trough decline	-12.41%	-83.76%	+71.35%
Max Drawdown (1Y) Largest decline over 1 year	—	-17.35%	—
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	-4.06%	-5.49%	+1.43%
Average Drawdown Average peak-to-trough decline	-2.23%	-32.60%	+30.37%
Ulcer Index Depth and duration of drawdowns from previous peaks	—	8.57%	—

Volatility

Volatility by Period

	FFOX	OILK	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	10.52%	—
Volatility (6M) Calculated over the trailing 6-month period	—	23.32%	—
Volatility (1Y) Calculated over the trailing 1-year period	17.30%	28.82%	-11.52%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.30%	30.13%	-12.83%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	17.30%	35.97%	-18.67%

FFOX vs. OILK - Expense Ratio Comparison

FFOX has a 1.02% expense ratio, which is higher than OILK's 0.68% expense ratio.

Dividends

FFOX vs. OILK - Dividend Comparison

FFOX's dividend yield for the trailing twelve months is around 1.76%, less than OILK's 8.34% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017
FFOX FundX Future Fund Opportunities ETF	1.76%	1.81%	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	8.34%	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 FFOX and OILK in my portfolio?

FFOX and OILK have a correlation of -0.30, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, FFOX or OILK?

On fees, OILK is cheaper at 0.68% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, FFOX or OILK?

OILK is cheaper with a 0.68% expense ratio, compared with 1.02% for FFOX.

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

OILK has the higher dividend yield at 8.34%, compared with 1.76% for FFOX.

What is the main difference between FFOX and OILK?

FFOX is categorized as Mid Cap Growth Equities, while OILK is Oil & Gas. They also come from different issuers: FundX and ProShares. Their fees differ too: 1.02% for FFOX and 0.68% for OILK.