FSST vs. OILK

Last updated Jun 4, 2026

FSST (Fidelity Sustainability U.S. Equity ETF) and OILK (ProShares K-1 Free Crude Oil Strategy ETF) are both exchange-traded funds - FSST is a Sustainable fund tracking the Russell 3000, while OILK is a Oil & Gas fund tracking the Bloomberg Commodity Balanced WTI Crude Oil Index. Both are passively managed. At a 0.13 correlation, their price movements are largely independent. FSST charges 0.59%/yr vs 0.68%/yr for OILK.

Performance

FSST vs. OILK - Performance Comparison

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

Returns By Period

FSST

• 1D: —
• 1M: —
• YTD: —
• 6M: —
• 1Y: —
• 3Y*: —
• 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)

FSST vs. OILK - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
FSST Fidelity Sustainability U.S. Equity ETF	0.00%	15.40%	21.40%	25.49%	-18.30%	12.81%
OILK ProShares K-1 Free Crude Oil Strategy ETF	64.22%	-11.86%	8.18%	-0.97%	27.57%	12.65%

Correlation

The correlation between FSST and OILK is -0.16, 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	-0.16
Correlation (3Y) Calculated over the trailing 3-year period	0.01
Correlation (All Time) Calculated using the full available price history since Jun 18, 2021	0.13

The correlation between FSST and OILK shifts across timeframes, from -0.16 (1 year) to 0.13 (all time), reflecting how their relationship changes across market environments.

FSST vs. OILK - Sectors Allocation Comparison

Sectors	FSST	OILK
Technology	29.6%	-
Industrials	13.0%	-
Financial Services	12.1%	-
Communication Services	11.7%	-
Consumer Cyclical	11.5%	100.0%
Healthcare	10.2%	-
Consumer Defensive	4.6%	-
Basic Materials	3.4%	-
Energy	1.9%	-
Real Estate	1.3%	-
Utilities	0.9%	-

Return for Risk

FSST 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.

FSST vs. OILK - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity Sustainability U.S. Equity ETF (FSST) 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

	FSST	OILK	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	—	2.06	—
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	0.59	—
Sharpe Ratio (All Time) Calculated using the full available price history	—	0.12	—

Drawdowns

Drawdown Indicators

	FSST	OILK	Difference
Max Drawdown Largest peak-to-trough decline	—	-83.76%	—
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	—	-3.66%	—
Average Drawdown Average peak-to-trough decline	—	-32.61%	—
Ulcer Index Depth and duration of drawdowns from previous peaks	—	8.56%	—

Volatility

Volatility by Period

	FSST	OILK	Difference
Volatility (1M) Calculated over the trailing 1-month period	—	10.44%	—
Volatility (6M) Calculated over the trailing 6-month period	—	23.26%	—
Volatility (1Y) Calculated over the trailing 1-year period	—	28.75%	—
Volatility (5Y) Calculated over the trailing 5-year period, annualized	—	30.12%	—
Volatility (10Y) Calculated over the trailing 10-year period, annualized	—	35.97%	—

FSST vs. OILK - Expense Ratio Comparison

FSST has a 0.59% expense ratio, which is lower than OILK's 0.68% expense ratio.

Dividends

FSST vs. OILK - Dividend Comparison

FSST's dividend yield for the trailing twelve months is around 0.14%, less than OILK's 8.18% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017
FSST Fidelity Sustainability U.S. Equity ETF	0.14%	0.19%	2.01%	0.68%	1.00%	0.34%	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 FSST and OILK in my portfolio?

FSST and OILK have a correlation of -0.16, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, FSST or OILK?

On fees, FSST is cheaper at 0.59% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, FSST or OILK?

FSST is cheaper with a 0.59% expense ratio, compared with 0.68% for OILK.

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

OILK has the higher dividend yield at 8.18%, compared with 0.14% for FSST.

What is the main difference between FSST and OILK?

FSST is categorized as Sustainable, while OILK is Oil & Gas. FSST tracks Russell 3000, while OILK tracks Bloomberg Commodity Balanced WTI Crude Oil Index. They also come from different issuers: Fidelity and ProShares. Their fees differ too: 0.59% for FSST and 0.68% for OILK.