SSO vs. BOIL

Last updated Apr 2, 2026

Compare and contrast key facts about ProShares Ultra S&P500 (SSO) and ProShares Ultra Bloomberg Natural Gas (BOIL).

SSO and BOIL are both exchange-traded funds (ETFs), meaning they are traded on stock exchanges and can be bought and sold throughout the day. SSO is a passively managed fund by ProShares that tracks the performance of the S&P 500. It was launched on Jun 19, 2006. BOIL is a passively managed fund by ProShares that tracks the performance of the Dow Jones-UBS Natural Gas Subindex (200%). It was launched on Oct 4, 2011. Both SSO and BOIL 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

SSO vs. BOIL - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in ProShares Ultra S&P500 (SSO) and ProShares Ultra Bloomberg Natural Gas (BOIL). The values are adjusted to include any dividend payments, if applicable.

SSO vs. BOIL - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
SSO ProShares Ultra S&P500	-8.90%	26.19%	43.48%	46.65%	-38.98%	60.57%	21.54%	63.45%	-14.60%	44.35%
BOIL ProShares Ultra Bloomberg Natural Gas	-33.36%	-58.98%	-60.75%	-92.00%	-31.85%	23.84%	-74.74%	-67.70%	-20.55%	-65.72%

Returns By Period

In the year-to-date period, SSO achieves a -8.90% return, which is significantly higher than BOIL's -33.36% return. Over the past 10 years, SSO has outperformed BOIL with an annualized return of 21.24%, while BOIL has yielded a comparatively lower -55.80% annualized return.

SSO

• 1D: 1.48%
• 1M: -9.07%
• YTD: -8.90%
• 6M: -6.36%
• 1Y: 27.41%
• 3Y*: 28.90%
• 5Y*: 15.68%
• 10Y*: 21.24%

BOIL

• 1D: -5.33%
• 1M: -14.17%
• YTD: -33.36%
• 6M: -52.97%
• 1Y: -80.61%
• 3Y*: -65.17%
• 5Y*: -62.88%
• 10Y*: -55.80%

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

SSO vs. BOIL - Expense Ratio Comparison

SSO has a 0.87% expense ratio, which is lower than BOIL's 1.31% expense ratio.

BOIL

ProShares Ultra Bloomberg Natural Gas

SSO

ProShares Ultra S&P500

Return for Risk

SSO vs. BOIL — Risk / Return Rank

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

SSO

SSO Risk / Return Rank: 45
SSO Sharpe Ratio Rank: 38
SSO Sortino Ratio Rank: 44
SSO Omega Ratio Rank: 48
SSO Calmar Ratio Rank: 45
SSO Martin Ratio Rank: 51

BOIL

BOIL Risk / Return Rank: 2
BOIL Sharpe Ratio Rank: 2
BOIL Sortino Ratio Rank: 2
BOIL Omega Ratio Rank: 2
BOIL Calmar Ratio Rank: 0
BOIL Martin Ratio Rank: 2

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.

SSO vs. BOIL - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for ProShares Ultra S&P500 (SSO) and ProShares Ultra Bloomberg Natural Gas (BOIL). 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.

	SSO	BOIL	Difference
Sharpe ratio Return per unit of total volatility	0.76	-0.67	+1.43
Sortino ratio Return per unit of downside risk	1.27	-0.97	+2.23
Omega ratio Gain probability vs. loss probability	1.19	0.88	+0.31
Calmar ratio Return relative to maximum drawdown	1.22	-1.00	+2.22
Martin ratio Return relative to average drawdown	5.19	-1.35	+6.54
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

SSO vs. BOIL - Sharpe Ratio Comparison

The current SSO Sharpe Ratio is 0.76, which is higher than the BOIL Sharpe Ratio of -0.67. The chart below compares the historical Sharpe Ratios of SSO and BOIL, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	SSO	BOIL	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.76	-0.67	+1.43
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.47	-0.53	+1.00
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.59	-0.55	+1.14
Sharpe Ratio (All Time) Calculated using the full available price history	0.38	-0.61	+0.99

Correlation

The correlation between SSO and BOIL is 0.04, 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

SSO vs. BOIL - Dividend Comparison

SSO's dividend yield for the trailing twelve months is around 0.81%, while BOIL has not paid dividends to shareholders.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
SSO ProShares Ultra S&P500	0.81%	0.68%	0.85%	0.18%	0.50%	0.18%	0.20%	0.50%	0.75%	0.39%	0.51%	0.63%
BOIL ProShares Ultra Bloomberg Natural Gas	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Drawdowns

SSO vs. BOIL - Drawdown Comparison

The maximum SSO drawdown since its inception was -84.67%, smaller than the maximum BOIL drawdown of -100.00%. Use the drawdown chart below to compare losses from any high point for SSO and BOIL.

Drawdown Indicators

	SSO	BOIL	Difference
Max Drawdown Largest peak-to-trough decline	-84.67%	-100.00%	+15.33%
Max Drawdown (1Y) Largest decline over 1 year	-23.17%	-82.08%	+58.91%
Max Drawdown (5Y) Largest decline over 5 years	-46.73%	-99.88%	+53.15%
Max Drawdown (10Y) Largest decline over 10 years	-59.34%	-99.98%	+40.64%
Current Drawdown Current decline from peak	-12.18%	-100.00%	+87.82%
Average Drawdown Average peak-to-trough decline	-19.72%	-93.51%	+73.79%
Ulcer Index Depth and duration of drawdowns from previous peaks	5.44%	60.88%	-55.44%

Volatility

SSO vs. BOIL - Volatility Comparison

The current volatility for ProShares Ultra S&P500 (SSO) is 10.69%, while ProShares Ultra Bloomberg Natural Gas (BOIL) has a volatility of 29.37%. This indicates that SSO experiences smaller price fluctuations and is considered to be less risky than BOIL based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	SSO	BOIL	Difference
Volatility (1M) Calculated over the trailing 1-month period	10.69%	29.37%	-18.68%
Volatility (6M) Calculated over the trailing 6-month period	18.99%	109.37%	-90.38%
Volatility (1Y) Calculated over the trailing 1-year period	36.46%	120.58%	-84.12%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	33.66%	118.63%	-84.97%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	35.86%	101.93%	-66.07%