EIX vs. SSO

Last updated Jun 24, 2026

EIX (Edison International) is a stock, while SSO (ProShares Ultra S&P500) is Leveraged Equities fund tracking the S&P 500. Over the past 10 years, EIX returned 4.04%/yr vs 24.26%/yr for SSO. At a 0.41 correlation, their price movements are largely independent.

Performance

EIX vs. SSO - Performance Comparison

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

Returns By Period

In the year-to-date period, EIX achieves a 24.80% return, which is significantly higher than SSO's 12.95% return. Over the past 10 years, EIX has underperformed SSO with an annualized return of 4.04%, while SSO has yielded a comparatively higher 24.26% annualized return.

EIX

• 1D: 1.02%
• 1M: 2.47%
• YTD: 24.80%
• 6M: 24.72%
• 1Y: 54.05%
• 3Y*: 7.66%
• 5Y*: 10.81%
• 10Y*: 4.04%

SSO

• 1D: -2.86%
• 1M: -3.30%
• YTD: 12.95%
• 6M: 10.86%
• 1Y: 42.28%
• 3Y*: 33.83%
• 5Y*: 17.91%
• 10Y*: 24.26%

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

EIX vs. SSO - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
EIX Edison International	24.80%	-20.42%	15.24%	17.37%	-2.58%	13.59%	-12.75%	37.61%	-6.65%	-9.48%
SSO ProShares Ultra S&P500	12.95%	26.19%	43.48%	46.65%	-38.98%	60.57%	21.54%	63.45%	-14.60%	44.35%

Correlation

The correlation between EIX and SSO is 0.09, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.09
Correlation (3Y) Calculated over the trailing 3-year period	0.23
Correlation (5Y) Calculated over the trailing 5-year period	0.31
Correlation (10Y) Calculated over the trailing 10-year period	0.31
Correlation (All Time) Calculated using the full available price history since Jun 21, 2006	0.41

Over the past year, the correlation between EIX and SSO has dropped to 0.09 - well below their long-term average of 0.41, suggesting their price drivers have been diverging.

Return for Risk

EIX vs. SSO — Risk / Return Rank

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

EIX

EIX Risk / Return Rank: 90
EIX Sharpe Ratio Rank: 91
EIX Sortino Ratio Rank: 89
EIX Omega Ratio Rank: 87
EIX Calmar Ratio Rank: 92
EIX Martin Ratio Rank: 92

SSO

SSO Risk / Return Rank: 50
SSO Sharpe Ratio Rank: 51
SSO Sortino Ratio Rank: 46
SSO Omega Ratio Rank: 48
SSO Calmar Ratio Rank: 49
SSO Martin Ratio Rank: 58

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.

EIX vs. SSO - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Edison International (EIX) and ProShares Ultra S&P500 (SSO). 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.

	EIX	SSO	Difference
Sharpe ratio: Return per unit of total volatility	2.26	1.71	+0.55
Sortino ratio: Return per unit of downside risk	2.97	2.24	+0.73
Omega ratio: Gain probability vs. loss probability	1.36	1.30	+0.07
Calmar ratio: Return relative to maximum drawdown	5.23	2.34	+2.89
Martin ratio: Return relative to average drawdown	13.84	9.90	+3.94

EIX vs. SSO - Sharpe Ratio Comparison

The current EIX Sharpe Ratio is 2.26, which is higher than the SSO Sharpe Ratio of 1.71. The chart below compares the historical Sharpe Ratios of EIX and SSO, 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

EIX vs. SSO - Drawdown Comparison

The maximum EIX drawdown since its inception was -72.18%, smaller than the maximum SSO drawdown of -84.67%. Use the drawdown chart below to compare losses from any high point for EIX and SSO.

Drawdown Indicators

	EIX	SSO	Difference
Max Drawdown Largest peak-to-trough decline	-72.18%	-84.67%	+12.49%
Max Drawdown (1Y) Largest decline over 1 year	-10.39%	-18.17%	+7.78%
Max Drawdown (3Y) Largest decline over 3 years	-43.88%	-35.21%	-8.67%
Max Drawdown (5Y) Largest decline over 5 years	-43.88%	-46.73%	+2.85%
Max Drawdown (10Y) Largest decline over 10 years	-43.88%	-59.34%	+15.46%
Current Drawdown Current decline from peak	-10.26%	-6.70%	-3.56%
Average Drawdown Average peak-to-trough decline	-15.02%	-19.53%	+4.51%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.92%	4.28%	-0.36%

Volatility

EIX vs. SSO - Volatility Comparison

The current volatility for Edison International (EIX) is 6.58%, while ProShares Ultra S&P500 (SSO) has a volatility of 9.70%. This indicates that EIX experiences smaller price fluctuations and is considered to be less risky than SSO based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	EIX	SSO	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.58%	9.70%	-3.12%
Volatility (6M) Calculated over the trailing 6-month period	17.07%	19.65%	-2.58%
Volatility (1Y) Calculated over the trailing 1-year period	24.05%	24.92%	-0.87%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	25.43%	33.85%	-8.42%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	28.09%	35.93%	-7.84%

Dividends

EIX vs. SSO - Dividend Comparison

EIX's dividend yield for the trailing twelve months is around 4.68%, more than SSO's 0.65% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
EIX Edison International	4.68%	5.51%	2.93%	4.19%	4.46%	3.94%	4.10%	3.28%	4.28%	3.53%	2.75%	2.93%
SSO ProShares Ultra S&P500	0.65%	0.68%	0.85%	0.18%	0.50%	0.18%	0.20%	0.50%	0.75%	0.39%	0.51%	0.63%

Frequently Asked Questions

Can I hold both EIX and SSO in my portfolio?

EIX and SSO have a correlation of 0.09, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, EIX or SSO?

SSO has higher volatility (9.70%) compared to EIX (6.58%). In terms of maximum drawdown, EIX dropped -72.18% vs SSO's -84.67%.

Which has better risk-adjusted returns?

EIX currently has the higher Sharpe Ratio (2.26 vs 1.71), 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.