^SSMI vs. SPY

Last updated Apr 1, 2026

Compare and contrast key facts about Swiss Market Index (^SSMI) and State Street SPDR S&P 500 ETF (SPY).

SPY is a passively managed fund by State Street that tracks the performance of the S&P 500 Index. It was launched on Jan 22, 1993.

Performance

^SSMI vs. SPY - Performance Comparison

The chart below illustrates the hypothetical performance of a CHF 10,000 investment in Swiss Market Index (^SSMI) and State Street SPDR S&P 500 ETF (SPY). The values are adjusted to include any dividend payments, if applicable.

^SSMI vs. SPY - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
^SSMI Swiss Market Index	-3.70%	14.37%	4.16%	3.81%	-16.67%	20.29%	0.82%	25.95%	-10.15%	14.14%
SPY State Street SPDR S&P 500 ETF	-3.83%	2.86%	34.73%	14.88%	-17.06%	32.52%	8.35%	28.99%	-3.64%	16.54%

Different Trading Currencies

^SSMI is traded in CHF, while SPY is traded in USD. To make them comparable, the SPY values have been converted to CHF using the latest available exchange rates.

Returns By Period

The year-to-date returns for both stocks are quite close, with ^SSMI having a -3.70% return and SPY slightly lower at -3.83%. Over the past 10 years, ^SSMI has underperformed SPY with an annualized return of 5.21%, while SPY has yielded a comparatively higher 11.91% annualized return.

^SSMI

• 1D: 0.85%
• 1M: -8.83%
• YTD: -3.70%
• 6M: 5.51%
• 1Y: 1.42%
• 3Y*: 4.78%
• 5Y*: 2.82%
• 10Y*: 5.21%

SPY

• 1D: 2.82%
• 1M: -1.30%
• YTD: -3.83%
• 6M: -1.51%
• 1Y: 6.09%
• 3Y*: 12.90%
• 5Y*: 8.04%
• 10Y*: 11.91%

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

Return for Risk

^SSMI vs. SPY — Risk / Return Rank

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

^SSMI

^SSMI Risk / Return Rank: 16
^SSMI Sharpe Ratio Rank: 19
^SSMI Sortino Ratio Rank: 18
^SSMI Omega Ratio Rank: 18
^SSMI Calmar Ratio Rank: 13
^SSMI Martin Ratio Rank: 14

SPY

SPY Risk / Return Rank: 64
SPY Sharpe Ratio Rank: 56
SPY Sortino Ratio Rank: 60
SPY Omega Ratio Rank: 65
SPY Calmar Ratio Rank: 65
SPY Martin Ratio Rank: 75

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.

^SSMI vs. SPY - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Swiss Market Index (^SSMI) and State Street SPDR S&P 500 ETF (SPY). 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.

	^SSMI	SPY	Difference
Sharpe ratio Return per unit of total volatility	0.10	0.26	-0.16
Sortino ratio Return per unit of downside risk	0.22	0.52	-0.30
Omega ratio Gain probability vs. loss probability	1.03	1.08	-0.05
Calmar ratio Return relative to maximum drawdown	-0.09	0.45	-0.53
Martin ratio Return relative to average drawdown	-0.25	1.72	-1.96
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

^SSMI vs. SPY - Sharpe Ratio Comparison

The current ^SSMI Sharpe Ratio is 0.10, which is lower than the SPY Sharpe Ratio of 0.26. The chart below compares the historical Sharpe Ratios of ^SSMI and SPY, 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

	^SSMI	SPY	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.10	0.26	-0.16
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.21	0.44	-0.23
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.37	0.61	-0.25
Sharpe Ratio (All Time) Calculated using the full available price history	0.35	0.34	+0.01

Correlation

The correlation between ^SSMI and SPY is 0.45, which is considered to be moderate. This suggests that the two assets have some degree of positive relationship in their price movements. Moderate correlation can be acceptable for portfolio diversification, offering a balance between risk and potential returns.

Drawdowns

^SSMI vs. SPY - Drawdown Comparison

The maximum ^SSMI drawdown since its inception was -56.31%, roughly equal to the maximum SPY drawdown of -56.27%. Use the drawdown chart below to compare losses from any high point for ^SSMI and SPY.

Drawdown Indicators

	^SSMI	SPY	Difference
Max Drawdown Largest peak-to-trough decline	-56.31%	-55.19%	-1.12%
Max Drawdown (1Y) Largest decline over 1 year	-14.18%	-12.05%	-2.13%
Max Drawdown (5Y) Largest decline over 5 years	-22.34%	-24.50%	+2.16%
Max Drawdown (10Y) Largest decline over 10 years	-27.54%	-33.72%	+6.18%
Current Drawdown Current decline from peak	-8.83%	-6.24%	-2.59%
Average Drawdown Average peak-to-trough decline	-14.60%	-9.09%	-5.51%
Ulcer Index Depth and duration of drawdowns from previous peaks	5.54%	2.52%	+3.02%

Volatility

^SSMI vs. SPY - Volatility Comparison

Swiss Market Index (^SSMI) has a higher volatility of 5.67% compared to State Street SPDR S&P 500 ETF (SPY) at 4.86%. This indicates that ^SSMI's price experiences larger fluctuations and is considered to be riskier than SPY based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	^SSMI	SPY	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.67%	4.86%	+0.81%
Volatility (6M) Calculated over the trailing 6-month period	8.80%	11.06%	-2.26%
Volatility (1Y) Calculated over the trailing 1-year period	15.10%	23.93%	-8.83%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	13.25%	18.39%	-5.14%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	14.25%	19.52%	-5.27%