SSSYX vs. SSAIX

Last updated Aug 4, 2026

SSSYX (State Street Equity 500 Index Fund Class K) and SSAIX (State Street International Stock Selection Fund) are both mutual funds - SSSYX is a S&P 500 fund tracking the S&P 500 Index, while SSAIX is a Foreign Large Cap Equities fund managed by State Street. Over the past 10 years, SSSYX returned 44.89%/yr vs 8.60%/yr for SSAIX. Their 0.65 correlation means they have sometimes moved together and sometimes differently. SSSYX charges 0.02%/yr vs 1.00%/yr for SSAIX.

Performance

SSSYX vs. SSAIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in State Street Equity 500 Index Fund Class K (SSSYX) and State Street International Stock Selection Fund (SSAIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, SSSYX achieves a 10.11% return, which is significantly lower than SSAIX's 13.55% return. Over the past 10 years, SSSYX has outperformed SSAIX with an annualized return of 44.89%, while SSAIX has yielded a comparatively lower 8.60% annualized return.

SSSYX

• 1D: 0.71%
• 1M: 0.15%
• 6M: 7.96%
• YTD: 10.11%
• 1Y: 21.46%
• 3Y*: 19.39%
• 5Y*: 12.81%
• 10Y*: 44.89%
• ALL TIME*: 37.71%

SSAIX

• 1D: -0.61%
• 1M: 2.14%
• 6M: 6.62%
• YTD: 13.55%
• 1Y: 22.26%
• 3Y*: 18.53%
• 5Y*: 10.43%
• 10Y*: 8.60%
• ALL TIME*: 5.16%

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

Liquidity Comparison

Position	Avg. Volume Value (2W)	Avg. Volume Value (1M)	Avg. Volume Value (3M)
SSAIX State Street International Stock Selection Fund	$0.00	$0.00	$0.00
SSSYX State Street Equity 500 Index Fund Class K	$0.00	$0.00	$0.00

SSSYX vs. SSAIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
SSSYX State Street Equity 500 Index Fund Class K	10.11%	17.81%	24.99%	26.27%	-18.16%	28.51%	1,083.11%	31.38%	-4.38%	21.61%
SSAIX State Street International Stock Selection Fund	13.55%	31.50%	7.90%	17.53%	-13.60%	12.77%	2.88%	16.78%	-17.69%	22.21%

Correlation

The correlation between SSSYX and SSAIX is 0.55, which is moderate. They have sometimes moved together and sometimes differently, sharing some price drivers without tracking each other closely.

	Correlation
Correlation (1Y) Focuses on recent behavior, but can change the most.	0.55
Correlation (3Y) Balances recent behavior with more history.	0.53
Correlation (5Y) Shows whether the relationship held over a longer period.	0.63
Correlation (10Y) Provides a long-term view across more market conditions.	0.64
Correlation (All Time) Calculated using the full available price history since Sep 18, 2014	0.65

The correlation between SSSYX and SSAIX shifts across timeframes, from 0.53 (3 years) to 0.65 (all time), reflecting how their relationship changes across market environments.

Return for Risk

SSSYX vs. SSAIX — Risk / Return Rank

Compare historical risk-adjusted metric ranks over the past 12 months.

SSSYX

SSSYX Risk / Return Rank: 59
SSSYX Sharpe Ratio Rank: 56
SSSYX Sortino Ratio Rank: 52
SSSYX Omega Ratio Rank: 52
SSSYX Calmar Ratio Rank: 61
SSSYX Martin Ratio Rank: 74

SSAIX

SSAIX Risk / Return Rank: 54
SSAIX Sharpe Ratio Rank: 50
SSAIX Sortino Ratio Rank: 39
SSAIX Omega Ratio Rank: 61
SSAIX Calmar Ratio Rank: 72
SSAIX Martin Ratio Rank: 46

The rank (0–100) uses a weighted average of the Sharpe, Sortino, Omega, Calmar, and Martin percentile ranks for the trailing 12 months. Higher means stronger historical risk-adjusted performance within the peer group.

SSSYX vs. SSAIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for State Street Equity 500 Index Fund Class K (SSSYX) and State Street International Stock Selection Fund (SSAIX). 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.

	SSSYX	SSAIX	Difference
Sharpe ratio: Return per unit of total volatility	1.52	1.46	+0.07
Sortino ratio: Return per unit of downside risk	2.12	1.88	+0.24
Omega ratio: Gain probability vs. loss probability	1.27	1.30	-0.02
Calmar ratio: Return relative to maximum drawdown	2.21	2.47	-0.26
Martin ratio: Return relative to average drawdown	9.47	6.93	+2.55

SSSYX vs. SSAIX - Sharpe Ratio Comparison

The current SSSYX Sharpe Ratio is 1.52, which is comparable to the SSAIX Sharpe Ratio of 1.46. The chart below compares the historical Sharpe Ratios of SSSYX and SSAIX, 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

SSSYX vs. SSAIX - Drawdown Comparison

The maximum SSSYX drawdown since its inception was -33.77%, smaller than the maximum SSAIX drawdown of -61.30%. Use the drawdown chart below to compare losses from any high point for SSSYX and SSAIX.

Drawdown Indicators

	SSSYX	SSAIX	Difference
Max Drawdown Largest peak-to-trough decline	-33.77%	-61.30%	+27.53%
Max Drawdown (1Y) Largest decline over 1 year	-8.88%	-10.98%	+2.10%
Max Drawdown (3Y) Largest decline over 3 years	-18.74%	-13.00%	-5.74%
Max Drawdown (5Y) Largest decline over 5 years	-24.49%	-29.25%	+4.76%
Max Drawdown (10Y) Largest decline over 10 years	-33.77%	-41.34%	+7.57%
Current Drawdown Current decline from peak	-1.42%	-0.61%	-0.81%
Average Drawdown Average peak-to-trough decline	-3.89%	-15.74%	+11.85%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.07%	3.61%	-1.54%

Volatility

SSSYX vs. SSAIX - Volatility Comparison

The current volatility for State Street Equity 500 Index Fund Class K (SSSYX) is 3.52%, while State Street International Stock Selection Fund (SSAIX) has a volatility of 4.54%. This indicates that SSSYX experiences smaller price fluctuations and is considered to be less risky than SSAIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	SSSYX	SSAIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.52%	4.54%	-1.02%
Volatility (6M) Calculated over the trailing 6-month period	10.10%	12.55%	-2.45%
Volatility (1Y) Calculated over the trailing 1-year period	12.86%	18.61%	-5.75%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.00%	16.90%	+0.10%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	121.13%	16.76%	+104.37%

SSSYX vs. SSAIX - Expense Ratio Comparison

SSSYX has a 0.02% expense ratio, which is lower than SSAIX's 1.00% expense ratio.

Dividends

SSSYX vs. SSAIX - Dividend Comparison

SSSYX's dividend yield for the trailing twelve months is around 1.31%, while SSAIX has not paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
SSAIX State Street International Stock Selection Fund	0.00%	0.00%	3.64%	5.68%	3.47%	4.55%	1.88%	3.34%	5.99%	3.63%	2.74%	2.55%
SSSYX State Street Equity 500 Index Fund Class K	1.31%	1.44%	1.63%	1.78%	2.16%	2.76%	1.86%	4.44%	5.18%	5.94%	2.07%	1.84%

Frequently Asked Questions

Can I hold both SSSYX and SSAIX in my portfolio?

SSSYX and SSAIX have a correlation of 0.55, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, SSSYX or SSAIX?

SSAIX has higher volatility (4.54%) compared to SSSYX (3.52%). In terms of maximum drawdown, SSSYX dropped -33.77% vs SSAIX's -61.30%.

Which has better risk-adjusted returns?

SSSYX currently has the higher Sharpe Ratio (1.52 vs 1.46), 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.