SVSPX vs. SSAFX

Last updated Jun 24, 2026

SVSPX (State Street S&P 500 Index Fund Class N) and SSAFX (State Street Aggregate Bond Index Portfolio) are both mutual funds - SVSPX is a Large Cap Blend Equities fund tracking the S&P 500 Index, while SSAFX is a Intermediate Core Bond fund managed by State Street. Over the past 10 years, SVSPX returned 15.65%/yr vs 27.74%/yr for SSAFX. At a correlation of -0.05, they often move in opposite directions. SVSPX charges 0.16%/yr vs 0.02%/yr for SSAFX.

Performance

SVSPX vs. SSAFX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in State Street S&P 500 Index Fund Class N (SVSPX) and State Street Aggregate Bond Index Portfolio (SSAFX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, SVSPX achieves a 9.71% return, which is significantly higher than SSAFX's 0.33% return. Over the past 10 years, SVSPX has underperformed SSAFX with an annualized return of 15.65%, while SSAFX has yielded a comparatively higher 27.74% annualized return.

SVSPX

• 1D: -0.37%
• 1M: 0.47%
• YTD: 9.71%
• 6M: 8.71%
• 1Y: 25.50%
• 3Y*: 21.37%
• 5Y*: 13.49%
• 10Y*: 15.65%

SSAFX

• 1D: -0.29%
• 1M: 0.60%
• YTD: 0.33%
• 6M: 0.47%
• 1Y: 4.23%
• 3Y*: 3.80%
• 5Y*: -0.06%
• 10Y*: 27.74%

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

SVSPX vs. SSAFX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
SVSPX State Street S&P 500 Index Fund Class N	9.71%	17.83%	25.07%	26.21%	-18.31%	28.38%	18.48%	31.27%	-4.87%	21.71%
SSAFX State Street Aggregate Bond Index Portfolio	0.33%	6.81%	1.34%	5.61%	-13.30%	-1.72%	978.57%	8.69%	-0.12%	3.38%

Correlation

The correlation between SVSPX and SSAFX is 0.25, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.25
Correlation (3Y) Calculated over the trailing 3-year period	0.22
Correlation (5Y) Calculated over the trailing 5-year period	0.15
Correlation (10Y) Calculated over the trailing 10-year period	0.01
Correlation (All Time) Calculated using the full available price history since Sep 22, 2014	-0.05

The correlation between SVSPX and SSAFX shifts across timeframes, from -0.05 (all time) to 0.25 (1 year), reflecting how their relationship changes across market environments.

Return for Risk

SVSPX vs. SSAFX — Risk / Return Rank

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

SVSPX

SVSPX Risk / Return Rank: 82
SVSPX Sharpe Ratio Rank: 82
SVSPX Sortino Ratio Rank: 79
SVSPX Omega Ratio Rank: 75
SVSPX Calmar Ratio Rank: 84
SVSPX Martin Ratio Rank: 91

SSAFX

SSAFX Risk / Return Rank: 21
SSAFX Sharpe Ratio Rank: 21
SSAFX Sortino Ratio Rank: 22
SSAFX Omega Ratio Rank: 19
SSAFX Calmar Ratio Rank: 23
SSAFX Martin Ratio Rank: 20

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.

SVSPX vs. SSAFX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for State Street S&P 500 Index Fund Class N (SVSPX) and State Street Aggregate Bond Index Portfolio (SSAFX). 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.

	SVSPX	SSAFX	Difference
Sharpe ratio: Return per unit of total volatility	2.47	1.21	+1.26
Sortino ratio: Return per unit of downside risk	3.45	1.82	+1.63
Omega ratio: Gain probability vs. loss probability	1.44	1.21	+0.23
Calmar ratio: Return relative to maximum drawdown	3.70	1.63	+2.07
Martin ratio: Return relative to average drawdown	16.89	4.67	+12.23

SVSPX vs. SSAFX - Sharpe Ratio Comparison

The current SVSPX Sharpe Ratio is 2.47, which is higher than the SSAFX Sharpe Ratio of 1.21. The chart below compares the historical Sharpe Ratios of SVSPX and SSAFX, 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

SVSPX vs. SSAFX - Drawdown Comparison

The maximum SVSPX drawdown since its inception was -55.76%, which is greater than SSAFX's maximum drawdown of -18.74%. Use the drawdown chart below to compare losses from any high point for SVSPX and SSAFX.

Drawdown Indicators

	SVSPX	SSAFX	Difference
Max Drawdown Largest peak-to-trough decline	-55.76%	-18.74%	-37.02%
Max Drawdown (1Y) Largest decline over 1 year	-8.93%	-2.74%	-6.19%
Max Drawdown (3Y) Largest decline over 3 years	-19.09%	-6.09%	-13.00%
Max Drawdown (5Y) Largest decline over 5 years	-24.59%	-18.10%	-6.49%
Max Drawdown (10Y) Largest decline over 10 years	-33.69%	-18.74%	-14.95%
Current Drawdown Current decline from peak	-1.73%	-2.71%	+0.98%
Average Drawdown Average peak-to-trough decline	-9.23%	-4.40%	-4.83%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.92%	0.96%	+0.96%

Volatility

SVSPX vs. SSAFX - Volatility Comparison

State Street S&P 500 Index Fund Class N (SVSPX) has a higher volatility of 4.84% compared to State Street Aggregate Bond Index Portfolio (SSAFX) at 1.08%. This indicates that SVSPX's price experiences larger fluctuations and is considered to be riskier than SSAFX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	SVSPX	SSAFX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.84%	1.08%	+3.76%
Volatility (6M) Calculated over the trailing 6-month period	10.68%	2.74%	+7.94%
Volatility (1Y) Calculated over the trailing 1-year period	13.40%	3.69%	+9.71%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	17.54%	5.95%	+11.59%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.39%	277.57%	-259.18%

SVSPX vs. SSAFX - Expense Ratio Comparison

SVSPX has a 0.16% expense ratio, which is higher than SSAFX's 0.02% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

SVSPX vs. SSAFX - Dividend Comparison

SVSPX's dividend yield for the trailing twelve months is around 7.31%, more than SSAFX's 4.17% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
SSAFX State Street Aggregate Bond Index Portfolio	4.17%	3.70%	3.76%	3.16%	2.49%	1.90%	2.41%	2.88%	2.82%	2.42%	2.21%	3.21%
SVSPX State Street S&P 500 Index Fund Class N	7.31%	8.28%	9.39%	12.38%	10.53%	11.65%	15.98%	6.40%	13.29%	4.94%	8.63%	4.05%

Frequently Asked Questions

Can I hold both SVSPX and SSAFX in my portfolio?

SVSPX and SSAFX have a correlation of 0.25, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, SVSPX or SSAFX?

SVSPX has higher volatility (4.84%) compared to SSAFX (1.08%). In terms of maximum drawdown, SVSPX dropped -55.76% vs SSAFX's -18.74%.

Which has better risk-adjusted returns?

SVSPX currently has the higher Sharpe Ratio (2.47 vs 1.21), 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.