SFAAX vs. VOO

Last updated Jun 24, 2026

SFAAX (Allspring Index Asset Allocation Fund) and VOO (Vanguard S&P 500 ETF) are both funds - SFAAX is a Diversified Portfolio fund managed by Allspring Global Investments, while VOO is a S&P 500 fund tracking the S&P 500 Index. Over the past 10 years, SFAAX returned 9.45%/yr vs 15.61%/yr for VOO. With a 0.96 correlation, they move nearly in lockstep. SFAAX charges 1.08%/yr vs 0.03%/yr for VOO.

Performance

SFAAX vs. VOO - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Allspring Index Asset Allocation Fund (SFAAX) and Vanguard S&P 500 ETF (VOO). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, SFAAX achieves a 5.76% return, which is significantly lower than VOO's 8.19% return. Over the past 10 years, SFAAX has underperformed VOO with an annualized return of 9.45%, while VOO has yielded a comparatively higher 15.61% annualized return.

SFAAX

• 1D: -0.32%
• 1M: 0.00%
• YTD: 5.76%
• 6M: 5.04%
• 1Y: 16.07%
• 3Y*: 13.21%
• 5Y*: 7.13%
• 10Y*: 9.45%

VOO

• 1D: -1.42%
• 1M: -1.34%
• YTD: 8.19%
• 6M: 7.24%
• 1Y: 23.69%
• 3Y*: 20.78%
• 5Y*: 13.13%
• 10Y*: 15.61%

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

SFAAX vs. VOO - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
SFAAX Allspring Index Asset Allocation Fund	5.76%	11.39%	14.61%	16.64%	-17.03%	15.76%	16.21%	21.52%	-2.82%	12.25%
VOO Vanguard S&P 500 ETF	8.19%	17.82%	24.98%	26.32%	-18.17%	28.79%	18.32%	31.37%	-4.50%	21.77%

Correlation

The correlation between SFAAX and VOO is 0.98 - these two move nearly in lockstep. At this level, holding both provides almost no diversification benefit. If you already own one, adding the other does little to reduce portfolio risk.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.98
Correlation (3Y) Calculated over the trailing 3-year period	0.96
Correlation (5Y) Calculated over the trailing 5-year period	0.96
Correlation (10Y) Calculated over the trailing 10-year period	0.96
Correlation (All Time) Calculated using the full available price history since Sep 9, 2010	0.96

The correlation between SFAAX and VOO has been stable across timeframes, ranging from 0.96 to 0.98 - a consistent structural relationship.

Return for Risk

SFAAX vs. VOO — Risk / Return Rank

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

SFAAX

SFAAX Risk / Return Rank: 57
SFAAX Sharpe Ratio Rank: 52
SFAAX Sortino Ratio Rank: 51
SFAAX Omega Ratio Rank: 51
SFAAX Calmar Ratio Rank: 65
SFAAX Martin Ratio Rank: 67

VOO

VOO Risk / Return Rank: 59
VOO Sharpe Ratio Rank: 59
VOO Sortino Ratio Rank: 56
VOO Omega Ratio Rank: 58
VOO Calmar Ratio Rank: 56
VOO Martin Ratio Rank: 67

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.

SFAAX vs. VOO - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Allspring Index Asset Allocation Fund (SFAAX) and Vanguard S&P 500 ETF (VOO). 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.

	SFAAX	VOO	Difference
Sharpe ratio: Return per unit of total volatility	1.97	1.91	+0.06
Sortino ratio: Return per unit of downside risk	2.75	2.60	+0.15
Omega ratio: Gain probability vs. loss probability	1.36	1.35	+0.01
Calmar ratio: Return relative to maximum drawdown	2.97	2.67	+0.29
Martin ratio: Return relative to average drawdown	12.29	11.96	+0.33

SFAAX vs. VOO - Sharpe Ratio Comparison

The current SFAAX Sharpe Ratio is 1.97, which is comparable to the VOO Sharpe Ratio of 1.91. The chart below compares the historical Sharpe Ratios of SFAAX and VOO, 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

SFAAX vs. VOO - Drawdown Comparison

The maximum SFAAX drawdown since its inception was -47.78%, which is greater than VOO's maximum drawdown of -33.99%. Use the drawdown chart below to compare losses from any high point for SFAAX and VOO.

Drawdown Indicators

	SFAAX	VOO	Difference
Max Drawdown Largest peak-to-trough decline	-47.78%	-33.99%	-13.79%
Max Drawdown (1Y) Largest decline over 1 year	-5.69%	-8.90%	+3.21%
Max Drawdown (3Y) Largest decline over 3 years	-11.69%	-18.69%	+7.00%
Max Drawdown (5Y) Largest decline over 5 years	-24.32%	-24.52%	+0.20%
Max Drawdown (10Y) Largest decline over 10 years	-24.32%	-33.99%	+9.67%
Current Drawdown Current decline from peak	-1.30%	-3.14%	+1.84%
Average Drawdown Average peak-to-trough decline	-5.84%	-3.68%	-2.16%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.37%	1.99%	-0.62%

Volatility

SFAAX vs. VOO - Volatility Comparison

The current volatility for Allspring Index Asset Allocation Fund (SFAAX) is 3.31%, while Vanguard S&P 500 ETF (VOO) has a volatility of 4.83%. This indicates that SFAAX experiences smaller price fluctuations and is considered to be less risky than VOO based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	SFAAX	VOO	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.31%	4.83%	-1.52%
Volatility (6M) Calculated over the trailing 6-month period	6.66%	9.82%	-3.16%
Volatility (1Y) Calculated over the trailing 1-year period	8.56%	12.46%	-3.90%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	11.43%	16.91%	-5.48%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	11.43%	18.02%	-6.59%

SFAAX vs. VOO - Expense Ratio Comparison

SFAAX has a 1.08% expense ratio, which is higher than VOO's 0.03% expense ratio.

Dividends

SFAAX vs. VOO - Dividend Comparison

SFAAX's dividend yield for the trailing twelve months is around 11.97%, more than VOO's 1.05% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
SFAAX Allspring Index Asset Allocation Fund	11.97%	12.65%	12.74%	7.46%	4.98%	5.92%	3.77%	3.60%	3.88%	1.27%	1.66%	6.34%
VOO Vanguard S&P 500 ETF	1.05%	1.13%	1.24%	1.46%	1.69%	1.25%	1.54%	1.88%	2.06%	1.78%	2.02%	2.10%

Frequently Asked Questions

Can I hold both SFAAX and VOO in my portfolio?

With a correlation of 0.98, SFAAX and VOO move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.

Which is riskier, SFAAX or VOO?

VOO has higher volatility (4.83%) compared to SFAAX (3.31%). In terms of maximum drawdown, SFAAX dropped -47.78% vs VOO's -33.99%.

Which has better risk-adjusted returns?

SFAAX currently has the higher Sharpe Ratio (1.97 vs 1.91), 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.