AMFAX vs. WFSPX

Last updated Apr 2, 2026

Compare and contrast key facts about AlphaSimplex Managed Futures Strategy Fund Class A (AMFAX) and iShares S&P 500 Index Fund (WFSPX).

AMFAX is managed by BlackRock. It was launched on Jul 30, 2010. WFSPX is a passively managed fund by BlackRock that tracks the performance of the S&P 500 Index. It was launched on Jul 30, 1993.

Performance

AMFAX vs. WFSPX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in AlphaSimplex Managed Futures Strategy Fund Class A (AMFAX) and iShares S&P 500 Index Fund (WFSPX). The values are adjusted to include any dividend payments, if applicable.

AMFAX vs. WFSPX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
AMFAX AlphaSimplex Managed Futures Strategy Fund Class A	6.69%	-9.75%	-3.56%	-10.59%	35.38%	3.28%	13.29%	8.03%	-12.87%	6.54%
WFSPX iShares S&P 500 Index Fund	-4.63%	17.83%	24.94%	26.25%	-18.14%	28.63%	18.43%	31.45%	-4.83%	21.27%

Returns By Period

In the year-to-date period, AMFAX achieves a 6.69% return, which is significantly higher than WFSPX's -4.63% return. Over the past 10 years, AMFAX has underperformed WFSPX with an annualized return of 1.57%, while WFSPX has yielded a comparatively higher 13.92% annualized return.

AMFAX

• 1D: 0.25%
• 1M: -0.85%
• YTD: 6.69%
• 6M: 10.56%
• 1Y: 3.12%
• 3Y*: -3.09%
• 5Y*: 2.04%
• 10Y*: 1.57%

WFSPX

• 1D: 2.62%
• 1M: -5.31%
• YTD: -4.63%
• 6M: -2.47%
• 1Y: 16.96%
• 3Y*: 18.15%
• 5Y*: 11.69%
• 10Y*: 13.92%

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

AMFAX vs. WFSPX - Expense Ratio Comparison

AMFAX has a 1.72% expense ratio, which is higher than WFSPX's 0.03% expense ratio.

AMFAX

AlphaSimplex Managed Futures Strategy Fund Class A

WFSPX

iShares S&P 500 Index Fund

Return for Risk

AMFAX vs. WFSPX — Risk / Return Rank

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

AMFAX

AMFAX Risk / Return Rank: 8
AMFAX Sharpe Ratio Rank: 10
AMFAX Sortino Ratio Rank: 8
AMFAX Omega Ratio Rank: 9
AMFAX Calmar Ratio Rank: 8
AMFAX Martin Ratio Rank: 7

WFSPX

WFSPX Risk / Return Rank: 58
WFSPX Sharpe Ratio Rank: 46
WFSPX Sortino Ratio Rank: 51
WFSPX Omega Ratio Rank: 54
WFSPX Calmar Ratio Rank: 62
WFSPX Martin Ratio Rank: 74

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.

AMFAX vs. WFSPX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for AlphaSimplex Managed Futures Strategy Fund Class A (AMFAX) and iShares S&P 500 Index Fund (WFSPX). 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.

	AMFAX	WFSPX	Difference
Sharpe ratio Return per unit of total volatility	0.26	0.96	-0.70
Sortino ratio Return per unit of downside risk	0.40	1.47	-1.06
Omega ratio Gain probability vs. loss probability	1.06	1.22	-0.16
Calmar ratio Return relative to maximum drawdown	0.16	1.49	-1.33
Martin ratio Return relative to average drawdown	0.27	7.15	-6.89
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

AMFAX vs. WFSPX - Sharpe Ratio Comparison

The current AMFAX Sharpe Ratio is 0.26, which is lower than the WFSPX Sharpe Ratio of 0.96. The chart below compares the historical Sharpe Ratios of AMFAX and WFSPX, 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

	AMFAX	WFSPX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.26	0.96	-0.70
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.15	0.70	-0.55
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.12	0.78	-0.65
Sharpe Ratio (All Time) Calculated using the full available price history	0.29	0.13	+0.16

Correlation

The correlation between AMFAX and WFSPX is 0.21, which is considered to be low. This implies their price changes are not closely related. A low correlation is generally favorable for portfolio diversification, as it helps to reduce overall risk by spreading it across multiple assets with different performance patterns.

Dividends

AMFAX vs. WFSPX - Dividend Comparison

AMFAX's dividend yield for the trailing twelve months is around 1.72%, more than WFSPX's 1.54% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
AMFAX AlphaSimplex Managed Futures Strategy Fund Class A	1.72%	1.84%	1.28%	0.30%	32.70%	5.74%	3.14%	4.71%	1.31%	0.00%	0.00%	4.92%
WFSPX iShares S&P 500 Index Fund	1.54%	1.72%	1.41%	1.50%	2.02%	1.82%	1.66%	1.99%	2.00%	1.62%	2.37%	2.49%

Drawdowns

AMFAX vs. WFSPX - Drawdown Comparison

The maximum AMFAX drawdown since its inception was -36.84%, smaller than the maximum WFSPX drawdown of -58.21%. Use the drawdown chart below to compare losses from any high point for AMFAX and WFSPX.

Drawdown Indicators

	AMFAX	WFSPX	Difference
Max Drawdown Largest peak-to-trough decline	-36.84%	-58.21%	+21.37%
Max Drawdown (1Y) Largest decline over 1 year	-13.54%	-12.11%	-1.43%
Max Drawdown (5Y) Largest decline over 5 years	-36.84%	-24.51%	-12.33%
Max Drawdown (10Y) Largest decline over 10 years	-36.84%	-33.74%	-3.10%
Current Drawdown Current decline from peak	-24.86%	-6.51%	-18.35%
Average Drawdown Average peak-to-trough decline	-13.55%	-12.84%	-0.71%
Ulcer Index Depth and duration of drawdowns from previous peaks	8.33%	2.53%	+5.80%

Volatility

AMFAX vs. WFSPX - Volatility Comparison

The current volatility for AlphaSimplex Managed Futures Strategy Fund Class A (AMFAX) is 3.91%, while iShares S&P 500 Index Fund (WFSPX) has a volatility of 5.17%. This indicates that AMFAX experiences smaller price fluctuations and is considered to be less risky than WFSPX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	AMFAX	WFSPX	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.91%	5.17%	-1.26%
Volatility (6M) Calculated over the trailing 6-month period	10.01%	9.44%	+0.57%
Volatility (1Y) Calculated over the trailing 1-year period	13.03%	18.21%	-5.18%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	13.68%	16.88%	-3.20%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	12.67%	18.00%	-5.33%