WFSPX vs. ASFYX

Last updated Apr 1, 2026

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

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. ASFYX is managed by BlackRock. It was launched on Jul 30, 2010.

Performance

WFSPX vs. ASFYX - Performance Comparison

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

WFSPX vs. ASFYX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
WFSPX iShares S&P 500 Index Fund	-7.06%	17.83%	24.94%	26.25%	-18.14%	28.63%	18.43%	31.45%	-4.83%	21.27%
ASFYX AlphaSimplex Managed Futures Strategy Fund Class Y	6.59%	-9.67%	-3.22%	-10.33%	35.67%	3.52%	13.59%	8.99%	-12.59%	6.78%

Returns By Period

In the year-to-date period, WFSPX achieves a -7.06% return, which is significantly lower than ASFYX's 6.59% return. Over the past 10 years, WFSPX has outperformed ASFYX with an annualized return of 13.63%, while ASFYX has yielded a comparatively lower 1.87% annualized return.

WFSPX

• 1D: -0.39%
• 1M: -7.68%
• YTD: -7.06%
• 6M: -4.63%
• 1Y: 14.40%
• 3Y*: 17.13%
• 5Y*: 11.37%
• 10Y*: 13.63%

ASFYX

• 1D: 0.00%
• 1M: -1.55%
• YTD: 6.59%
• 6M: 10.95%
• 1Y: 3.41%
• 3Y*: -2.89%
• 5Y*: 2.30%
• 10Y*: 1.87%

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

WFSPX vs. ASFYX - Expense Ratio Comparison

WFSPX has a 0.03% expense ratio, which is lower than ASFYX's 1.47% expense ratio.

ASFYX

AlphaSimplex Managed Futures Strategy Fund Class Y

WFSPX

iShares S&P 500 Index Fund

Return for Risk

WFSPX vs. ASFYX — Risk / Return Rank

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

WFSPX

WFSPX Risk / Return Rank: 46
WFSPX Sharpe Ratio Rank: 41
WFSPX Sortino Ratio Rank: 45
WFSPX Omega Ratio Rank: 50
WFSPX Calmar Ratio Rank: 41
WFSPX Martin Ratio Rank: 53

ASFYX

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

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.

WFSPX vs. ASFYX - Risk-Adjusted Trends Comparison

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

	WFSPX	ASFYX	Difference
Sharpe ratio Return per unit of total volatility	0.84	0.18	+0.66
Sortino ratio Return per unit of downside risk	1.30	0.30	+1.00
Omega ratio Gain probability vs. loss probability	1.20	1.04	+0.15
Calmar ratio Return relative to maximum drawdown	1.06	0.10	+0.96
Martin ratio Return relative to average drawdown	5.13	0.16	+4.97
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

WFSPX vs. ASFYX - Sharpe Ratio Comparison

The current WFSPX Sharpe Ratio is 0.84, which is higher than the ASFYX Sharpe Ratio of 0.18. The chart below compares the historical Sharpe Ratios of WFSPX and ASFYX, 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

	WFSPX	ASFYX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.84	0.18	+0.66
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.68	0.17	+0.51
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.76	0.15	+0.61
Sharpe Ratio (All Time) Calculated using the full available price history	0.13	0.31	-0.18

Correlation

The correlation between WFSPX and ASFYX 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

WFSPX vs. ASFYX - Dividend Comparison

WFSPX's dividend yield for the trailing twelve months is around 1.58%, more than ASFYX's 1.43% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
WFSPX iShares S&P 500 Index Fund	1.58%	1.72%	1.41%	1.50%	2.02%	1.82%	1.66%	1.99%	2.00%	1.62%	2.37%	2.49%
ASFYX AlphaSimplex Managed Futures Strategy Fund Class Y	1.43%	1.52%	1.46%	0.99%	32.48%	6.07%	3.40%	5.51%	1.30%	0.07%	0.01%	5.06%

Drawdowns

WFSPX vs. ASFYX - Drawdown Comparison

The maximum WFSPX drawdown since its inception was -58.21%, which is greater than ASFYX's maximum drawdown of -36.43%. Use the drawdown chart below to compare losses from any high point for WFSPX and ASFYX.

Drawdown Indicators

	WFSPX	ASFYX	Difference
Max Drawdown Largest peak-to-trough decline	-58.21%	-36.43%	-21.78%
Max Drawdown (1Y) Largest decline over 1 year	-12.11%	-13.51%	+1.40%
Max Drawdown (5Y) Largest decline over 5 years	-24.51%	-36.43%	+11.92%
Max Drawdown (10Y) Largest decline over 10 years	-33.74%	-36.43%	+2.69%
Current Drawdown Current decline from peak	-8.90%	-24.37%	+15.47%
Average Drawdown Average peak-to-trough decline	-12.84%	-13.09%	+0.25%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.49%	8.72%	-6.23%

Volatility

WFSPX vs. ASFYX - Volatility Comparison

iShares S&P 500 Index Fund (WFSPX) has a higher volatility of 4.24% compared to AlphaSimplex Managed Futures Strategy Fund Class Y (ASFYX) at 3.86%. This indicates that WFSPX's price experiences larger fluctuations and is considered to be riskier than ASFYX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	WFSPX	ASFYX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.24%	3.86%	+0.38%
Volatility (6M) Calculated over the trailing 6-month period	9.08%	10.01%	-0.93%
Volatility (1Y) Calculated over the trailing 1-year period	18.06%	13.02%	+5.04%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.84%	13.68%	+3.16%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	17.98%	12.68%	+5.30%