WFSPX vs. BDMIX

Last updated Jun 3, 2026

WFSPX (iShares S&P 500 Index Fund) and BDMIX (BlackRock Global Long/Short Equity Fund Class I) are both mutual funds - WFSPX is a S&P 500 fund tracking the S&P 500 Index, while BDMIX is a Long-Short fund managed by BlackRock. Over the past 10 years, WFSPX returned 15.53%/yr vs 8.35%/yr for BDMIX. At a 0.12 correlation, their price movements are largely independent. WFSPX charges 0.03%/yr vs 1.57%/yr for BDMIX.

Performance

WFSPX vs. BDMIX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in iShares S&P 500 Index Fund (WFSPX) and BlackRock Global Long/Short Equity Fund Class I (BDMIX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

The year-to-date returns for both investments are quite close, with WFSPX having a 11.54% return and BDMIX slightly higher at 12.00%. Over the past 10 years, WFSPX has outperformed BDMIX with an annualized return of 15.53%, while BDMIX has yielded a comparatively lower 8.35% annualized return.

WFSPX

• 1D: 0.27%
• 1M: 5.23%
• YTD: 11.54%
• 6M: 11.91%
• 1Y: 29.51%
• 3Y*: 22.66%
• 5Y*: 14.13%
• 10Y*: 15.53%

BDMIX

• 1D: 1.05%
• 1M: 4.48%
• YTD: 12.00%
• 6M: 15.02%
• 1Y: 21.11%
• 3Y*: 21.65%
• 5Y*: 12.84%
• 10Y*: 8.35%

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

WFSPX vs. BDMIX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
WFSPX iShares S&P 500 Index Fund	11.54%	17.83%	24.94%	26.25%	-18.14%	28.63%	18.43%	31.45%	-4.83%	21.27%
BDMIX BlackRock Global Long/Short Equity Fund Class I	12.00%	18.30%	21.39%	14.55%	1.80%	3.34%	0.29%	-0.85%	2.20%	12.85%

Correlation

The correlation between WFSPX and BDMIX is 0.34, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.34
Correlation (3Y) Calculated over the trailing 3-year period	0.21
Correlation (5Y) Calculated over the trailing 5-year period	0.13
Correlation (10Y) Calculated over the trailing 10-year period	0.08
Correlation (All Time) Calculated using the full available price history since Jan 3, 2013	0.12

Over the past year, WFSPX and BDMIX have become more correlated (0.34) than their long-term average of 0.12, meaning their price movements have been converging.

Return for Risk

WFSPX vs. BDMIX — Risk / Return Rank

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

WFSPX

WFSPX Risk / Return Rank: 74
WFSPX Sharpe Ratio Rank: 77
WFSPX Sortino Ratio Rank: 69
WFSPX Omega Ratio Rank: 69
WFSPX Calmar Ratio Rank: 74
WFSPX Martin Ratio Rank: 83

BDMIX

BDMIX Risk / Return Rank: 91
BDMIX Sharpe Ratio Rank: 94
BDMIX Sortino Ratio Rank: 93
BDMIX Omega Ratio Rank: 87
BDMIX Calmar Ratio Rank: 95
BDMIX Martin Ratio Rank: 87

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. BDMIX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares S&P 500 Index Fund (WFSPX) and BlackRock Global Long/Short Equity Fund Class I (BDMIX). 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	BDMIX	Difference
Sharpe ratio Return per unit of total volatility	2.55	3.19	-0.65
Sortino ratio Return per unit of downside risk	3.46	4.77	-1.31
Omega ratio Gain probability vs. loss probability	1.46	1.61	-0.14
Calmar ratio Return relative to maximum drawdown	3.38	5.97	-2.60
Martin ratio Return relative to average drawdown	15.81	17.10	-1.29
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. BDMIX - Sharpe Ratio Comparison

The current WFSPX Sharpe Ratio is 2.55, which is comparable to the BDMIX Sharpe Ratio of 3.19. The chart below compares the historical Sharpe Ratios of WFSPX and BDMIX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Sharpe Ratios by Period

	WFSPX	BDMIX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.55	3.19	-0.65
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.84	1.98	-1.14
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.86	1.44	-0.58
Sharpe Ratio (All Time) Calculated using the full available price history	0.13	1.23	-1.10

Drawdowns

WFSPX vs. BDMIX - Drawdown Comparison

The maximum WFSPX drawdown since its inception was -58.21%, which is greater than BDMIX's maximum drawdown of -11.89%. Use the drawdown chart below to compare losses from any high point for WFSPX and BDMIX.

Drawdown Indicators

	WFSPX	BDMIX	Difference
Max Drawdown Largest peak-to-trough decline	-58.21%	-11.89%	-46.32%
Max Drawdown (1Y) Largest decline over 1 year	-8.90%	-3.54%	-5.36%
Max Drawdown (3Y) Largest decline over 3 years	-18.74%	-4.07%	-14.67%
Max Drawdown (5Y) Largest decline over 5 years	-24.51%	-6.15%	-18.36%
Max Drawdown (10Y) Largest decline over 10 years	-33.74%	-9.44%	-24.30%
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-12.78%	-2.68%	-10.10%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.90%	1.26%	+0.64%

Volatility

WFSPX vs. BDMIX - Volatility Comparison

iShares S&P 500 Index Fund (WFSPX) has a higher volatility of 2.82% compared to BlackRock Global Long/Short Equity Fund Class I (BDMIX) at 1.96%. This indicates that WFSPX's price experiences larger fluctuations and is considered to be riskier than BDMIX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	WFSPX	BDMIX	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.82%	1.96%	+0.86%
Volatility (6M) Calculated over the trailing 6-month period	8.98%	4.46%	+4.52%
Volatility (1Y) Calculated over the trailing 1-year period	11.88%	6.83%	+5.05%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.88%	6.52%	+10.36%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.02%	5.81%	+12.21%

WFSPX vs. BDMIX - Expense Ratio Comparison

WFSPX has a 0.03% expense ratio, which is lower than BDMIX's 1.57% expense ratio.

Dividends

WFSPX vs. BDMIX - Dividend Comparison

WFSPX's dividend yield for the trailing twelve months is around 1.57%, less than BDMIX's 7.98% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BDMIX BlackRock Global Long/Short Equity Fund Class I	7.98%	8.94%	13.26%	7.42%	0.00%	1.23%	0.30%	6.78%	0.94%	0.00%	0.00%	1.86%
WFSPX iShares S&P 500 Index Fund	1.57%	1.72%	1.41%	1.50%	2.02%	1.82%	1.66%	1.99%	2.00%	1.62%	2.37%	2.49%

Frequently Asked Questions

Can I hold both WFSPX and BDMIX in my portfolio?

WFSPX and BDMIX have a correlation of 0.34, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, WFSPX or BDMIX?

WFSPX has higher volatility (2.82%) compared to BDMIX (1.96%). In terms of maximum drawdown, WFSPX dropped -58.21% vs BDMIX's -11.89%.

Which has better risk-adjusted returns?

BDMIX currently has the higher Sharpe Ratio (3.19 vs 2.55), 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.