LEWIX vs. WFSPX

Last updated Jun 23, 2026

LEWIX (BlackRock LifePath ESG Index 2065 Fund) and WFSPX (iShares S&P 500 Index Fund Class K) are both mutual funds - LEWIX is a Target Retirement Date fund managed by BlackRock, while WFSPX is a S&P 500 fund tracking the S&P 500 Index. Over the past 5 years, LEWIX returned 10.27%/yr vs 14.06%/yr for WFSPX. With a 0.95 correlation, they move nearly in lockstep. LEWIX charges 0.05%/yr vs 0.03%/yr for WFSPX.

Performance

LEWIX vs. WFSPX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in BlackRock LifePath ESG Index 2065 Fund (LEWIX) and iShares S&P 500 Index Fund Class K (WFSPX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, LEWIX achieves a 12.40% return, which is significantly higher than WFSPX's 10.17% return.

LEWIX

• 1D: 1.08%
• 1M: 1.80%
• YTD: 12.40%
• 6M: 12.17%
• 1Y: 28.75%
• 3Y*: 18.01%
• 5Y*: 10.27%
• 10Y*: —

WFSPX

• 1D: 1.09%
• 1M: 0.46%
• YTD: 10.17%
• 6M: 9.66%
• 1Y: 27.12%
• 3Y*: 20.94%
• 5Y*: 14.06%
• 10Y*: 15.46%

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

LEWIX vs. WFSPX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020
LEWIX BlackRock LifePath ESG Index 2065 Fund	12.40%	20.94%	12.84%	21.30%	-18.61%	19.97%	13.76%
WFSPX iShares S&P 500 Index Fund Class K	10.17%	17.83%	24.94%	26.25%	-18.14%	28.63%	11.72%

Correlation

The correlation between LEWIX and WFSPX is 0.95, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.95
Correlation (3Y) Calculated over the trailing 3-year period	0.94
Correlation (5Y) Calculated over the trailing 5-year period	0.95
Correlation (All Time) Calculated using the full available price history since Aug 18, 2020	0.95

The correlation between LEWIX and WFSPX has been stable across timeframes, ranging from 0.94 to 0.95 - a consistent structural relationship.

Return for Risk

LEWIX vs. WFSPX — Risk / Return Rank

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

LEWIX

LEWIX Risk / Return Rank: 64
LEWIX Sharpe Ratio Rank: 63
LEWIX Sortino Ratio Rank: 59
LEWIX Omega Ratio Rank: 59
LEWIX Calmar Ratio Rank: 64
LEWIX Martin Ratio Rank: 72

WFSPX

WFSPX Risk / Return Rank: 66
WFSPX Sharpe Ratio Rank: 64
WFSPX Sortino Ratio Rank: 58
WFSPX Omega Ratio Rank: 60
WFSPX Calmar Ratio Rank: 68
WFSPX Martin Ratio Rank: 79

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.

LEWIX vs. WFSPX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for BlackRock LifePath ESG Index 2065 Fund (LEWIX) and iShares S&P 500 Index Fund Class K (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.

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.

	LEWIX	WFSPX	Difference
Sharpe ratio: Return per unit of total volatility	2.15	2.16	-0.02
Sortino ratio: Return per unit of downside risk	2.94	2.92	+0.02
Omega ratio: Gain probability vs. loss probability	1.39	1.39	0.00
Calmar ratio: Return relative to maximum drawdown	2.94	3.03	-0.09
Martin ratio: Return relative to average drawdown	12.81	13.70	-0.89

LEWIX vs. WFSPX - Sharpe Ratio Comparison

The current LEWIX Sharpe Ratio is 2.15, which is comparable to the WFSPX Sharpe Ratio of 2.16. The chart below compares the historical Sharpe Ratios of LEWIX and WFSPX, 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

LEWIX vs. WFSPX - Drawdown Comparison

The maximum LEWIX drawdown since its inception was -27.20%, smaller than the maximum WFSPX drawdown of -58.21%. Use the drawdown chart below to compare losses from any high point for LEWIX and WFSPX.

Drawdown Indicators

	LEWIX	WFSPX	Difference
Max Drawdown Largest peak-to-trough decline	-27.20%	-58.21%	+31.01%
Max Drawdown (1Y) Largest decline over 1 year	-9.64%	-8.90%	-0.74%
Max Drawdown (3Y) Largest decline over 3 years	-17.79%	-18.74%	+0.95%
Max Drawdown (5Y) Largest decline over 5 years	-27.20%	-24.51%	-2.69%
Max Drawdown (10Y) Largest decline over 10 years	—	-33.74%	—
Current Drawdown Current decline from peak	-0.59%	-1.36%	+0.77%
Average Drawdown Average peak-to-trough decline	-5.71%	-12.76%	+7.05%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.21%	1.96%	+0.25%

Volatility

LEWIX vs. WFSPX - Volatility Comparison

BlackRock LifePath ESG Index 2065 Fund (LEWIX) has a higher volatility of 5.22% compared to iShares S&P 500 Index Fund Class K (WFSPX) at 4.77%. This indicates that LEWIX's price experiences larger fluctuations and is considered to be riskier than WFSPX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	LEWIX	WFSPX	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.22%	4.77%	+0.45%
Volatility (6M) Calculated over the trailing 6-month period	10.96%	9.90%	+1.06%
Volatility (1Y) Calculated over the trailing 1-year period	13.22%	12.46%	+0.76%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.11%	16.97%	-0.86%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	15.89%	18.07%	-2.18%

LEWIX vs. WFSPX - Expense Ratio Comparison

LEWIX has a 0.05% expense ratio, which is higher than WFSPX's 0.03% 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

LEWIX vs. WFSPX - Dividend Comparison

LEWIX's dividend yield for the trailing twelve months is around 1.54%, less than WFSPX's 1.59% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
LEWIX BlackRock LifePath ESG Index 2065 Fund	1.54%	1.73%	0.00%	2.55%	2.10%	2.77%	0.91%	0.00%	0.00%	0.00%	0.00%	0.00%
WFSPX iShares S&P 500 Index Fund Class K	1.59%	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 LEWIX and WFSPX in my portfolio?

With a correlation of 0.95, LEWIX and WFSPX 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, LEWIX or WFSPX?

LEWIX has higher volatility (5.22%) compared to WFSPX (4.77%). In terms of maximum drawdown, LEWIX dropped -27.20% vs WFSPX's -58.21%.

Which has better risk-adjusted returns?

WFSPX currently has the higher Sharpe Ratio (2.16 vs 2.15), 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.