SPFIX vs. WFSPX
Compare and contrast key facts about Shelton Capital Management S&P 500 Index Fund (SPFIX) and iShares S&P 500 Index Fund (WFSPX).
SPFIX is a passively managed fund by BlackRock that tracks the performance of the S&P 500 Index. It was launched on Apr 20, 1992. 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. Both SPFIX and WFSPX are passive ETFs, meaning that they are not actively managed but aim to replicate the performance of the underlying index as closely as possible.
Performance
SPFIX vs. WFSPX - Performance Comparison
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SPFIX vs. WFSPX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
SPFIX Shelton Capital Management S&P 500 Index Fund | -7.11% | 17.23% | 42.83% | 25.48% | -18.22% | 27.99% | 17.41% | 41.64% | -4.68% | 21.55% |
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% |
Returns By Period
The year-to-date returns for both investments are quite close, with SPFIX having a -7.11% return and WFSPX slightly higher at -7.06%. Over the past 10 years, SPFIX has outperformed WFSPX with an annualized return of 15.75%, while WFSPX has yielded a comparatively lower 13.63% annualized return.
SPFIX
- 1D
- -0.37%
- 1M
- -7.67%
- YTD
- -7.11%
- 6M
- -4.66%
- 1Y
- 14.10%
- 3Y*
- 22.03%
- 5Y*
- 14.01%
- 10Y*
- 15.75%
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%
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SPFIX vs. WFSPX - Expense Ratio Comparison
SPFIX has a 0.43% expense ratio, which is higher than WFSPX's 0.03% expense ratio.
Return for Risk
SPFIX vs. WFSPX — Risk / Return Rank
SPFIX
WFSPX
SPFIX vs. WFSPX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Shelton Capital Management S&P 500 Index Fund (SPFIX) 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.
| SPFIX | WFSPX | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.81 | 0.84 | -0.03 |
Sortino ratioReturn per unit of downside risk | 1.26 | 1.30 | -0.04 |
Omega ratioGain probability vs. loss probability | 1.19 | 1.20 | -0.01 |
Calmar ratioReturn relative to maximum drawdown | 1.01 | 1.06 | -0.04 |
Martin ratioReturn relative to average drawdown | 4.90 | 5.13 | -0.23 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
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Sharpe Ratios by Period
| SPFIX | WFSPX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.81 | 0.84 | -0.03 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.77 | 0.68 | +0.10 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.84 | 0.76 | +0.08 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.56 | 0.13 | +0.43 |
Correlation
The correlation between SPFIX and WFSPX is 0.99, which is considered to be high. That indicates a strong positive relationship between their price movements. Having highly-correlated positions in a portfolio may signal a lack of diversification, potentially leading to increased risk during market downturns.
Dividends
SPFIX vs. WFSPX - Dividend Comparison
SPFIX's dividend yield for the trailing twelve months is around 3.68%, more than WFSPX's 1.58% yield.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
SPFIX Shelton Capital Management S&P 500 Index Fund | 3.68% | 3.45% | 27.20% | 8.08% | 5.07% | 5.43% | 8.06% | 16.60% | 2.49% | 3.01% | 2.92% | 4.35% |
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% |
Drawdowns
SPFIX vs. WFSPX - Drawdown Comparison
The maximum SPFIX drawdown since its inception was -54.81%, smaller than the maximum WFSPX drawdown of -58.21%. Use the drawdown chart below to compare losses from any high point for SPFIX and WFSPX.
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Drawdown Indicators
| SPFIX | WFSPX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -54.81% | -58.21% | +3.40% |
Max Drawdown (1Y)Largest decline over 1 year | -12.11% | -12.11% | 0.00% |
Max Drawdown (5Y)Largest decline over 5 years | -24.69% | -24.51% | -0.18% |
Max Drawdown (10Y)Largest decline over 10 years | -33.83% | -33.74% | -0.09% |
Current DrawdownCurrent decline from peak | -8.90% | -8.90% | 0.00% |
Average DrawdownAverage peak-to-trough decline | -8.99% | -12.84% | +3.85% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 2.50% | 2.49% | +0.01% |
Volatility
SPFIX vs. WFSPX - Volatility Comparison
Shelton Capital Management S&P 500 Index Fund (SPFIX) and iShares S&P 500 Index Fund (WFSPX) have volatilities of 4.22% and 4.24%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| SPFIX | WFSPX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 4.22% | 4.24% | -0.02% |
Volatility (6M)Calculated over the trailing 6-month period | 9.04% | 9.08% | -0.04% |
Volatility (1Y)Calculated over the trailing 1-year period | 18.09% | 18.06% | +0.03% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 18.19% | 16.84% | +1.35% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 18.84% | 17.98% | +0.86% |