GRISX vs. WFSPX
GRISX (Nationwide S&P 500 Index Fund) and WFSPX (iShares S&P 500 Index Fund) are both S&P 500 funds tracking the S&P 500 Index, from Nationwide and BlackRock respectively. Both are passively managed. Over the past 10 years, GRISX returned 15.27%/yr vs 15.54%/yr for WFSPX. With a 0.99 correlation, they move nearly in lockstep. GRISX charges 0.44%/yr vs 0.03%/yr for WFSPX.
Performance
GRISX vs. WFSPX - Performance Comparison
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Returns By Period
The year-to-date returns for both investments are quite close, with GRISX having a 11.55% return and WFSPX slightly higher at 11.69%. Both investments have delivered pretty close results over the past 10 years, with GRISX having a 15.27% annualized return and WFSPX not far ahead at 15.54%.
GRISX
- 1D
- 0.15%
- 1M
- 5.78%
- YTD
- 11.55%
- 6M
- 11.59%
- 1Y
- 28.56%
- 3Y*
- 22.08%
- 5Y*
- 13.73%
- 10Y*
- 15.27%
WFSPX
- 1D
- 0.13%
- 1M
- 5.80%
- YTD
- 11.69%
- 6M
- 11.72%
- 1Y
- 28.93%
- 3Y*
- 22.71%
- 5Y*
- 14.24%
- 10Y*
- 15.54%
GRISX vs. WFSPX - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
GRISX Nationwide S&P 500 Index Fund | 11.55% | 17.41% | 24.13% | 25.55% | -18.49% | 28.32% | 17.92% | 30.94% | -3.84% | 21.35% |
WFSPX iShares S&P 500 Index Fund | 11.69% | 17.83% | 24.94% | 26.25% | -18.14% | 28.63% | 18.43% | 31.45% | -4.83% | 21.27% |
Correlation
The correlation between GRISX and WFSPX is 1.00 - these two move nearly in lockstep. At this level, holding both provides almost no diversification benefit. If you already own one, adding the other does little to reduce portfolio risk.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 1.00 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.99 |
Correlation (5Y) Calculated over the trailing 5-year period | 1.00 |
Correlation (10Y) Calculated over the trailing 10-year period | 0.99 |
Correlation (All Time) Calculated using the full available price history since Jan 5, 1999 | 0.99 |
The correlation between GRISX and WFSPX has been stable across timeframes, ranging from 0.99 to 1.00 - a consistent structural relationship.
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Return for Risk
GRISX vs. WFSPX — Risk / Return Rank
GRISX
WFSPX
GRISX vs. WFSPX - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Nationwide S&P 500 Index Fund (GRISX) 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.
| GRISX | WFSPX | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | -0.04 | ||
| Sortino ratioReturn per unit of downside risk | -0.04 | ||
| Omega ratioGain probability vs. loss probability | 1.45 | 1.46 | -0.01 |
| Calmar ratioReturn relative to maximum drawdown | 3.29 | 3.35 | -0.06 |
| Martin ratioReturn relative to average drawdown | 15.35 | 15.65 | -0.30 |
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
| GRISX | WFSPX | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 2.48 | 2.52 | -0.04 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.82 | 0.85 | -0.03 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | 0.85 | 0.87 | -0.02 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.43 | 0.13 | +0.30 |
Drawdowns
GRISX vs. WFSPX - Drawdown Comparison
The maximum GRISX drawdown since its inception was -55.53%, roughly equal to the maximum WFSPX drawdown of -58.21%. Use the drawdown chart below to compare losses from any high point for GRISX and WFSPX.
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Drawdown Indicators
| GRISX | WFSPX | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -55.53% | -58.21% | +2.68% |
Max Drawdown (1Y)Largest decline over 1 year | -8.95% | -8.90% | -0.05% |
Max Drawdown (3Y)Largest decline over 3 years | -18.78% | -18.74% | -0.04% |
Max Drawdown (5Y)Largest decline over 5 years | -24.75% | -24.51% | -0.24% |
Max Drawdown (10Y)Largest decline over 10 years | -33.85% | -33.74% | -0.11% |
Current DrawdownCurrent decline from peak | 0.00% | 0.00% | 0.00% |
Average DrawdownAverage peak-to-trough decline | -10.86% | -12.77% | +1.91% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 1.91% | 1.90% | +0.01% |
Volatility
GRISX vs. WFSPX - Volatility Comparison
Nationwide S&P 500 Index Fund (GRISX) and iShares S&P 500 Index Fund (WFSPX) have volatilities of 2.83% and 2.82%, 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
| GRISX | WFSPX | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 2.83% | 2.82% | +0.01% |
Volatility (6M)Calculated over the trailing 6-month period | 8.98% | 8.97% | +0.01% |
Volatility (1Y)Calculated over the trailing 1-year period | 11.88% | 11.85% | +0.03% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 16.94% | 16.88% | +0.06% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 18.08% | 18.02% | +0.06% |
GRISX vs. WFSPX - Expense Ratio Comparison
GRISX has a 0.44% expense ratio, which is higher than WFSPX's 0.03% expense ratio.
Dividends
GRISX vs. WFSPX - Dividend Comparison
GRISX's dividend yield for the trailing twelve months is around 4.59%, more than WFSPX's 1.56% yield.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
GRISX Nationwide S&P 500 Index Fund | 4.59% | 5.08% | 2.62% | 0.79% | 1.67% | 4.96% | 1.27% | 6.26% | 18.54% | 6.66% | 7.42% | 11.98% |
WFSPX iShares S&P 500 Index Fund | 1.56% | 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
With a correlation of 1.00, GRISX 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.
GRISX has higher volatility (2.83%) compared to WFSPX (2.82%). In terms of maximum drawdown, GRISX dropped -55.53% vs WFSPX's -58.21%.
WFSPX currently has the higher Sharpe Ratio (2.52 vs 2.48), 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.
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