SSPIX vs. GRISX

Last updated Apr 2, 2026

Compare and contrast key facts about SEI Institutional Managed Trust S&P 500 Index Fund (SSPIX) and Nationwide S&P 500 Index Fund (GRISX).

SSPIX is a passively managed fund by BlackRock that tracks the performance of the S&P 500 Index. It was launched on Feb 28, 1996. GRISX is a passively managed fund by Nationwide that tracks the performance of the S&P 500 Index. It was launched on Nov 2, 1998. Both SSPIX and GRISX 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

SSPIX vs. GRISX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in SEI Institutional Managed Trust S&P 500 Index Fund (SSPIX) and Nationwide S&P 500 Index Fund (GRISX). The values are adjusted to include any dividend payments, if applicable.

SSPIX vs. GRISX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
SSPIX SEI Institutional Managed Trust S&P 500 Index Fund	-4.43%	17.44%	24.60%	26.00%	-18.52%	28.56%	18.13%	31.25%	-4.61%	20.83%
GRISX Nationwide S&P 500 Index Fund	-4.41%	17.41%	24.13%	25.55%	-18.49%	28.32%	17.92%	30.94%	-3.84%	21.35%

Returns By Period

The year-to-date returns for both investments are quite close, with SSPIX having a -4.43% return and GRISX slightly higher at -4.41%. Over a longer period, both investments have demonstrated similar performance, with their 10-year annualized returns being quite close: SSPIX at 13.69% and GRISX at 13.69%.

SSPIX

• 1D: 2.93%
• 1M: -5.04%
• YTD: -4.43%
• 6M: -2.38%
• 1Y: 16.90%
• 3Y*: 17.93%
• 5Y*: 11.44%
• 10Y*: 13.69%

GRISX

• 1D: 2.95%
• 1M: -5.03%
• YTD: -4.41%
• 6M: -2.28%
• 1Y: 16.97%
• 3Y*: 17.65%
• 5Y*: 11.26%
• 10Y*: 13.69%

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

SSPIX vs. GRISX - Expense Ratio Comparison

SSPIX has a 0.25% expense ratio, which is lower than GRISX's 0.44% expense ratio.

GRISX

Nationwide S&P 500 Index Fund

SSPIX

SEI Institutional Managed Trust S&P 500 Index Fund

Return for Risk

SSPIX vs. GRISX — Risk / Return Rank

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

SSPIX

SSPIX Risk / Return Rank: 55
SSPIX Sharpe Ratio Rank: 44
SSPIX Sortino Ratio Rank: 48
SSPIX Omega Ratio Rank: 52
SSPIX Calmar Ratio Rank: 59
SSPIX Martin Ratio Rank: 71

GRISX

GRISX Risk / Return Rank: 55
GRISX Sharpe Ratio Rank: 45
GRISX Sortino Ratio Rank: 49
GRISX Omega Ratio Rank: 52
GRISX Calmar Ratio Rank: 59
GRISX Martin Ratio Rank: 71

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.

SSPIX vs. GRISX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for SEI Institutional Managed Trust S&P 500 Index Fund (SSPIX) and Nationwide S&P 500 Index Fund (GRISX). 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.

	SSPIX	GRISX	Difference
Sharpe ratio Return per unit of total volatility	0.95	0.96	0.00
Sortino ratio Return per unit of downside risk	1.46	1.47	-0.01
Omega ratio Gain probability vs. loss probability	1.22	1.22	0.00
Calmar ratio Return relative to maximum drawdown	1.48	1.49	-0.01
Martin ratio Return relative to average drawdown	7.08	7.12	-0.05
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

SSPIX vs. GRISX - Sharpe Ratio Comparison

The current SSPIX Sharpe Ratio is 0.95, which is comparable to the GRISX Sharpe Ratio of 0.96. The chart below compares the historical Sharpe Ratios of SSPIX and GRISX, 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

	SSPIX	GRISX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.95	0.96	0.00
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.62	0.67	-0.04
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.73	0.76	-0.03
Sharpe Ratio (All Time) Calculated using the full available price history	0.48	0.40	+0.07

Correlation

The correlation between SSPIX and GRISX is 1.00, 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

SSPIX vs. GRISX - Dividend Comparison

SSPIX's dividend yield for the trailing twelve months is around 9.32%, more than GRISX's 5.35% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
SSPIX SEI Institutional Managed Trust S&P 500 Index Fund	9.32%	8.91%	12.73%	4.51%	10.84%	7.47%	6.18%	4.46%	4.37%	1.96%	4.62%	1.77%
GRISX Nationwide S&P 500 Index Fund	5.35%	5.08%	2.62%	0.79%	1.67%	4.96%	1.27%	6.26%	18.54%	6.66%	7.42%	11.98%

Drawdowns

SSPIX vs. GRISX - Drawdown Comparison

The maximum SSPIX drawdown since its inception was -55.66%, roughly equal to the maximum GRISX drawdown of -55.53%. Use the drawdown chart below to compare losses from any high point for SSPIX and GRISX.

Drawdown Indicators

	SSPIX	GRISX	Difference
Max Drawdown Largest peak-to-trough decline	-55.66%	-55.53%	-0.13%
Max Drawdown (1Y) Largest decline over 1 year	-12.14%	-12.11%	-0.03%
Max Drawdown (5Y) Largest decline over 5 years	-25.65%	-24.75%	-0.90%
Max Drawdown (10Y) Largest decline over 10 years	-33.82%	-33.85%	+0.03%
Current Drawdown Current decline from peak	-6.30%	-6.27%	-0.03%
Average Drawdown Average peak-to-trough decline	-10.56%	-10.92%	+0.36%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.54%	2.53%	+0.01%

Volatility

SSPIX vs. GRISX - Volatility Comparison

SEI Institutional Managed Trust S&P 500 Index Fund (SSPIX) and Nationwide S&P 500 Index Fund (GRISX) have volatilities of 5.34% and 5.34%, 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.

Volatility by Period

	SSPIX	GRISX	Difference
Volatility (1M) Calculated over the trailing 1-month period	5.34%	5.34%	0.00%
Volatility (6M) Calculated over the trailing 6-month period	9.55%	9.54%	+0.01%
Volatility (1Y) Calculated over the trailing 1-year period	18.33%	18.31%	+0.02%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	18.47%	16.95%	+1.52%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.87%	18.06%	+0.81%