SECPX vs. SPINX

Last updated Jun 5, 2026

SECPX (SEI Daily Income Ultra Short Duration Bond Fund) and SPINX (SEI Institutional Investments Trust S&P 500 Index Fund) are both mutual funds - SECPX is a Ultrashort Bond fund managed by SEI, while SPINX is a S&P 500 fund tracking the S&P 500 Index. Over the past 10 years, SECPX returned 2.32%/yr vs 15.42%/yr for SPINX. At a correlation of -0.01, they often move in opposite directions. SECPX charges 0.38%/yr vs 0.12%/yr for SPINX.

Performance

SECPX vs. SPINX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in SEI Daily Income Ultra Short Duration Bond Fund (SECPX) and SEI Institutional Investments Trust S&P 500 Index Fund (SPINX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, SECPX achieves a 1.10% return, which is significantly lower than SPINX's 10.83% return. Over the past 10 years, SECPX has underperformed SPINX with an annualized return of 2.32%, while SPINX has yielded a comparatively higher 15.42% annualized return.

SECPX

• 1D: -0.11%
• 1M: 0.22%
• YTD: 1.10%
• 6M: 1.55%
• 1Y: 3.92%
• 3Y*: 4.54%
• 5Y*: 2.81%
• 10Y*: 2.32%

SPINX

• 1D: -0.77%
• 1M: 4.15%
• YTD: 10.83%
• 6M: 10.84%
• 1Y: 28.05%
• 3Y*: 22.11%
• 5Y*: 13.67%
• 10Y*: 15.42%

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

SECPX vs. SPINX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
SECPX SEI Daily Income Ultra Short Duration Bond Fund	1.10%	4.76%	4.68%	5.07%	-1.22%	-0.06%	1.84%	3.23%	1.72%	1.67%
SPINX SEI Institutional Investments Trust S&P 500 Index Fund	10.83%	17.89%	24.02%	26.24%	-18.27%	28.62%	18.35%	31.42%	-4.46%	21.74%

Correlation

The correlation between SECPX and SPINX is 0.08, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.08
Correlation (3Y) Calculated over the trailing 3-year period	0.06
Correlation (5Y) Calculated over the trailing 5-year period	0.04
Correlation (10Y) Calculated over the trailing 10-year period	0.00
Correlation (All Time) Calculated using the full available price history since Dec 20, 2013	-0.01

Return for Risk

SECPX vs. SPINX — Risk / Return Rank

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

SECPX

SECPX Risk / Return Rank: 96
SECPX Sharpe Ratio Rank: 88
SECPX Sortino Ratio Rank: 98
SECPX Omega Ratio Rank: 98
SECPX Calmar Ratio Rank: 98
SECPX Martin Ratio Rank: 98

SPINX

SPINX Risk / Return Rank: 67
SPINX Sharpe Ratio Rank: 66
SPINX Sortino Ratio Rank: 60
SPINX Omega Ratio Rank: 61
SPINX Calmar Ratio Rank: 69
SPINX Martin Ratio Rank: 80

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.

SECPX vs. SPINX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for SEI Daily Income Ultra Short Duration Bond Fund (SECPX) and SEI Institutional Investments Trust S&P 500 Index Fund (SPINX). 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.

	SECPX	SPINX	Difference
Sharpe ratio: Return per unit of total volatility	2.86	2.37	+0.49
Sortino ratio: Return per unit of downside risk	7.30	3.23	+4.07
Omega ratio: Gain probability vs. loss probability	2.43	1.43	+1.00
Calmar ratio: Return relative to maximum drawdown	7.60	3.16	+4.44
Martin ratio: Return relative to average drawdown	34.66	14.78	+19.88
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

SECPX vs. SPINX - Sharpe Ratio Comparison

The current SECPX Sharpe Ratio is 2.86, which is comparable to the SPINX Sharpe Ratio of 2.37. The chart below compares the historical Sharpe Ratios of SECPX and SPINX, 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

	SECPX	SPINX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.86	2.37	+0.49
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	2.09	0.61	+1.47
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	1.86	0.74	+1.12
Sharpe Ratio (All Time) Calculated using the full available price history	1.10	0.71	+0.38

Drawdowns

SECPX vs. SPINX - Drawdown Comparison

The maximum SECPX drawdown since its inception was -11.64%, smaller than the maximum SPINX drawdown of -33.82%. Use the drawdown chart below to compare losses from any high point for SECPX and SPINX.

Drawdown Indicators

	SECPX	SPINX	Difference
Max Drawdown Largest peak-to-trough decline	-11.64%	-33.82%	+22.18%
Max Drawdown (1Y) Largest decline over 1 year	-0.53%	-8.92%	+8.39%
Max Drawdown (3Y) Largest decline over 3 years	-0.53%	-32.91%	+32.38%
Max Drawdown (5Y) Largest decline over 5 years	-2.64%	-32.91%	+30.27%
Max Drawdown (10Y) Largest decline over 10 years	-4.47%	-33.82%	+29.35%
Current Drawdown Current decline from peak	-0.11%	-0.77%	+0.66%
Average Drawdown Average peak-to-trough decline	-0.54%	-5.21%	+4.67%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.12%	1.90%	-1.78%

Volatility

SECPX vs. SPINX - Volatility Comparison

The current volatility for SEI Daily Income Ultra Short Duration Bond Fund (SECPX) is 0.41%, while SEI Institutional Investments Trust S&P 500 Index Fund (SPINX) has a volatility of 2.94%. This indicates that SECPX experiences smaller price fluctuations and is considered to be less risky than SPINX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	SECPX	SPINX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.41%	2.94%	-2.53%
Volatility (6M) Calculated over the trailing 6-month period	1.00%	8.99%	-7.99%
Volatility (1Y) Calculated over the trailing 1-year period	1.42%	11.89%	-10.47%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	1.35%	22.49%	-21.14%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	1.25%	20.95%	-19.70%

SECPX vs. SPINX - Expense Ratio Comparison

SECPX has a 0.38% expense ratio, which is higher than SPINX's 0.12% expense ratio.

Dividends

SECPX vs. SPINX - Dividend Comparison

SECPX's dividend yield for the trailing twelve months is around 4.07%, less than SPINX's 10.75% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
SECPX SEI Daily Income Ultra Short Duration Bond Fund	4.07%	4.21%	3.80%	3.17%	1.05%	0.58%	1.49%	2.53%	2.14%	1.44%	1.00%	1.59%
SPINX SEI Institutional Investments Trust S&P 500 Index Fund	10.75%	11.90%	26.02%	9.77%	9.59%	6.58%	3.58%	3.01%	4.94%	2.32%	1.97%	2.29%

Frequently Asked Questions

Can I hold both SECPX and SPINX in my portfolio?

SECPX and SPINX have a correlation of 0.08, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, SECPX or SPINX?

SPINX has higher volatility (2.94%) compared to SECPX (0.41%). In terms of maximum drawdown, SECPX dropped -11.64% vs SPINX's -33.82%.

Which has better risk-adjusted returns?

SECPX currently has the higher Sharpe Ratio (2.86 vs 2.37), 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.