STDAX vs. SEATX

Last updated Jun 4, 2026

STDAX (SEI Asset Allocation Trust Defensive Strategy Allocation Fund) and SEATX (SEI Tax Exempt Trust Tax-Advantaged Income Fund) are both mutual funds - STDAX is a Diversified Portfolio fund managed by SEI, while SEATX is a Intermediate Core-Plus Bond fund managed by SEI. Over the past 10 years, STDAX returned 2.40%/yr vs 2.79%/yr for SEATX. At a 0.19 correlation, their price movements are largely independent. STDAX charges 0.35%/yr vs 0.86%/yr for SEATX.

Performance

STDAX vs. SEATX - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in SEI Asset Allocation Trust Defensive Strategy Allocation Fund (STDAX) and SEI Tax Exempt Trust Tax-Advantaged Income Fund (SEATX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, STDAX achieves a 1.30% return, which is significantly lower than SEATX's 2.21% return. Over the past 10 years, STDAX has underperformed SEATX with an annualized return of 2.40%, while SEATX has yielded a comparatively higher 2.79% annualized return.

STDAX

• 1D: 0.00%
• 1M: 0.36%
• YTD: 1.30%
• 6M: 1.61%
• 1Y: 3.99%
• 3Y*: 4.49%
• 5Y*: 2.89%
• 10Y*: 2.40%

SEATX

• 1D: 0.11%
• 1M: 0.70%
• YTD: 2.21%
• 6M: 2.31%
• 1Y: 5.40%
• 3Y*: 4.68%
• 5Y*: 0.48%
• 10Y*: 2.79%

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

STDAX vs. SEATX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
STDAX SEI Asset Allocation Trust Defensive Strategy Allocation Fund	1.30%	4.46%	5.35%	4.45%	-1.58%	1.56%	-19.54%	19.83%	-3.32%	9.70%
SEATX SEI Tax Exempt Trust Tax-Advantaged Income Fund	2.21%	2.12%	5.75%	5.57%	-13.10%	4.00%	6.20%	10.58%	0.56%	8.54%

Correlation

The correlation between STDAX and SEATX is 0.27, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.27
Correlation (3Y) Calculated over the trailing 3-year period	0.30
Correlation (5Y) Calculated over the trailing 5-year period	0.37
Correlation (10Y) Calculated over the trailing 10-year period	0.22
Correlation (All Time) Calculated using the full available price history since Jan 3, 2008	0.19

The correlation between STDAX and SEATX shifts across timeframes, from 0.19 (all time) to 0.37 (5 years), reflecting how their relationship changes across market environments.

Return for Risk

STDAX vs. SEATX — Risk / Return Rank

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

STDAX

STDAX Risk / Return Rank: 99
STDAX Sharpe Ratio Rank: 99
STDAX Sortino Ratio Rank: 99
STDAX Omega Ratio Rank: 99
STDAX Calmar Ratio Rank: 99
STDAX Martin Ratio Rank: 99

SEATX

SEATX Risk / Return Rank: 39
SEATX Sharpe Ratio Rank: 38
SEATX Sortino Ratio Rank: 48
SEATX Omega Ratio Rank: 53
SEATX Calmar Ratio Rank: 26
SEATX Martin Ratio Rank: 31

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.

STDAX vs. SEATX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for SEI Asset Allocation Trust Defensive Strategy Allocation Fund (STDAX) and SEI Tax Exempt Trust Tax-Advantaged Income Fund (SEATX). 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.

	STDAX	SEATX	Difference
Sharpe ratio: Return per unit of total volatility	4.78	1.80	+2.98
Sortino ratio: Return per unit of downside risk	8.56	2.91	+5.65
Omega ratio: Gain probability vs. loss probability	2.74	1.40	+1.34
Calmar ratio: Return relative to maximum drawdown	11.47	1.91	+9.56
Martin ratio: Return relative to average drawdown	48.94	7.08	+41.86
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

STDAX vs. SEATX - Sharpe Ratio Comparison

The current STDAX Sharpe Ratio is 4.78, which is higher than the SEATX Sharpe Ratio of 1.80. The chart below compares the historical Sharpe Ratios of STDAX and SEATX, 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

	STDAX	SEATX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	4.78	1.80	+2.98
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	1.48	0.11	+1.37
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.36	0.61	-0.25
Sharpe Ratio (All Time) Calculated using the full available price history	0.00	0.84	-0.84

Drawdowns

STDAX vs. SEATX - Drawdown Comparison

The maximum STDAX drawdown since its inception was -76.81%, which is greater than SEATX's maximum drawdown of -28.46%. Use the drawdown chart below to compare losses from any high point for STDAX and SEATX.

Drawdown Indicators

	STDAX	SEATX	Difference
Max Drawdown Largest peak-to-trough decline	-76.81%	-28.46%	-48.35%
Max Drawdown (1Y) Largest decline over 1 year	-0.36%	-2.84%	+2.48%
Max Drawdown (3Y) Largest decline over 3 years	-1.68%	-6.80%	+5.12%
Max Drawdown (5Y) Largest decline over 5 years	-2.91%	-17.71%	+14.80%
Max Drawdown (10Y) Largest decline over 10 years	-26.89%	-17.71%	-9.18%
Current Drawdown Current decline from peak	-8.71%	0.00%	-8.71%
Average Drawdown Average peak-to-trough decline	-31.77%	-3.49%	-28.28%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.08%	0.76%	-0.68%

Volatility

STDAX vs. SEATX - Volatility Comparison

The current volatility for SEI Asset Allocation Trust Defensive Strategy Allocation Fund (STDAX) is 0.34%, while SEI Tax Exempt Trust Tax-Advantaged Income Fund (SEATX) has a volatility of 1.14%. This indicates that STDAX experiences smaller price fluctuations and is considered to be less risky than SEATX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	STDAX	SEATX	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.34%	1.14%	-0.80%
Volatility (6M) Calculated over the trailing 6-month period	0.68%	2.28%	-1.60%
Volatility (1Y) Calculated over the trailing 1-year period	0.86%	3.04%	-2.18%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	1.96%	4.28%	-2.32%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	6.64%	4.56%	+2.08%

STDAX vs. SEATX - Expense Ratio Comparison

STDAX has a 0.35% expense ratio, which is lower than SEATX's 0.86% expense ratio.

Dividends

STDAX vs. SEATX - Dividend Comparison

STDAX's dividend yield for the trailing twelve months is around 4.56%, less than SEATX's 4.68% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
SEATX SEI Tax Exempt Trust Tax-Advantaged Income Fund	4.68%	4.52%	4.63%	3.38%	3.16%	3.37%	4.28%	5.63%	4.76%	4.65%	4.10%	4.25%
STDAX SEI Asset Allocation Trust Defensive Strategy Allocation Fund	4.56%	4.49%	4.97%	4.77%	3.54%	0.87%	1.71%	5.19%	8.53%	6.92%	10.19%	3.84%

Frequently Asked Questions

Can I hold both STDAX and SEATX in my portfolio?

STDAX and SEATX have a correlation of 0.27, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, STDAX or SEATX?

SEATX has higher volatility (1.14%) compared to STDAX (0.34%). In terms of maximum drawdown, STDAX dropped -76.81% vs SEATX's -28.46%.

Which has better risk-adjusted returns?

STDAX currently has the higher Sharpe Ratio (4.78 vs 1.80), 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.