SDSI vs. STOT

Last updated Jun 5, 2026

SDSI (American Century Short Duration Strategic Income ETF) and STOT (State Street DoubleLine Short Duration Total Return Tactical ETF) are both Short-Term Bond funds - SDSI tracks the Bloomberg U.S. 1-3 Year Government/Credit Bond Index while STOT tracks the Bloomberg U.S. Aggregate 1-3 Year Index. Both are passively managed. Over the past 3 years, SDSI returned 5.66%/yr vs 5.28%/yr for STOT. A 0.58 correlation means they provide meaningful diversification when combined. SDSI charges 0.33%/yr vs 0.45%/yr for STOT.

Performance

SDSI vs. STOT - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in American Century Short Duration Strategic Income ETF (SDSI) and State Street DoubleLine Short Duration Total Return Tactical ETF (STOT). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, SDSI achieves a 0.90% return, which is significantly lower than STOT's 1.05% return.

SDSI

• 1D: -0.32%
• 1M: -0.03%
• YTD: 0.90%
• 6M: 1.36%
• 1Y: 4.64%
• 3Y*: 5.66%
• 5Y*: —
• 10Y*: —

STOT

• 1D: 0.07%
• 1M: 0.20%
• YTD: 1.05%
• 6M: 1.37%
• 1Y: 4.15%
• 3Y*: 5.28%
• 5Y*: 2.82%
• 10Y*: 2.44%

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

SDSI vs. STOT - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022
SDSI American Century Short Duration Strategic Income ETF	0.90%	6.54%	5.63%	5.88%	2.05%
STOT State Street DoubleLine Short Duration Total Return Tactical ETF	1.05%	5.56%	5.26%	6.39%	1.46%

Correlation

The correlation between SDSI and STOT is 0.60, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.60
Correlation (3Y) Calculated over the trailing 3-year period	0.54
Correlation (All Time) Calculated using the full available price history since Oct 14, 2022	0.58

The correlation between SDSI and STOT has been stable across timeframes, ranging from 0.54 to 0.60 - a consistent structural relationship.

SDSI vs. STOT - Sectors Allocation Comparison

Sectors	SDSI	STOT
Communication Services	90.0%	100.0%
Industrials	7.5%	-
Healthcare	2.5%	-
Basic Materials	-	-
Consumer Cyclical	-	-
Consumer Defensive	-	-
Energy	-	-
Financial Services	-	-
Real Estate	-	-
Technology	-	-
Utilities	-	-

Return for Risk

SDSI vs. STOT — Risk / Return Rank

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

SDSI

SDSI Risk / Return Rank: 87
SDSI Sharpe Ratio Rank: 87
SDSI Sortino Ratio Rank: 91
SDSI Omega Ratio Rank: 89
SDSI Calmar Ratio Rank: 79
SDSI Martin Ratio Rank: 88

STOT

STOT Risk / Return Rank: 94
STOT Sharpe Ratio Rank: 95
STOT Sortino Ratio Rank: 97
STOT Omega Ratio Rank: 96
STOT Calmar Ratio Rank: 90
STOT Martin Ratio Rank: 93

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.

SDSI vs. STOT - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for American Century Short Duration Strategic Income ETF (SDSI) and State Street DoubleLine Short Duration Total Return Tactical ETF (STOT). 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.

	SDSI	STOT	Difference
Sharpe ratio: Return per unit of total volatility	2.83	3.78	-0.95
Sortino ratio: Return per unit of downside risk	4.22	5.87	-1.65
Omega ratio: Gain probability vs. loss probability	1.56	1.78	-0.22
Calmar ratio: Return relative to maximum drawdown	3.98	5.46	-1.48
Martin ratio: Return relative to average drawdown	18.71	23.85	-5.14
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

SDSI vs. STOT - Sharpe Ratio Comparison

The current SDSI Sharpe Ratio is 2.83, which is comparable to the STOT Sharpe Ratio of 3.78. The chart below compares the historical Sharpe Ratios of SDSI and STOT, 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

	SDSI	STOT	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.83	3.78	-0.95
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	1.64	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	1.11	—
Sharpe Ratio (All Time) Calculated using the full available price history	2.55	1.12	+1.43

Drawdowns

SDSI vs. STOT - Drawdown Comparison

The maximum SDSI drawdown since its inception was -1.29%, smaller than the maximum STOT drawdown of -6.07%. Use the drawdown chart below to compare losses from any high point for SDSI and STOT.

Drawdown Indicators

	SDSI	STOT	Difference
Max Drawdown Largest peak-to-trough decline	-1.29%	-6.07%	+4.78%
Max Drawdown (1Y) Largest decline over 1 year	-1.17%	-0.76%	-0.41%
Max Drawdown (3Y) Largest decline over 3 years	-1.29%	-0.76%	-0.53%
Max Drawdown (5Y) Largest decline over 5 years	—	-6.07%	—
Max Drawdown (10Y) Largest decline over 10 years	—	-6.07%	—
Current Drawdown Current decline from peak	-0.39%	0.00%	-0.39%
Average Drawdown Average peak-to-trough decline	-0.24%	-0.84%	+0.60%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.25%	0.18%	+0.07%

Volatility

SDSI vs. STOT - Volatility Comparison

American Century Short Duration Strategic Income ETF (SDSI) has a higher volatility of 0.52% compared to State Street DoubleLine Short Duration Total Return Tactical ETF (STOT) at 0.33%. This indicates that SDSI's price experiences larger fluctuations and is considered to be riskier than STOT based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	SDSI	STOT	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.52%	0.33%	+0.19%
Volatility (6M) Calculated over the trailing 6-month period	1.18%	0.84%	+0.34%
Volatility (1Y) Calculated over the trailing 1-year period	1.67%	1.11%	+0.56%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	2.28%	1.73%	+0.55%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	2.28%	2.20%	+0.08%

SDSI vs. STOT - Expense Ratio Comparison

SDSI has a 0.33% expense ratio, which is lower than STOT's 0.45% expense ratio.

Dividends

SDSI vs. STOT - Dividend Comparison

SDSI's dividend yield for the trailing twelve months is around 4.43%, which matches STOT's 4.41% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016
SDSI American Century Short Duration Strategic Income ETF	4.43%	4.91%	5.49%	5.37%	0.98%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
STOT State Street DoubleLine Short Duration Total Return Tactical ETF	4.41%	4.52%	5.10%	4.53%	2.54%	1.76%	1.66%	2.61%	2.50%	1.95%	2.08%

Frequently Asked Questions

Can I hold both SDSI and STOT in my portfolio?

SDSI and STOT have a correlation of 0.60, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, SDSI or STOT?

SDSI has higher volatility (0.52%) compared to STOT (0.33%). In terms of maximum drawdown, SDSI dropped -1.29% vs STOT's -6.07%.

Which ETF is better, SDSI or STOT?

On 3-year performance, SDSI leads with 5.66% vs 5.28% for STOT. On fees, SDSI is cheaper at 0.33% per year. On volatility, STOT has been the lower-risk option at 0.33%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, SDSI or STOT?

Over the 3-year period, SDSI has performed better with a 5.66% return vs 5.28%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, SDSI or STOT?

SDSI is cheaper with a 0.33% expense ratio, compared with 0.45% for STOT.

Which ETF pays a higher dividend yield, SDSI or STOT?

SDSI has the higher dividend yield at 4.43%, compared with 4.41% for STOT.

What is the main difference between SDSI and STOT?

SDSI tracks Bloomberg U.S. 1-3 Year Government/Credit Bond Index, while STOT tracks Bloomberg U.S. Aggregate 1-3 Year Index. They also come from different issuers: American Century and State Street. Their fees differ too: 0.33% for SDSI and 0.45% for STOT.

Which has better risk-adjusted returns?

STOT currently has the higher Sharpe Ratio (3.78 vs 2.83), 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.