DRSK vs. SDSI

Last updated Apr 2, 2026

Compare and contrast key facts about Aptus Defined Risk ETF (DRSK) and American Century Short Duration Strategic Income ETF (SDSI).

DRSK and SDSI are both exchange-traded funds (ETFs), meaning they are traded on stock exchanges and can be bought and sold throughout the day. DRSK is an actively managed fund by Aptus Capital Advisors. It was launched on Aug 8, 2018. SDSI is a passively managed fund by American Century that tracks the performance of the Bloomberg U.S. 1-3 Year Government/Credit Bond Index. It was launched on Oct 11, 2022.

Performance

DRSK vs. SDSI - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Aptus Defined Risk ETF (DRSK) and American Century Short Duration Strategic Income ETF (SDSI). The values are adjusted to include any dividend payments, if applicable.

DRSK vs. SDSI - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022
DRSK Aptus Defined Risk ETF	-3.09%	7.67%	12.50%	2.08%	2.47%
SDSI American Century Short Duration Strategic Income ETF	0.23%	6.54%	5.63%	5.88%	2.05%

Returns By Period

In the year-to-date period, DRSK achieves a -3.09% return, which is significantly lower than SDSI's 0.23% return.

DRSK

• 1D: 0.15%
• 1M: -2.43%
• YTD: -3.09%
• 6M: -5.22%
• 1Y: 3.51%
• 3Y*: 5.53%
• 5Y*: 1.76%
• 10Y*: —

SDSI

• 1D: -0.02%
• 1M: -0.65%
• YTD: 0.23%
• 6M: 1.47%
• 1Y: 4.92%
• 3Y*: 5.45%
• 5Y*: —
• 10Y*: —

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

DRSK vs. SDSI - Expense Ratio Comparison

DRSK has a 0.79% expense ratio, which is higher than SDSI's 0.33% expense ratio.

DRSK

Aptus Defined Risk ETF

SDSI

American Century Short Duration Strategic Income ETF

Return for Risk

DRSK vs. SDSI — Risk / Return Rank

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

DRSK

DRSK Risk / Return Rank: 23
DRSK Sharpe Ratio Rank: 24
DRSK Sortino Ratio Rank: 23
DRSK Omega Ratio Rank: 21
DRSK Calmar Ratio Rank: 24
DRSK Martin Ratio Rank: 22

SDSI

SDSI Risk / Return Rank: 93
SDSI Sharpe Ratio Rank: 89
SDSI Sortino Ratio Rank: 91
SDSI Omega Ratio Rank: 95
SDSI Calmar Ratio Rank: 94
SDSI Martin Ratio Rank: 95

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.

DRSK vs. SDSI - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Aptus Defined Risk ETF (DRSK) and American Century Short Duration Strategic Income ETF (SDSI). 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.

	DRSK	SDSI	Difference
Sharpe ratio Return per unit of total volatility	0.44	2.01	-1.57
Sortino ratio Return per unit of downside risk	0.70	2.77	-2.07
Omega ratio Gain probability vs. loss probability	1.08	1.48	-0.40
Calmar ratio Return relative to maximum drawdown	0.58	3.85	-3.27
Martin ratio Return relative to average drawdown	1.58	16.05	-14.47
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

DRSK vs. SDSI - Sharpe Ratio Comparison

The current DRSK Sharpe Ratio is 0.44, which is lower than the SDSI Sharpe Ratio of 2.01. The chart below compares the historical Sharpe Ratios of DRSK and SDSI, 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

	DRSK	SDSI	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.44	2.01	-1.57
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.25	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.69	2.56	-1.86

Correlation

The correlation between DRSK and SDSI is 0.53, which is considered to be moderate. This suggests that the two assets have some degree of positive relationship in their price movements. Moderate correlation can be acceptable for portfolio diversification, offering a balance between risk and potential returns.

Dividends

DRSK vs. SDSI - Dividend Comparison

DRSK's dividend yield for the trailing twelve months is around 3.88%, less than SDSI's 4.54% yield.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018
DRSK Aptus Defined Risk ETF	3.88%	3.67%	3.31%	3.57%	1.93%	2.64%	5.69%	3.04%	2.62%
SDSI American Century Short Duration Strategic Income ETF	4.54%	4.91%	5.49%	5.37%	0.98%	0.00%	0.00%	0.00%	0.00%

Drawdowns

DRSK vs. SDSI - Drawdown Comparison

The maximum DRSK drawdown since its inception was -19.87%, which is greater than SDSI's maximum drawdown of -1.29%. Use the drawdown chart below to compare losses from any high point for DRSK and SDSI.

Drawdown Indicators

	DRSK	SDSI	Difference
Max Drawdown Largest peak-to-trough decline	-19.87%	-1.29%	-18.58%
Max Drawdown (1Y) Largest decline over 1 year	-7.20%	-1.29%	-5.91%
Max Drawdown (5Y) Largest decline over 5 years	-19.87%	—	—
Current Drawdown Current decline from peak	-6.14%	-0.70%	-5.44%
Average Drawdown Average peak-to-trough decline	-4.26%	-0.25%	-4.01%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.66%	0.31%	+2.35%

Volatility

DRSK vs. SDSI - Volatility Comparison

Aptus Defined Risk ETF (DRSK) has a higher volatility of 1.76% compared to American Century Short Duration Strategic Income ETF (SDSI) at 0.79%. This indicates that DRSK's price experiences larger fluctuations and is considered to be riskier than SDSI based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	DRSK	SDSI	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.76%	0.79%	+0.97%
Volatility (6M) Calculated over the trailing 6-month period	5.46%	1.19%	+4.27%
Volatility (1Y) Calculated over the trailing 1-year period	8.08%	2.46%	+5.62%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	7.22%	2.31%	+4.91%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	7.00%	2.31%	+4.69%