SDSI vs. MYCG

Last updated Jun 24, 2026

SDSI (American Century Short Duration Strategic Income ETF) and MYCG (State Street My2027 Corporate Bond ETF) are both exchange-traded funds - SDSI is a Short-Term Bond fund tracking the Bloomberg U.S. 1-3 Year Government/Credit Bond Index, while MYCG is a Corporate Bonds fund actively managed by State Street. SDSI is passively managed, while MYCG is actively managed. Over the past year, SDSI returned 4.84% vs 4.54% for MYCG. A 0.65 correlation means they provide meaningful diversification when combined. SDSI charges 0.33%/yr vs 0.15%/yr for MYCG.

Performance

SDSI vs. MYCG - 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 My2027 Corporate Bond ETF (MYCG). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, SDSI achieves a 1.35% return, which is significantly lower than MYCG's 1.46% return.

SDSI

• 1D: 0.07%
• 1M: 0.36%
• YTD: 1.35%
• 6M: 1.54%
• 1Y: 4.84%
• 3Y*: 5.85%
• 5Y*: —
• 10Y*: —

MYCG

• 1D: 0.00%
• 1M: 0.32%
• YTD: 1.46%
• 6M: 1.68%
• 1Y: 4.54%
• 3Y*: —
• 5Y*: —
• 10Y*: —

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

SDSI vs. MYCG - Yearly Performance Comparison

	2026 (YTD)	2025	2024
SDSI American Century Short Duration Strategic Income ETF	1.35%	6.54%	-0.22%
MYCG State Street My2027 Corporate Bond ETF	1.46%	5.85%	-0.23%

Correlation

The correlation between SDSI and MYCG is 0.63, 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	0.63
Correlation (All Time) Calculated using the full available price history since Sep 24, 2024	0.65

The correlation between SDSI and MYCG has been stable across timeframes, ranging from 0.63 to 0.65 - a consistent structural relationship.

Return for Risk

SDSI vs. MYCG — Risk / Return Rank

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

SDSI

SDSI Risk / Return Rank: 91
SDSI Sharpe Ratio Rank: 92
SDSI Sortino Ratio Rank: 94
SDSI Omega Ratio Rank: 93
SDSI Calmar Ratio Rank: 83
SDSI Martin Ratio Rank: 90

MYCG

MYCG Risk / Return Rank: 98
MYCG Sharpe Ratio Rank: 97
MYCG Sortino Ratio Rank: 98
MYCG Omega Ratio Rank: 98
MYCG Calmar Ratio Rank: 97
MYCG Martin Ratio Rank: 98

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. MYCG - 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 My2027 Corporate Bond ETF (MYCG). 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.

Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.

	SDSI	MYCG	Difference
Sharpe ratio: Return per unit of total volatility	3.03	4.66	-1.63
Sortino ratio: Return per unit of downside risk	4.58	8.61	-4.02
Omega ratio: Gain probability vs. loss probability	1.61	2.22	-0.61
Calmar ratio: Return relative to maximum drawdown	4.15	10.20	-6.05
Martin ratio: Return relative to average drawdown	19.56	49.04	-29.48

SDSI vs. MYCG - Sharpe Ratio Comparison

The current SDSI Sharpe Ratio is 3.03, which is lower than the MYCG Sharpe Ratio of 4.66. The chart below compares the historical Sharpe Ratios of SDSI and MYCG, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Drawdowns

SDSI vs. MYCG - Drawdown Comparison

The maximum SDSI drawdown since its inception was -1.29%, which is greater than MYCG's maximum drawdown of -0.86%. Use the drawdown chart below to compare losses from any high point for SDSI and MYCG.

Drawdown Indicators

	SDSI	MYCG	Difference
Max Drawdown Largest peak-to-trough decline	-1.29%	-0.86%	-0.43%
Max Drawdown (1Y) Largest decline over 1 year	-1.17%	-0.45%	-0.72%
Max Drawdown (3Y) Largest decline over 3 years	-1.29%	—	—
Current Drawdown Current decline from peak	-0.07%	-0.04%	-0.03%
Average Drawdown Average peak-to-trough decline	-0.24%	-0.14%	-0.10%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.25%	0.09%	+0.16%

Volatility

SDSI vs. MYCG - Volatility Comparison

American Century Short Duration Strategic Income ETF (SDSI) has a higher volatility of 0.49% compared to State Street My2027 Corporate Bond ETF (MYCG) at 0.22%. This indicates that SDSI's price experiences larger fluctuations and is considered to be riskier than MYCG based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	SDSI	MYCG	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.49%	0.22%	+0.27%
Volatility (6M) Calculated over the trailing 6-month period	1.20%	0.53%	+0.67%
Volatility (1Y) Calculated over the trailing 1-year period	1.61%	0.98%	+0.63%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	2.27%	1.48%	+0.79%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	2.27%	1.48%	+0.79%

SDSI vs. MYCG - Expense Ratio Comparison

SDSI has a 0.33% expense ratio, which is higher than MYCG's 0.15% expense ratio.

Dividends

SDSI vs. MYCG - Dividend Comparison

SDSI's dividend yield for the trailing twelve months is around 4.78%, more than MYCG's 4.29% yield.

Position	TTM	2025	2024	2023	2022
MYCG State Street My2027 Corporate Bond ETF	4.29%	4.28%	1.16%	0.00%	0.00%
SDSI American Century Short Duration Strategic Income ETF	4.78%	4.91%	5.49%	5.37%	0.98%

Frequently Asked Questions

Can I hold both SDSI and MYCG in my portfolio?

SDSI and MYCG have a correlation of 0.63, 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 MYCG?

SDSI has higher volatility (0.49%) compared to MYCG (0.22%). In terms of maximum drawdown, SDSI dropped -1.29% vs MYCG's -0.86%.

Which ETF is better, SDSI or MYCG?

On 1-year performance, SDSI leads with 4.84% vs 4.54% for MYCG. On fees, MYCG is cheaper at 0.15% per year. On volatility, MYCG has been the lower-risk option at 0.22%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, SDSI or MYCG?

Over the 1-year period, SDSI has performed better with a 4.84% return vs 4.54%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, SDSI or MYCG?

MYCG is cheaper with a 0.15% expense ratio, compared with 0.33% for SDSI.

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

SDSI has the higher dividend yield at 4.78%, compared with 4.29% for MYCG.

What is the main difference between SDSI and MYCG?

SDSI is categorized as Short-Term Bond, while MYCG is Corporate Bonds. They also come from different issuers: American Century and State Street. Their fees differ too: 0.33% for SDSI and 0.15% for MYCG.

Which has better risk-adjusted returns?

MYCG currently has the higher Sharpe Ratio (4.66 vs 3.02), 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.