MYCG vs. SDSI

Last updated Jun 24, 2026

MYCG (State Street My2027 Corporate Bond ETF) and SDSI (American Century Short Duration Strategic Income ETF) are both exchange-traded funds - MYCG is a Corporate Bonds fund actively managed by State Street, while SDSI is a Short-Term Bond fund tracking the Bloomberg U.S. 1-3 Year Government/Credit Bond Index. MYCG is actively managed, while SDSI is passively managed. Over the past year, MYCG returned 4.43% vs 4.84% for SDSI. A 0.65 correlation means they provide meaningful diversification when combined. MYCG charges 0.15%/yr vs 0.33%/yr for SDSI.

Performance

MYCG vs. SDSI - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in State Street My2027 Corporate Bond ETF (MYCG) and American Century Short Duration Strategic Income ETF (SDSI). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, MYCG achieves a 1.50% return, which is significantly higher than SDSI's 1.35% return.

MYCG

• 1D: 0.04%
• 1M: 0.36%
• YTD: 1.50%
• 6M: 1.72%
• 1Y: 4.43%
• 3Y*: —
• 5Y*: —
• 10Y*: —

SDSI

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

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

MYCG vs. SDSI - Yearly Performance Comparison

	2026 (YTD)	2025	2024
MYCG State Street My2027 Corporate Bond ETF	1.50%	5.85%	-0.23%
SDSI American Century Short Duration Strategic Income ETF	1.35%	6.54%	-0.22%

Correlation

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

Return for Risk

MYCG vs. SDSI — Risk / Return Rank

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

MYCG

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

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

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.

MYCG vs. SDSI - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for State Street My2027 Corporate Bond ETF (MYCG) 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.

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.

	MYCG	SDSI	Difference
Sharpe ratio: Return per unit of total volatility	4.58	3.03	+1.56
Sortino ratio: Return per unit of downside risk	8.41	4.58	+3.83
Omega ratio: Gain probability vs. loss probability	2.20	1.61	+0.58
Calmar ratio: Return relative to maximum drawdown	9.97	4.15	+5.81
Martin ratio: Return relative to average drawdown	47.91	19.56	+28.35

MYCG vs. SDSI - Sharpe Ratio Comparison

The current MYCG Sharpe Ratio is 4.58, which is higher than the SDSI Sharpe Ratio of 3.03. The chart below compares the historical Sharpe Ratios of MYCG and SDSI, 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

MYCG vs. SDSI - Drawdown Comparison

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

Drawdown Indicators

	MYCG	SDSI	Difference
Max Drawdown Largest peak-to-trough decline	-0.86%	-1.29%	+0.43%
Max Drawdown (1Y) Largest decline over 1 year	-0.45%	-1.17%	+0.72%
Max Drawdown (3Y) Largest decline over 3 years	—	-1.29%	—
Current Drawdown Current decline from peak	0.00%	-0.07%	+0.07%
Average Drawdown Average peak-to-trough decline	-0.14%	-0.24%	+0.10%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.09%	0.25%	-0.16%

Volatility

MYCG vs. SDSI - Volatility Comparison

The current volatility for State Street My2027 Corporate Bond ETF (MYCG) is 0.22%, while American Century Short Duration Strategic Income ETF (SDSI) has a volatility of 0.49%. This indicates that MYCG experiences smaller price fluctuations and is considered to be less risky than SDSI based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

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

MYCG vs. SDSI - Expense Ratio Comparison

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

Dividends

MYCG vs. SDSI - Dividend Comparison

MYCG's dividend yield for the trailing twelve months is around 4.28%, less than SDSI's 4.78% yield.

Position	TTM	2025	2024	2023	2022
MYCG State Street My2027 Corporate Bond ETF	4.28%	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 MYCG and SDSI in my portfolio?

MYCG and SDSI 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, MYCG or SDSI?

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

Which ETF is better, MYCG or SDSI?

On 1-year performance, SDSI leads with 4.84% vs 4.43% 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, MYCG or SDSI?

Over the 1-year period, SDSI has performed better with a 4.84% return vs 4.43%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, MYCG or SDSI?

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

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

SDSI has the higher dividend yield at 4.78%, compared with 4.28% for MYCG.

What is the main difference between MYCG and SDSI?

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

Which has better risk-adjusted returns?

MYCG currently has the higher Sharpe Ratio (4.58 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.