MYMI vs. GSG

Last updated Jun 4, 2026

MYMI (State Street My2029 Municipal Bond ETF) and GSG (iShares S&P GSCI Commodity-Indexed Trust) are both exchange-traded funds - MYMI is a Municipal Bonds fund actively managed by State Street, while GSG is a Commodities fund tracking the S&P GSCI Total Return Index. MYMI is actively managed, while GSG is passively managed. Over the past year, MYMI returned 4.85% vs 51.52% for GSG. At a correlation of -0.17, they often move in opposite directions. MYMI charges 0.20%/yr vs 0.75%/yr for GSG.

Performance

MYMI vs. GSG - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in State Street My2029 Municipal Bond ETF (MYMI) and iShares S&P GSCI Commodity-Indexed Trust (GSG). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, MYMI achieves a 1.31% return, which is significantly lower than GSG's 42.58% return.

MYMI

• 1D: 0.00%
• 1M: 0.35%
• YTD: 1.31%
• 6M: 1.53%
• 1Y: 4.85%
• 3Y*: —
• 5Y*: —
• 10Y*: —

GSG

• 1D: 0.77%
• 1M: -4.83%
• YTD: 42.58%
• 6M: 41.06%
• 1Y: 51.52%
• 3Y*: 19.31%
• 5Y*: 15.74%
• 10Y*: 7.69%

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

MYMI vs. GSG - Yearly Performance Comparison

	2026 (YTD)	2025	2024
MYMI State Street My2029 Municipal Bond ETF	1.31%	3.12%	-0.87%
GSG iShares S&P GSCI Commodity-Indexed Trust	42.58%	5.93%	2.01%

Correlation

The correlation between MYMI and GSG is -0.26, meaning they tend to move in opposite directions. This is especially valuable for risk management - when one declines, the other has historically tended to hold steady or rise.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	-0.26
Correlation (All Time) Calculated using the full available price history since Sep 25, 2024	-0.17

Return for Risk

MYMI vs. GSG — Risk / Return Rank

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

MYMI

MYMI Risk / Return Rank: 82
MYMI Sharpe Ratio Rank: 88
MYMI Sortino Ratio Rank: 93
MYMI Omega Ratio Rank: 95
MYMI Calmar Ratio Rank: 72
MYMI Martin Ratio Rank: 66

GSG

GSG Risk / Return Rank: 71
GSG Sharpe Ratio Rank: 67
GSG Sortino Ratio Rank: 60
GSG Omega Ratio Rank: 65
GSG Calmar Ratio Rank: 89
GSG Martin Ratio Rank: 75

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.

MYMI vs. GSG - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for State Street My2029 Municipal Bond ETF (MYMI) and iShares S&P GSCI Commodity-Indexed Trust (GSG). 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.

	MYMI	GSG	Difference
Sharpe ratio: Return per unit of total volatility	2.91	2.26	+0.65
Sortino ratio: Return per unit of downside risk	4.56	2.88	+1.68
Omega ratio: Gain probability vs. loss probability	1.71	1.40	+0.30
Calmar ratio: Return relative to maximum drawdown	3.52	5.47	-1.96
Martin ratio: Return relative to average drawdown	11.89	14.39	-2.50
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

MYMI vs. GSG - Sharpe Ratio Comparison

The current MYMI Sharpe Ratio is 2.91, which is comparable to the GSG Sharpe Ratio of 2.26. The chart below compares the historical Sharpe Ratios of MYMI and GSG, 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

	MYMI	GSG	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.91	2.26	+0.65
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	0.70	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.35	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.72	-0.09	+0.81

Drawdowns

MYMI vs. GSG - Drawdown Comparison

The maximum MYMI drawdown since its inception was -3.11%, smaller than the maximum GSG drawdown of -89.62%. Use the drawdown chart below to compare losses from any high point for MYMI and GSG.

Drawdown Indicators

	MYMI	GSG	Difference
Max Drawdown Largest peak-to-trough decline	-3.11%	-89.62%	+86.51%
Max Drawdown (1Y) Largest decline over 1 year	-1.39%	-9.46%	+8.07%
Max Drawdown (3Y) Largest decline over 3 years	—	-14.94%	—
Max Drawdown (5Y) Largest decline over 5 years	—	-29.12%	—
Max Drawdown (10Y) Largest decline over 10 years	—	-57.64%	—
Current Drawdown Current decline from peak	-0.34%	-56.95%	+56.61%
Average Drawdown Average peak-to-trough decline	-0.71%	-63.71%	+63.00%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.41%	3.59%	-3.18%

Volatility

MYMI vs. GSG - Volatility Comparison

The current volatility for State Street My2029 Municipal Bond ETF (MYMI) is 0.42%, while iShares S&P GSCI Commodity-Indexed Trust (GSG) has a volatility of 7.65%. This indicates that MYMI experiences smaller price fluctuations and is considered to be less risky than GSG based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MYMI	GSG	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.42%	7.65%	-7.23%
Volatility (6M) Calculated over the trailing 6-month period	1.19%	20.42%	-19.23%
Volatility (1Y) Calculated over the trailing 1-year period	1.68%	22.95%	-21.27%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	2.91%	22.61%	-19.70%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	2.91%	22.03%	-19.12%

MYMI vs. GSG - Expense Ratio Comparison

MYMI has a 0.20% expense ratio, which is lower than GSG's 0.75% expense ratio.

Dividends

MYMI vs. GSG - Dividend Comparison

MYMI's dividend yield for the trailing twelve months is around 2.87%, while GSG has not paid dividends to shareholders.

Position	TTM	2025	2024
GSG iShares S&P GSCI Commodity-Indexed Trust	0.00%	0.00%	0.00%
MYMI State Street My2029 Municipal Bond ETF	2.87%	3.00%	0.93%

Frequently Asked Questions

Can I hold both MYMI and GSG in my portfolio?

MYMI and GSG have a correlation of -0.26, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, MYMI or GSG?

GSG has higher volatility (7.65%) compared to MYMI (0.42%). In terms of maximum drawdown, MYMI dropped -3.11% vs GSG's -89.62%.

Which ETF is better, MYMI or GSG?

On 1-year performance, GSG leads with 51.52% vs 4.85% for MYMI. On fees, MYMI is cheaper at 0.20% per year. On volatility, MYMI has been the lower-risk option at 0.42%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, MYMI or GSG?

Over the 1-year period, GSG has performed better with a 51.52% return vs 4.85%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, MYMI or GSG?

MYMI is cheaper with a 0.20% expense ratio, compared with 0.75% for GSG.

Which ETF pays a higher dividend yield, MYMI or GSG?

MYMI has the higher dividend yield at 2.87%, compared with 0.00% for GSG.

What is the main difference between MYMI and GSG?

MYMI is categorized as Municipal Bonds, while GSG is Commodities. They also come from different issuers: State Street and iShares. Their fees differ too: 0.20% for MYMI and 0.75% for GSG.

Which has better risk-adjusted returns?

MYMI currently has the higher Sharpe Ratio (2.91 vs 2.26), 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.