FMUB vs. GSG

Last updated Jun 5, 2026

FMUB (Fidelity Municipal Bond Opportunities ETF) and GSG (iShares S&P GSCI Commodity-Indexed Trust) are both exchange-traded funds - FMUB is a Municipal Bonds fund actively managed by Fidelity, while GSG is a Commodities fund tracking the S&P GSCI Total Return Index. FMUB is actively managed, while GSG is passively managed. Over the past year, FMUB returned 7.69% vs 49.68% for GSG. At a correlation of -0.24, they often move in opposite directions. FMUB charges 0.30%/yr vs 0.75%/yr for GSG.

Performance

FMUB vs. GSG - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Fidelity Municipal Bond Opportunities ETF (FMUB) 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, FMUB achieves a 2.00% return, which is significantly lower than GSG's 40.46% return.

FMUB

• 1D: 0.11%
• 1M: 0.88%
• YTD: 2.00%
• 6M: 2.22%
• 1Y: 7.69%
• 3Y*: —
• 5Y*: —
• 10Y*: —

GSG

• 1D: -1.49%
• 1M: -5.32%
• YTD: 40.46%
• 6M: 38.18%
• 1Y: 49.68%
• 3Y*: 18.78%
• 5Y*: 15.39%
• 10Y*: 7.42%

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

FMUB vs. GSG - Yearly Performance Comparison

	2026 (YTD)	2025
FMUB Fidelity Municipal Bond Opportunities ETF	2.00%	6.63%
GSG iShares S&P GSCI Commodity-Indexed Trust	40.46%	11.78%

Correlation

The correlation between FMUB and GSG is -0.30, 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	-0.30
Correlation (All Time) Calculated using the full available price history since Apr 8, 2025	-0.24

Return for Risk

FMUB vs. GSG — Risk / Return Rank

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

FMUB

FMUB Risk / Return Rank: 81
FMUB Sharpe Ratio Rank: 88
FMUB Sortino Ratio Rank: 91
FMUB Omega Ratio Rank: 93
FMUB Calmar Ratio Rank: 63
FMUB Martin Ratio Rank: 68

GSG

GSG Risk / Return Rank: 71
GSG Sharpe Ratio Rank: 67
GSG Sortino Ratio Rank: 60
GSG Omega Ratio Rank: 66
GSG Calmar Ratio Rank: 89
GSG Martin Ratio Rank: 74

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.

FMUB vs. GSG - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Fidelity Municipal Bond Opportunities ETF (FMUB) 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.

	FMUB	GSG	Difference
Sharpe ratio: Return per unit of total volatility	2.90	2.17	+0.73
Sortino ratio: Return per unit of downside risk	4.27	2.79	+1.48
Omega ratio: Gain probability vs. loss probability	1.63	1.39	+0.24
Calmar ratio: Return relative to maximum drawdown	3.10	5.28	-2.18
Martin ratio: Return relative to average drawdown	12.34	13.78	-1.44
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

FMUB vs. GSG - Sharpe Ratio Comparison

The current FMUB Sharpe Ratio is 2.90, which is higher than the GSG Sharpe Ratio of 2.17. The chart below compares the historical Sharpe Ratios of FMUB 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

	FMUB	GSG	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.90	2.17	+0.73
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	0.68	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.34	—
Sharpe Ratio (All Time) Calculated using the full available price history	2.33	-0.09	+2.42

Drawdowns

FMUB vs. GSG - Drawdown Comparison

The maximum FMUB drawdown since its inception was -2.49%, smaller than the maximum GSG drawdown of -89.62%. Use the drawdown chart below to compare losses from any high point for FMUB and GSG.

Drawdown Indicators

	FMUB	GSG	Difference
Max Drawdown Largest peak-to-trough decline	-2.49%	-89.62%	+87.13%
Max Drawdown (1Y) Largest decline over 1 year	-2.49%	-9.46%	+6.97%
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	0.00%	-57.59%	+57.59%
Average Drawdown Average peak-to-trough decline	-0.38%	-63.71%	+63.33%
Ulcer Index Depth and duration of drawdowns from previous peaks	0.63%	3.62%	-2.99%

Volatility

FMUB vs. GSG - Volatility Comparison

The current volatility for Fidelity Municipal Bond Opportunities ETF (FMUB) is 0.87%, while iShares S&P GSCI Commodity-Indexed Trust (GSG) has a volatility of 7.72%. This indicates that FMUB 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

	FMUB	GSG	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.87%	7.72%	-6.85%
Volatility (6M) Calculated over the trailing 6-month period	1.99%	20.48%	-18.49%
Volatility (1Y) Calculated over the trailing 1-year period	2.66%	23.01%	-20.35%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	3.25%	22.61%	-19.36%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	3.25%	22.03%	-18.78%

FMUB vs. GSG - Expense Ratio Comparison

FMUB has a 0.30% expense ratio, which is lower than GSG's 0.75% expense ratio.

Dividends

FMUB vs. GSG - Dividend Comparison

FMUB's dividend yield for the trailing twelve months is around 3.42%, while GSG has not paid dividends to shareholders.

Position	TTM	2025
FMUB Fidelity Municipal Bond Opportunities ETF	3.42%	2.63%
GSG iShares S&P GSCI Commodity-Indexed Trust	0.00%	0.00%

Frequently Asked Questions

Can I hold both FMUB and GSG in my portfolio?

FMUB and GSG have a correlation of -0.30, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which is riskier, FMUB or GSG?

GSG has higher volatility (7.72%) compared to FMUB (0.87%). In terms of maximum drawdown, FMUB dropped -2.49% vs GSG's -89.62%.

Which ETF is better, FMUB or GSG?

On 1-year performance, GSG leads with 49.68% vs 7.69% for FMUB. On fees, FMUB is cheaper at 0.30% per year. On volatility, FMUB has been the lower-risk option at 0.87%. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF has performed better, FMUB or GSG?

Over the 1-year period, GSG has performed better with a 49.68% return vs 7.69%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.

Which ETF is cheaper, FMUB or GSG?

FMUB is cheaper with a 0.30% expense ratio, compared with 0.75% for GSG.

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

FMUB has the higher dividend yield at 3.42%, compared with 0.00% for GSG.

What is the main difference between FMUB and GSG?

FMUB is categorized as Municipal Bonds, while GSG is Commodities. They also come from different issuers: Fidelity and iShares. Their fees differ too: 0.30% for FMUB and 0.75% for GSG.

Which has better risk-adjusted returns?

FMUB currently has the higher Sharpe Ratio (2.90 vs 2.17), 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.