MFLX vs. GSG
MFLX (First Trust Flexible Municipal High Income ETF) and GSG (iShares S&P GSCI Commodity-Indexed Trust) are both exchange-traded funds - MFLX is a Municipal Bonds fund actively managed by First Trust, while GSG is a Commodities fund tracking the S&P GSCI Total Return Index. MFLX is actively managed, while GSG is passively managed. Over the past 5 years, MFLX returned -0.03%/yr vs 15.74%/yr for GSG. At a 0.00 correlation, their price movements are largely independent. MFLX charges 0.88%/yr vs 0.75%/yr for GSG.
Performance
MFLX vs. GSG - Performance Comparison
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Returns By Period
In the year-to-date period, MFLX achieves a 3.33% return, which is significantly lower than GSG's 42.58% return.
MFLX
- 1D
- -0.06%
- 1M
- 1.21%
- YTD
- 3.33%
- 6M
- 3.84%
- 1Y
- 9.22%
- 3Y*
- 5.48%
- 5Y*
- -0.03%
- 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%
MFLX vs. GSG - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
|---|---|---|---|---|---|---|---|---|---|---|
MFLX First Trust Flexible Municipal High Income ETF | 3.33% | 3.94% | 3.74% | 8.98% | -19.94% | 8.43% | 7.19% | 16.89% | -4.66% | 5.57% |
GSG iShares S&P GSCI Commodity-Indexed Trust | 42.58% | 5.93% | 8.52% | -5.51% | 24.08% | 38.77% | -23.94% | 15.62% | -13.88% | 3.89% |
Correlation
The correlation between MFLX and GSG is -0.20, 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 | -0.20 |
Correlation (3Y) Calculated over the trailing 3-year period | -0.06 |
Correlation (5Y) Calculated over the trailing 5-year period | -0.02 |
Correlation (All Time) Calculated using the full available price history since Sep 30, 2016 | 0.00 |
The correlation between MFLX and GSG shifts across timeframes, from -0.20 (1 year) to 0.00 (all time), reflecting how their relationship changes across market environments.
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Return for Risk
MFLX vs. GSG — Risk / Return Rank
MFLX
GSG
MFLX vs. GSG - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for First Trust Flexible Municipal High Income ETF (MFLX) 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.
| MFLX | GSG | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.01 | ||
| Sortino ratioReturn per unit of downside risk | +0.59 | ||
| Omega ratioGain probability vs. loss probability | 1.49 | 1.40 | +0.09 |
| Calmar ratioReturn relative to maximum drawdown | 2.97 | 5.47 | -2.50 |
| Martin ratioReturn relative to average drawdown | 11.95 | 14.39 | -2.45 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
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Sharpe Ratios by Period
| MFLX | GSG | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 2.27 | 2.26 | +0.01 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | -0.00 | 0.70 | -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 | 0.19 | -0.09 | +0.28 |
Drawdowns
MFLX vs. GSG - Drawdown Comparison
The maximum MFLX drawdown since its inception was -26.76%, smaller than the maximum GSG drawdown of -89.62%. Use the drawdown chart below to compare losses from any high point for MFLX and GSG.
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Drawdown Indicators
| MFLX | GSG | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -26.76% | -89.62% | +62.86% |
Max Drawdown (1Y)Largest decline over 1 year | -3.11% | -9.46% | +6.35% |
Max Drawdown (3Y)Largest decline over 3 years | -8.18% | -14.94% | +6.76% |
Max Drawdown (5Y)Largest decline over 5 years | -25.88% | -29.12% | +3.24% |
Max Drawdown (10Y)Largest decline over 10 years | — | -57.64% | — |
Current DrawdownCurrent decline from peak | -3.78% | -56.95% | +53.17% |
Average DrawdownAverage peak-to-trough decline | -8.17% | -63.71% | +55.54% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.77% | 3.59% | -2.82% |
Volatility
MFLX vs. GSG - Volatility Comparison
The current volatility for First Trust Flexible Municipal High Income ETF (MFLX) is 1.41%, while iShares S&P GSCI Commodity-Indexed Trust (GSG) has a volatility of 7.65%. This indicates that MFLX 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.
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Volatility by Period
| MFLX | GSG | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.41% | 7.65% | -6.24% |
Volatility (6M)Calculated over the trailing 6-month period | 2.98% | 20.42% | -17.44% |
Volatility (1Y)Calculated over the trailing 1-year period | 4.08% | 22.95% | -18.87% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 10.36% | 22.61% | -12.25% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 11.29% | 22.03% | -10.74% |
MFLX vs. GSG - Expense Ratio Comparison
MFLX has a 0.88% expense ratio, which is higher than GSG's 0.75% expense ratio.
Dividends
MFLX vs. GSG - Dividend Comparison
MFLX's dividend yield for the trailing twelve months is around 4.08%, while GSG has not paid dividends to shareholders.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 |
|---|---|---|---|---|---|---|---|---|---|---|---|
GSG iShares S&P GSCI Commodity-Indexed Trust | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
MFLX First Trust Flexible Municipal High Income ETF | 4.08% | 4.06% | 3.81% | 3.65% | 4.27% | 3.69% | 3.21% | 2.94% | 3.74% | 3.80% | 0.98% |
Frequently Asked Questions
MFLX and GSG have a correlation of -0.20, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
GSG has higher volatility (7.65%) compared to MFLX (1.41%). In terms of maximum drawdown, MFLX dropped -26.76% vs GSG's -89.62%.
On 5-year performance, GSG leads with 15.74% vs -0.03% for MFLX. On fees, GSG is cheaper at 0.75% per year. On volatility, MFLX has been the lower-risk option at 1.41%. The better choice depends on whether you care most about return, fees, risk, or income.
Over the 5-year period, GSG has performed better with a 15.74% return vs -0.03%. Past performance does not guarantee future results, so compare this with risk, fees, and fund exposure.
GSG is cheaper with a 0.75% expense ratio, compared with 0.88% for MFLX.
MFLX has the higher dividend yield at 4.08%, compared with 0.00% for GSG.
MFLX is categorized as Municipal Bonds, while GSG is Commodities. They also come from different issuers: First Trust and iShares. Their fees differ too: 0.88% for MFLX and 0.75% for GSG.
MFLX currently has the higher Sharpe Ratio (2.27 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.
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