MFLX vs. ROBT
Compare and contrast key facts about First Trust Flexible Municipal High Income ETF (MFLX) and First Trust Nasdaq Artificial Intelligence & Robotics ETF (ROBT).
MFLX and ROBT are both exchange-traded funds (ETFs), meaning they are traded on stock exchanges and can be bought and sold throughout the day. MFLX is an actively managed fund by First Trust. It was launched on Sep 27, 2016. ROBT is a passively managed fund by First Trust that tracks the performance of the Nasdaq CTA Artificial Intelligence and Robotics Index. It was launched on Feb 21, 2018.
Performance
MFLX vs. ROBT - Performance Comparison
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MFLX vs. ROBT - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | |
|---|---|---|---|---|---|---|---|---|---|
MFLX First Trust Flexible Municipal High Income ETF | -0.25% | 3.94% | 3.74% | 8.98% | -19.94% | 8.43% | 7.19% | 16.89% | -0.73% |
ROBT First Trust Nasdaq Artificial Intelligence & Robotics ETF | -11.00% | 15.16% | -0.41% | 27.77% | -34.94% | 9.91% | 46.18% | 34.28% | -13.98% |
Returns By Period
In the year-to-date period, MFLX achieves a -0.25% return, which is significantly higher than ROBT's -11.00% return.
MFLX
- 1D
- -0.00%
- 1M
- -3.00%
- YTD
- -0.25%
- 6M
- 1.18%
- 1Y
- 3.35%
- 3Y*
- 4.46%
- 5Y*
- 0.01%
- 10Y*
- —
ROBT
- 1D
- 4.15%
- 1M
- -9.19%
- YTD
- -11.00%
- 6M
- -12.72%
- 1Y
- 13.50%
- 3Y*
- 2.99%
- 5Y*
- -2.47%
- 10Y*
- —
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MFLX vs. ROBT - Expense Ratio Comparison
MFLX has a 0.88% expense ratio, which is higher than ROBT's 0.65% expense ratio.
Return for Risk
MFLX vs. ROBT — Risk / Return Rank
MFLX
ROBT
MFLX vs. ROBT - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for First Trust Flexible Municipal High Income ETF (MFLX) and First Trust Nasdaq Artificial Intelligence & Robotics ETF (ROBT). 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 | ROBT | Difference | |
|---|---|---|---|
Sharpe ratioReturn per unit of total volatility | 0.38 | 0.49 | -0.11 |
Sortino ratioReturn per unit of downside risk | 0.58 | 0.89 | -0.31 |
Omega ratioGain probability vs. loss probability | 1.11 | 1.11 | 0.00 |
Calmar ratioReturn relative to maximum drawdown | 0.56 | 0.55 | +0.01 |
Martin ratioReturn relative to average drawdown | 1.69 | 1.78 | -0.09 |
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 | ROBT | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.38 | 0.49 | -0.11 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.00 | -0.10 | +0.10 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.16 | 0.23 | -0.07 |
Correlation
The correlation between MFLX and ROBT is 0.11, which is considered to be low. This implies their price changes are not closely related. A low correlation is generally favorable for portfolio diversification, as it helps to reduce overall risk by spreading it across multiple assets with different performance patterns.
Dividends
MFLX vs. ROBT - Dividend Comparison
MFLX's dividend yield for the trailing twelve months is around 4.16%, while ROBT has not paid dividends to shareholders.
| TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | |
|---|---|---|---|---|---|---|---|---|---|---|---|
MFLX First Trust Flexible Municipal High Income ETF | 4.16% | 4.06% | 3.81% | 3.65% | 4.27% | 3.69% | 3.21% | 2.94% | 3.74% | 3.80% | 0.98% |
ROBT First Trust Nasdaq Artificial Intelligence & Robotics ETF | 0.00% | 0.00% | 0.68% | 0.23% | 0.35% | 0.06% | 0.17% | 0.42% | 0.44% | 0.00% | 0.00% |
Drawdowns
MFLX vs. ROBT - Drawdown Comparison
The maximum MFLX drawdown since its inception was -26.76%, smaller than the maximum ROBT drawdown of -44.47%. Use the drawdown chart below to compare losses from any high point for MFLX and ROBT.
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Drawdown Indicators
| MFLX | ROBT | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -26.76% | -44.47% | +17.71% |
Max Drawdown (1Y)Largest decline over 1 year | -6.64% | -21.66% | +15.02% |
Max Drawdown (5Y)Largest decline over 5 years | -25.88% | -43.26% | +17.38% |
Current DrawdownCurrent decline from peak | -7.12% | -21.09% | +13.97% |
Average DrawdownAverage peak-to-trough decline | -8.23% | -16.09% | +7.86% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 2.20% | 6.73% | -4.53% |
Volatility
MFLX vs. ROBT - Volatility Comparison
The current volatility for First Trust Flexible Municipal High Income ETF (MFLX) is 1.77%, while First Trust Nasdaq Artificial Intelligence & Robotics ETF (ROBT) has a volatility of 8.78%. This indicates that MFLX experiences smaller price fluctuations and is considered to be less risky than ROBT based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| MFLX | ROBT | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 1.77% | 8.78% | -7.01% |
Volatility (6M)Calculated over the trailing 6-month period | 2.40% | 18.22% | -15.82% |
Volatility (1Y)Calculated over the trailing 1-year period | 8.77% | 27.73% | -18.96% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 10.36% | 25.00% | -14.64% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 11.38% | 25.50% | -14.12% |