MDBA.DE vs. MDBU.DE
MDBA.DE (UBS ETF (LU) Sustainable Development Bank Bonds UCITS ETF (USD) Acc) and MDBU.DE (UBS ETF (LU) Sustainable Development Bank Bonds UCITS ETF (USD) A-dis) are both Government Bonds funds from UBS - MDBA.DE tracks the Solactive UBS Global Multilateral Development Bank Bond USD 25% Issuer Capped while MDBU.DE tracks the Solactive Global Multilateral Development Bank Bond USD 25% Issuer Capped Index. Both are passively managed. Over the past 5 years, MDBA.DE returned 1.90%/yr vs 1.69%/yr for MDBU.DE. With a 0.98 correlation, they move nearly in lockstep. MDBA.DE charges 0.15%/yr vs 0.18%/yr for MDBU.DE.
Performance
MDBA.DE vs. MDBU.DE - Performance Comparison
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Returns By Period
In the year-to-date period, MDBA.DE achieves a 1.20% return, which is significantly higher than MDBU.DE's 1.02% return.
MDBA.DE
- 1D
- 0.00%
- 1M
- 0.73%
- YTD
- 1.20%
- 6M
- 0.67%
- 1Y
- 1.63%
- 3Y*
- 1.12%
- 5Y*
- 1.90%
- 10Y*
- —
MDBU.DE
- 1D
- 0.09%
- 1M
- 0.78%
- YTD
- 1.02%
- 6M
- 0.39%
- 1Y
- 1.13%
- 3Y*
- 0.83%
- 5Y*
- 1.69%
- 10Y*
- —
MDBA.DE vs. MDBU.DE - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | |
|---|---|---|---|---|---|---|---|---|---|
MDBA.DE UBS ETF (LU) Sustainable Development Bank Bonds UCITS ETF (USD) Acc | 1.20% | -5.19% | 8.65% | 0.89% | -1.84% | 6.67% | -4.47% | 7.64% | 0.37% |
MDBU.DE UBS ETF (LU) Sustainable Development Bank Bonds UCITS ETF (USD) A-dis | 1.02% | -5.52% | 8.42% | 0.69% | -1.90% | 6.58% | -4.66% | 7.40% | 0.42% |
Correlation
The correlation between MDBA.DE and MDBU.DE is 0.98 - these two move nearly in lockstep. At this level, holding both provides almost no diversification benefit. If you already own one, adding the other does little to reduce portfolio risk.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.98 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.99 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.99 |
Correlation (All Time) Calculated using the full available price history since Nov 15, 2018 | 0.98 |
The correlation between MDBA.DE and MDBU.DE has been stable across timeframes, ranging from 0.98 to 0.99 - a consistent structural relationship.
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Return for Risk
MDBA.DE vs. MDBU.DE — Risk / Return Rank
MDBA.DE
MDBU.DE
MDBA.DE vs. MDBU.DE - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for UBS ETF (LU) Sustainable Development Bank Bonds UCITS ETF (USD) Acc (MDBA.DE) and UBS ETF (LU) Sustainable Development Bank Bonds UCITS ETF (USD) A-dis (MDBU.DE). 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.
| MDBA.DE | MDBU.DE | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.10 | ||
| Sortino ratioReturn per unit of downside risk | +0.14 | ||
| Omega ratioGain probability vs. loss probability | 1.05 | 1.04 | +0.02 |
| Calmar ratioReturn relative to maximum drawdown | 0.43 | 0.30 | +0.13 |
| Martin ratioReturn relative to average drawdown | 1.04 | 0.72 | +0.33 |
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
| MDBA.DE | MDBU.DE | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.31 | 0.21 | +0.10 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.26 | 0.23 | +0.03 |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.24 | 0.22 | +0.02 |
Drawdowns
MDBA.DE vs. MDBU.DE - Drawdown Comparison
The maximum MDBA.DE drawdown since its inception was -12.17%, roughly equal to the maximum MDBU.DE drawdown of -12.38%. Use the drawdown chart below to compare losses from any high point for MDBA.DE and MDBU.DE.
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Drawdown Indicators
| MDBA.DE | MDBU.DE | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -12.17% | -12.38% | +0.21% |
Max Drawdown (1Y)Largest decline over 1 year | -3.81% | -3.81% | 0.00% |
Max Drawdown (3Y)Largest decline over 3 years | -10.11% | -10.06% | -0.05% |
Max Drawdown (5Y)Largest decline over 5 years | -12.02% | -12.09% | +0.07% |
Current DrawdownCurrent decline from peak | -6.13% | -6.60% | +0.47% |
Average DrawdownAverage peak-to-trough decline | -5.56% | -5.71% | +0.15% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 1.55% | 1.57% | -0.02% |
Volatility
MDBA.DE vs. MDBU.DE - Volatility Comparison
The current volatility for UBS ETF (LU) Sustainable Development Bank Bonds UCITS ETF (USD) Acc (MDBA.DE) is 0.85%, while UBS ETF (LU) Sustainable Development Bank Bonds UCITS ETF (USD) A-dis (MDBU.DE) has a volatility of 0.90%. This indicates that MDBA.DE experiences smaller price fluctuations and is considered to be less risky than MDBU.DE based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| MDBA.DE | MDBU.DE | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 0.85% | 0.90% | -0.05% |
Volatility (6M)Calculated over the trailing 6-month period | 3.65% | 3.83% | -0.18% |
Volatility (1Y)Calculated over the trailing 1-year period | 5.31% | 5.40% | -0.09% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 7.26% | 7.21% | +0.05% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 7.03% | 6.88% | +0.15% |
MDBA.DE vs. MDBU.DE - Expense Ratio Comparison
MDBA.DE has a 0.15% expense ratio, which is lower than MDBU.DE's 0.18% expense ratio. Despite the difference, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.
Dividends
MDBA.DE vs. MDBU.DE - Dividend Comparison
MDBA.DE has not paid dividends to shareholders, while MDBU.DE's dividend yield for the trailing twelve months is around 2.66%.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 |
|---|---|---|---|---|---|---|---|---|
MDBA.DE UBS ETF (LU) Sustainable Development Bank Bonds UCITS ETF (USD) Acc | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
MDBU.DE UBS ETF (LU) Sustainable Development Bank Bonds UCITS ETF (USD) A-dis | 2.66% | 3.79% | 1.92% | 1.75% | 0.75% | 0.59% | 1.58% | 1.40% |
Frequently Asked Questions
With a correlation of 0.98, MDBA.DE and MDBU.DE move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.
On fees, MDBA.DE is cheaper at 0.15% per year. The better choice depends on whether you care most about return, fees, risk, or income.
MDBA.DE is cheaper with a 0.15% expense ratio, compared with 0.18% for MDBU.DE.
MDBA.DE tracks Solactive UBS Global Multilateral Development Bank Bond USD 25% Issuer Capped, while MDBU.DE tracks Solactive Global Multilateral Development Bank Bond USD 25% Issuer Capped Index. Their fees differ too: 0.15% for MDBA.DE and 0.18% for MDBU.DE.
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