MDBA.DE vs. PRAS.DE

Last updated Jun 5, 2026

MDBA.DE (UBS ETF (LU) Sustainable Development Bank Bonds UCITS ETF (USD) Acc) and PRAS.DE (Amundi Prime US Treasury UCITS ETF) are both Government Bonds funds - MDBA.DE tracks the Solactive UBS Global Multilateral Development Bank Bond USD 25% Issuer Capped while PRAS.DE tracks the Solactive US Treasury Bond. Both are passively managed. Over the past 5 years, MDBA.DE returned 1.90%/yr vs 0.57%/yr for PRAS.DE. Their correlation of 0.89 suggests significant overlap in exposure. MDBA.DE charges 0.15%/yr vs 0.05%/yr for PRAS.DE.

Performance

MDBA.DE vs. PRAS.DE - Performance Comparison

The chart below illustrates the hypothetical performance of a €10,000 investment in UBS ETF (LU) Sustainable Development Bank Bonds UCITS ETF (USD) Acc (MDBA.DE) and Amundi Prime US Treasury UCITS ETF (PRAS.DE). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, MDBA.DE achieves a 1.20% return, which is significantly higher than PRAS.DE's 1.07% 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*: —

PRAS.DE

• 1D: 0.03%
• 1M: 0.83%
• YTD: 1.07%
• 6M: 0.30%
• 1Y: 1.60%
• 3Y*: 0.10%
• 5Y*: 0.57%
• 10Y*: —

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

MDBA.DE vs. PRAS.DE - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020
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%	-6.89%
PRAS.DE Amundi Prime US Treasury UCITS ETF	1.07%	-5.52%	6.51%	0.42%	-6.75%	6.02%	-5.49%

Correlation

The correlation between MDBA.DE and PRAS.DE is 0.94, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.94
Correlation (3Y) Calculated over the trailing 3-year period	0.91
Correlation (5Y) Calculated over the trailing 5-year period	0.90
Correlation (All Time) Calculated using the full available price history since Jan 30, 2020	0.89

The correlation between MDBA.DE and PRAS.DE has been stable across timeframes, ranging from 0.89 to 0.94 - a consistent structural relationship.

Return for Risk

MDBA.DE vs. PRAS.DE — Risk / Return Rank

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

MDBA.DE

MDBA.DE Risk / Return Rank: 13
MDBA.DE Sharpe Ratio Rank: 14
MDBA.DE Sortino Ratio Rank: 13
MDBA.DE Omega Ratio Rank: 12
MDBA.DE Calmar Ratio Rank: 14
MDBA.DE Martin Ratio Rank: 14

PRAS.DE

PRAS.DE Risk / Return Rank: 13
PRAS.DE Sharpe Ratio Rank: 14
PRAS.DE Sortino Ratio Rank: 12
PRAS.DE Omega Ratio Rank: 12
PRAS.DE Calmar Ratio Rank: 14
PRAS.DE Martin Ratio Rank: 14

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.

MDBA.DE vs. PRAS.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 Amundi Prime US Treasury UCITS ETF (PRAS.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	PRAS.DE	Difference
Sharpe ratio: Return per unit of total volatility	0.31	0.29	+0.01
Sortino ratio: Return per unit of downside risk	0.48	0.46	+0.02
Omega ratio: Gain probability vs. loss probability	1.05	1.05	0.00
Calmar ratio: Return relative to maximum drawdown	0.43	0.41	+0.02
Martin ratio: Return relative to average drawdown	1.04	1.00	+0.05
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

MDBA.DE vs. PRAS.DE - Sharpe Ratio Comparison

The current MDBA.DE Sharpe Ratio is 0.31, which is comparable to the PRAS.DE Sharpe Ratio of 0.29. The chart below compares the historical Sharpe Ratios of MDBA.DE and PRAS.DE, 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

	MDBA.DE	PRAS.DE	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.31	0.29	+0.01
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.26	0.07	+0.19
Sharpe Ratio (All Time) Calculated using the full available price history	0.24	-0.09	+0.33

Drawdowns

MDBA.DE vs. PRAS.DE - Drawdown Comparison

The maximum MDBA.DE drawdown since its inception was -12.17%, smaller than the maximum PRAS.DE drawdown of -17.44%. Use the drawdown chart below to compare losses from any high point for MDBA.DE and PRAS.DE.

Drawdown Indicators

	MDBA.DE	PRAS.DE	Difference
Max Drawdown Largest peak-to-trough decline	-12.17%	-17.44%	+5.27%
Max Drawdown (1Y) Largest decline over 1 year	-3.81%	-3.91%	+0.10%
Max Drawdown (3Y) Largest decline over 3 years	-10.11%	-11.09%	+0.98%
Max Drawdown (5Y) Largest decline over 5 years	-12.02%	-12.89%	+0.87%
Current Drawdown Current decline from peak	-6.13%	-12.85%	+6.72%
Average Drawdown Average peak-to-trough decline	-5.56%	-11.40%	+5.84%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.55%	1.60%	-0.05%

Volatility

MDBA.DE vs. PRAS.DE - Volatility Comparison

UBS ETF (LU) Sustainable Development Bank Bonds UCITS ETF (USD) Acc (MDBA.DE) has a higher volatility of 0.85% compared to Amundi Prime US Treasury UCITS ETF (PRAS.DE) at 0.80%. This indicates that MDBA.DE's price experiences larger fluctuations and is considered to be riskier than PRAS.DE based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	MDBA.DE	PRAS.DE	Difference
Volatility (1M) Calculated over the trailing 1-month period	0.85%	0.80%	+0.05%
Volatility (6M) Calculated over the trailing 6-month period	3.65%	3.73%	-0.08%
Volatility (1Y) Calculated over the trailing 1-year period	5.31%	5.45%	-0.14%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	7.26%	8.00%	-0.74%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	7.03%	8.04%	-1.01%

MDBA.DE vs. PRAS.DE - Expense Ratio Comparison

MDBA.DE has a 0.15% expense ratio, which is higher than PRAS.DE's 0.05% expense ratio. However, 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. PRAS.DE - Dividend Comparison

Neither MDBA.DE nor PRAS.DE has paid dividends to shareholders.

Tickers have no history of dividend payments

Frequently Asked Questions

Can I hold both MDBA.DE and PRAS.DE in my portfolio?

With a correlation of 0.94, MDBA.DE and PRAS.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.

Which ETF is better, MDBA.DE or PRAS.DE?

On fees, PRAS.DE is cheaper at 0.05% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, MDBA.DE or PRAS.DE?

PRAS.DE is cheaper with a 0.05% expense ratio, compared with 0.15% for MDBA.DE.

What is the main difference between MDBA.DE and PRAS.DE?

MDBA.DE tracks Solactive UBS Global Multilateral Development Bank Bond USD 25% Issuer Capped, while PRAS.DE tracks Solactive US Treasury Bond. They also come from different issuers: UBS and Amundi. Their fees differ too: 0.15% for MDBA.DE and 0.05% for PRAS.DE.