CBUF.DE vs. WELS.DE
CBUF.DE (iShares MSCI World Health Care Sector ESG UCITS ETF USD Dist) and WELS.DE (Amundi S&P Global Health Care ESG UCITS ETF EUR Acc) are both Health & Biotech Equities funds - CBUF.DE tracks the MSCI World Health Care ESG Reduced Carbon Select 20 35 Capped while WELS.DE tracks the S&P Developed Ex-Korea LargeMidCap Sustainability Enhanced Health Care. Both are passively managed. Over the past 3 years, CBUF.DE returned 0.62%/yr vs 2.22%/yr for WELS.DE. Their correlation of 0.94 suggests significant overlap in exposure. Both charge a 0.18% expense ratio.
Performance
CBUF.DE vs. WELS.DE - Performance Comparison
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Returns By Period
In the year-to-date period, CBUF.DE achieves a -2.22% return, which is significantly higher than WELS.DE's -3.35% return.
CBUF.DE
- 1D
- 2.74%
- 1M
- 3.91%
- YTD
- -2.22%
- 6M
- -1.50%
- 1Y
- 7.40%
- 3Y*
- 0.62%
- 5Y*
- 4.66%
- 10Y*
- —
WELS.DE
- 1D
- 2.97%
- 1M
- 4.14%
- YTD
- -3.35%
- 6M
- -2.82%
- 1Y
- 6.93%
- 3Y*
- 2.22%
- 5Y*
- —
- 10Y*
- —
CBUF.DE vs. WELS.DE - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | |
|---|---|---|---|---|---|
CBUF.DE iShares MSCI World Health Care Sector ESG UCITS ETF USD Dist | -2.22% | 2.56% | 0.75% | 0.33% | 3.46% |
WELS.DE Amundi S&P Global Health Care ESG UCITS ETF EUR Acc | -3.35% | 1.05% | 7.20% | 2.33% | 4.02% |
Correlation
The correlation between CBUF.DE and WELS.DE is 0.96 - 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 | 0.96 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.94 |
Correlation (All Time) Calculated using the full available price history since Oct 12, 2022 | 0.94 |
The correlation between CBUF.DE and WELS.DE has been stable across timeframes, ranging from 0.94 to 0.96 - a consistent structural relationship.
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Return for Risk
CBUF.DE vs. WELS.DE — Risk / Return Rank
CBUF.DE
WELS.DE
CBUF.DE vs. WELS.DE - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for iShares MSCI World Health Care Sector ESG UCITS ETF USD Dist (CBUF.DE) and Amundi S&P Global Health Care ESG UCITS ETF EUR Acc (WELS.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.
| CBUF.DE | WELS.DE | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +0.05 | ||
| Sortino ratioReturn per unit of downside risk | +0.05 | ||
| Omega ratioGain probability vs. loss probability | 1.10 | 1.09 | +0.01 |
| Calmar ratioReturn relative to maximum drawdown | 0.68 | 0.56 | +0.12 |
| Martin ratioReturn relative to average drawdown | 1.56 | 1.30 | +0.26 |
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
| CBUF.DE | WELS.DE | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 0.53 | 0.47 | +0.05 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.34 | — | — |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.44 | 0.22 | +0.22 |
Drawdowns
CBUF.DE vs. WELS.DE - Drawdown Comparison
The maximum CBUF.DE drawdown since its inception was -25.94%, which is greater than WELS.DE's maximum drawdown of -23.13%. Use the drawdown chart below to compare losses from any high point for CBUF.DE and WELS.DE.
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Drawdown Indicators
| CBUF.DE | WELS.DE | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -25.94% | -23.13% | -2.81% |
Max Drawdown (1Y)Largest decline over 1 year | -10.87% | -12.35% | +1.48% |
Max Drawdown (3Y)Largest decline over 3 years | -21.76% | -23.13% | +1.37% |
Max Drawdown (5Y)Largest decline over 5 years | -21.76% | — | — |
Current DrawdownCurrent decline from peak | -9.66% | -12.08% | +2.42% |
Average DrawdownAverage peak-to-trough decline | -5.65% | -7.30% | +1.65% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 4.74% | 5.34% | -0.60% |
Volatility
CBUF.DE vs. WELS.DE - Volatility Comparison
The current volatility for iShares MSCI World Health Care Sector ESG UCITS ETF USD Dist (CBUF.DE) is 4.98%, while Amundi S&P Global Health Care ESG UCITS ETF EUR Acc (WELS.DE) has a volatility of 5.27%. This indicates that CBUF.DE experiences smaller price fluctuations and is considered to be less risky than WELS.DE based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| CBUF.DE | WELS.DE | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 4.98% | 5.27% | -0.29% |
Volatility (6M)Calculated over the trailing 6-month period | 9.70% | 10.22% | -0.52% |
Volatility (1Y)Calculated over the trailing 1-year period | 13.98% | 14.60% | -0.62% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 13.60% | 13.59% | +0.01% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 15.36% | 13.59% | +1.77% |
CBUF.DE vs. WELS.DE - Expense Ratio Comparison
Both CBUF.DE and WELS.DE have an expense ratio of 0.18%, making them cost-effective options compared to the broader market, where average expense ratios typically range from 0.3% to 0.9%.
Dividends
CBUF.DE vs. WELS.DE - Dividend Comparison
CBUF.DE's dividend yield for the trailing twelve months is around 1.08%, while WELS.DE has not paid dividends to shareholders.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 |
|---|---|---|---|---|---|---|---|---|
CBUF.DE iShares MSCI World Health Care Sector ESG UCITS ETF USD Dist | 1.08% | 1.06% | 1.02% | 1.16% | 1.09% | 1.05% | 1.27% | 0.10% |
WELS.DE Amundi S&P Global Health Care ESG UCITS ETF EUR Acc | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% | 0.00% |
Frequently Asked Questions
With a correlation of 0.96, CBUF.DE and WELS.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.
Both ETFs have the same 0.18% expense ratio. The better choice depends on whether you care most about return, fees, risk, or income.
CBUF.DE and WELS.DE have the same expense ratio: 0.18% per year.
CBUF.DE tracks MSCI World Health Care ESG Reduced Carbon Select 20 35 Capped, while WELS.DE tracks S&P Developed Ex-Korea LargeMidCap Sustainability Enhanced Health Care. They also come from different issuers: iShares and Amundi.
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