NBTK.DE vs. WELS.DE
NBTK.DE (Invesco Nasdaq Biotech UCITS ETF) and WELS.DE (Amundi S&P Global Health Care ESG UCITS ETF EUR Acc) are both Health & Biotech Equities funds - NBTK.DE tracks the Nasdaq Biotechnology while WELS.DE tracks the S&P Developed Ex-Korea LargeMidCap Sustainability Enhanced Health Care. Both are passively managed. Over the past 3 years, NBTK.DE returned 9.94%/yr vs 2.22%/yr for WELS.DE. A 0.63 correlation means they provide meaningful diversification when combined. NBTK.DE charges 0.40%/yr vs 0.18%/yr for WELS.DE.
Performance
NBTK.DE vs. WELS.DE - Performance Comparison
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Returns By Period
In the year-to-date period, NBTK.DE achieves a 4.27% return, which is significantly higher than WELS.DE's -3.35% return.
NBTK.DE
- 1D
- 2.92%
- 1M
- 0.38%
- YTD
- 4.27%
- 6M
- 3.76%
- 1Y
- 39.20%
- 3Y*
- 9.94%
- 5Y*
- 5.63%
- 10Y*
- —
WELS.DE
- 1D
- 2.97%
- 1M
- 3.85%
- YTD
- -3.35%
- 6M
- -2.89%
- 1Y
- 7.18%
- 3Y*
- 2.22%
- 5Y*
- —
- 10Y*
- —
NBTK.DE vs. WELS.DE - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | |
|---|---|---|---|---|---|
NBTK.DE Invesco Nasdaq Biotech UCITS ETF | 4.27% | 18.60% | 4.57% | 2.51% | -0.84% |
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 NBTK.DE and WELS.DE is 0.71, which is moderate. They share some common price drivers but move independently often enough to provide real diversification benefit when combined.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.71 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.62 |
Correlation (All Time) Calculated using the full available price history since Oct 12, 2022 | 0.63 |
The correlation between NBTK.DE and WELS.DE has been stable across timeframes, ranging from 0.62 to 0.71 - a consistent structural relationship.
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Return for Risk
NBTK.DE vs. WELS.DE — Risk / Return Rank
NBTK.DE
WELS.DE
NBTK.DE vs. WELS.DE - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Invesco Nasdaq Biotech UCITS ETF (NBTK.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.
| NBTK.DE | WELS.DE | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +1.55 | ||
| Sortino ratioReturn per unit of downside risk | +2.04 | ||
| Omega ratioGain probability vs. loss probability | 1.34 | 1.09 | +0.25 |
| Calmar ratioReturn relative to maximum drawdown | 6.16 | 0.56 | +5.60 |
| Martin ratioReturn relative to average drawdown | 17.06 | 1.30 | +15.76 |
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
| NBTK.DE | WELS.DE | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 2.03 | 0.47 | +1.55 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 0.27 | — | — |
Sharpe Ratio (All Time)Calculated using the full available price history | 0.42 | 0.22 | +0.20 |
Drawdowns
NBTK.DE vs. WELS.DE - Drawdown Comparison
The maximum NBTK.DE drawdown since its inception was -30.99%, 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 NBTK.DE and WELS.DE.
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Drawdown Indicators
| NBTK.DE | WELS.DE | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -30.99% | -23.13% | -7.86% |
Max Drawdown (1Y)Largest decline over 1 year | -6.24% | -12.35% | +6.11% |
Max Drawdown (3Y)Largest decline over 3 years | -29.35% | -23.13% | -6.22% |
Max Drawdown (5Y)Largest decline over 5 years | -30.99% | — | — |
Current DrawdownCurrent decline from peak | -1.44% | -12.08% | +10.64% |
Average DrawdownAverage peak-to-trough decline | -10.62% | -7.30% | -3.32% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 2.26% | 5.34% | -3.08% |
Volatility
NBTK.DE vs. WELS.DE - Volatility Comparison
Invesco Nasdaq Biotech UCITS ETF (NBTK.DE) has a higher volatility of 6.41% compared to Amundi S&P Global Health Care ESG UCITS ETF EUR Acc (WELS.DE) at 5.27%. This indicates that NBTK.DE's price experiences larger fluctuations and is considered to be riskier 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
| NBTK.DE | WELS.DE | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 6.41% | 5.27% | +1.14% |
Volatility (6M)Calculated over the trailing 6-month period | 14.11% | 10.22% | +3.89% |
Volatility (1Y)Calculated over the trailing 1-year period | 19.00% | 14.60% | +4.40% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 20.30% | 13.59% | +6.71% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 22.05% | 13.59% | +8.46% |
NBTK.DE vs. WELS.DE - Expense Ratio Comparison
NBTK.DE has a 0.40% expense ratio, which is higher than WELS.DE's 0.18% expense ratio.
Dividends
NBTK.DE vs. WELS.DE - Dividend Comparison
Neither NBTK.DE nor WELS.DE has paid dividends to shareholders.
Frequently Asked Questions
NBTK.DE and WELS.DE have a correlation of 0.71, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
On fees, WELS.DE is cheaper at 0.18% per year. The better choice depends on whether you care most about return, fees, risk, or income.
WELS.DE is cheaper with a 0.18% expense ratio, compared with 0.40% for NBTK.DE.
NBTK.DE tracks Nasdaq Biotechnology, while WELS.DE tracks S&P Developed Ex-Korea LargeMidCap Sustainability Enhanced Health Care. They also come from different issuers: Invesco and Amundi. Their fees differ too: 0.40% for NBTK.DE and 0.18% for WELS.DE.
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