CBUF.DE vs. 2B70.DE

Last updated Jun 5, 2026

CBUF.DE (iShares MSCI World Health Care Sector ESG UCITS ETF USD Dist) and 2B70.DE (iShares Nasdaq US Biotechnology UCITS ETF) are both Health & Biotech Equities funds from iShares - CBUF.DE tracks the MSCI World Health Care ESG Reduced Carbon Select 20 35 Capped while 2B70.DE tracks the Nasdaq Biotechnology. Both are passively managed. Over the past 5 years, CBUF.DE returned 4.66%/yr vs 5.68%/yr for 2B70.DE. A 0.70 correlation means they provide meaningful diversification when combined. CBUF.DE charges 0.18%/yr vs 0.35%/yr for 2B70.DE.

Performance

CBUF.DE vs. 2B70.DE - Performance Comparison

The chart below illustrates the hypothetical performance of a €10,000 investment in iShares MSCI World Health Care Sector ESG UCITS ETF USD Dist (CBUF.DE) and iShares Nasdaq US Biotechnology UCITS ETF (2B70.DE). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, CBUF.DE achieves a -2.22% return, which is significantly lower than 2B70.DE's 4.53% 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*: —

2B70.DE

• 1D: 3.29%
• 1M: 1.98%
• YTD: 4.53%
• 6M: 3.42%
• 1Y: 39.14%
• 3Y*: 10.00%
• 5Y*: 5.68%
• 10Y*: —

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

CBUF.DE vs. 2B70.DE - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019
CBUF.DE iShares MSCI World Health Care Sector ESG UCITS ETF USD Dist	-2.22%	2.56%	0.75%	0.33%	2.09%	30.42%	2.79%	11.42%
2B70.DE iShares Nasdaq US Biotechnology UCITS ETF	4.53%	18.62%	4.60%	2.56%	-6.29%	7.59%	14.52%	14.44%

Correlation

The correlation between CBUF.DE and 2B70.DE is 0.70, 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	0.70
Correlation (3Y) Calculated over the trailing 3-year period	0.64
Correlation (5Y) Calculated over the trailing 5-year period	0.67
Correlation (All Time) Calculated using the full available price history since Oct 23, 2019	0.70

The correlation between CBUF.DE and 2B70.DE has been stable across timeframes, ranging from 0.64 to 0.70 - a consistent structural relationship.

Return for Risk

CBUF.DE vs. 2B70.DE — Risk / Return Rank

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

CBUF.DE

CBUF.DE Risk / Return Rank: 17
CBUF.DE Sharpe Ratio Rank: 18
CBUF.DE Sortino Ratio Rank: 18
CBUF.DE Omega Ratio Rank: 17
CBUF.DE Calmar Ratio Rank: 18
CBUF.DE Martin Ratio Rank: 17

2B70.DE

2B70.DE Risk / Return Rank: 71
2B70.DE Sharpe Ratio Rank: 62
2B70.DE Sortino Ratio Rank: 63
2B70.DE Omega Ratio Rank: 56
2B70.DE Calmar Ratio Rank: 92
2B70.DE Martin Ratio Rank: 84

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.

CBUF.DE vs. 2B70.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 iShares Nasdaq US Biotechnology UCITS ETF (2B70.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	2B70.DE	Difference
Sharpe ratio: Return per unit of total volatility	0.53	2.04	-1.51
Sortino ratio: Return per unit of downside risk	0.88	2.89	-2.02
Omega ratio: Gain probability vs. loss probability	1.10	1.34	-0.24
Calmar ratio: Return relative to maximum drawdown	0.68	6.15	-5.48
Martin ratio: Return relative to average drawdown	1.56	17.06	-15.50
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

CBUF.DE vs. 2B70.DE - Sharpe Ratio Comparison

The current CBUF.DE Sharpe Ratio is 0.53, which is lower than the 2B70.DE Sharpe Ratio of 2.04. The chart below compares the historical Sharpe Ratios of CBUF.DE and 2B70.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

	CBUF.DE	2B70.DE	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.53	2.04	-1.51
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.34	0.28	+0.06
Sharpe Ratio (All Time) Calculated using the full available price history	0.44	0.36	+0.08

Drawdowns

CBUF.DE vs. 2B70.DE - Drawdown Comparison

The maximum CBUF.DE drawdown since its inception was -25.94%, smaller than the maximum 2B70.DE drawdown of -30.87%. Use the drawdown chart below to compare losses from any high point for CBUF.DE and 2B70.DE.

Drawdown Indicators

	CBUF.DE	2B70.DE	Difference
Max Drawdown Largest peak-to-trough decline	-25.94%	-30.87%	+4.93%
Max Drawdown (1Y) Largest decline over 1 year	-10.87%	-6.33%	-4.54%
Max Drawdown (3Y) Largest decline over 3 years	-21.76%	-29.34%	+7.58%
Max Drawdown (5Y) Largest decline over 5 years	-21.76%	-30.87%	+9.11%
Current Drawdown Current decline from peak	-9.66%	-1.26%	-8.40%
Average Drawdown Average peak-to-trough decline	-5.65%	-10.01%	+4.36%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.74%	2.29%	+2.45%

Volatility

CBUF.DE vs. 2B70.DE - Volatility Comparison

The current volatility for iShares MSCI World Health Care Sector ESG UCITS ETF USD Dist (CBUF.DE) is 4.98%, while iShares Nasdaq US Biotechnology UCITS ETF (2B70.DE) has a volatility of 6.65%. This indicates that CBUF.DE experiences smaller price fluctuations and is considered to be less risky than 2B70.DE based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	CBUF.DE	2B70.DE	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.98%	6.65%	-1.67%
Volatility (6M) Calculated over the trailing 6-month period	9.70%	14.26%	-4.56%
Volatility (1Y) Calculated over the trailing 1-year period	13.98%	19.09%	-5.11%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	13.60%	20.34%	-6.74%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	15.36%	21.76%	-6.40%

CBUF.DE vs. 2B70.DE - Expense Ratio Comparison

CBUF.DE has a 0.18% expense ratio, which is lower than 2B70.DE's 0.35% expense ratio.

Dividends

CBUF.DE vs. 2B70.DE - Dividend Comparison

CBUF.DE's dividend yield for the trailing twelve months is around 1.08%, while 2B70.DE has not paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021	2020	2019
2B70.DE iShares Nasdaq US Biotechnology UCITS ETF	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
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%

Frequently Asked Questions

Can I hold both CBUF.DE and 2B70.DE in my portfolio?

CBUF.DE and 2B70.DE have a correlation of 0.70, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, CBUF.DE or 2B70.DE?

On fees, CBUF.DE is cheaper at 0.18% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, CBUF.DE or 2B70.DE?

CBUF.DE is cheaper with a 0.18% expense ratio, compared with 0.35% for 2B70.DE.

What is the main difference between CBUF.DE and 2B70.DE?

CBUF.DE tracks MSCI World Health Care ESG Reduced Carbon Select 20 35 Capped, while 2B70.DE tracks Nasdaq Biotechnology. Their fees differ too: 0.18% for CBUF.DE and 0.35% for 2B70.DE.