WBIO.L vs. BTEK.L

Last updated Jun 5, 2026

WBIO.L (WisdomTree BioRevolution UCITS ETF USD Acc) and BTEK.L (iShares Nasdaq US Biotechnology UCITS ETF) are both Health & Biotech Equities funds tracking the NASDAQ Biotechnology TR USD, from WisdomTree and iShares respectively. Both are passively managed. Over the past 3 years, WBIO.L returned 1.10%/yr vs 10.19%/yr for BTEK.L. Their correlation of 0.84 suggests significant overlap in exposure. WBIO.L charges 0.45%/yr vs 0.35%/yr for BTEK.L.

Performance

WBIO.L vs. BTEK.L - Performance Comparison

The chart below illustrates the hypothetical performance of a £10,000 investment in WisdomTree BioRevolution UCITS ETF USD Acc (WBIO.L) and iShares Nasdaq US Biotechnology UCITS ETF (BTEK.L). The values are adjusted to include any dividend payments, if applicable.

Different Trading Currencies

WBIO.L is traded in GBp, while BTEK.L is traded in GBP. To make them comparable, the BTEK.L values have been converted to GBp using the latest available exchange rates.

Returns By Period

In the year-to-date period, WBIO.L achieves a 10.42% return, which is significantly higher than BTEK.L's 4.86% return.

WBIO.L

• 1D: 4.36%
• 1M: 3.58%
• YTD: 10.42%
• 6M: 10.85%
• 1Y: 51.43%
• 3Y*: 1.10%
• 5Y*: —
• 10Y*: —

BTEK.L

• 1D: 3.56%
• 1M: 2.25%
• YTD: 4.86%
• 6M: 2.70%
• 1Y: 43.15%
• 3Y*: 10.19%
• 5Y*: 5.85%
• 10Y*: —

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

WBIO.L vs. BTEK.L - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021
WBIO.L WisdomTree BioRevolution UCITS ETF USD Acc	10.42%	13.58%	-14.08%	-5.86%	-18.74%	-1.39%
BTEK.L iShares Nasdaq US Biotechnology UCITS ETF	4.86%	23.81%	-0.32%	0.33%	-1.55%	-1.34%

Correlation

The correlation between WBIO.L and BTEK.L is 0.83, 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	0.83
Correlation (3Y) Calculated over the trailing 3-year period	0.82
Correlation (All Time) Calculated using the full available price history since Dec 10, 2021	0.84

The correlation between WBIO.L and BTEK.L has been stable across timeframes, ranging from 0.82 to 0.84 - a consistent structural relationship.

WBIO.L vs. BTEK.L - Sectors Allocation Comparison

Sectors	WBIO.L	BTEK.L
Healthcare	87.3%	100.0%
Basic Materials	7.6%	-
Consumer Defensive	5.1%	-
Communication Services	-	-
Consumer Cyclical	-	-
Energy	-	-
Financial Services	-	-
Industrials	-	-
Real Estate	-	-
Technology	-	-
Utilities	-	-

Return for Risk

WBIO.L vs. BTEK.L — Risk / Return Rank

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

WBIO.L

WBIO.L Risk / Return Rank: 61
WBIO.L Sharpe Ratio Rank: 57
WBIO.L Sortino Ratio Rank: 55
WBIO.L Omega Ratio Rank: 51
WBIO.L Calmar Ratio Rank: 83
WBIO.L Martin Ratio Rank: 59

BTEK.L

BTEK.L Risk / Return Rank: 76
BTEK.L Sharpe Ratio Rank: 70
BTEK.L Sortino Ratio Rank: 70
BTEK.L Omega Ratio Rank: 63
BTEK.L Calmar Ratio Rank: 92
BTEK.L Martin Ratio Rank: 85

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.

WBIO.L vs. BTEK.L - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for WisdomTree BioRevolution UCITS ETF USD Acc (WBIO.L) and iShares Nasdaq US Biotechnology UCITS ETF (BTEK.L). 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.

	WBIO.L	BTEK.L	Difference
Sharpe ratio: Return per unit of total volatility	1.91	2.24	-0.33
Sortino ratio: Return per unit of downside risk	2.63	3.13	-0.50
Omega ratio: Gain probability vs. loss probability	1.31	1.38	-0.06
Calmar ratio: Return relative to maximum drawdown	4.40	6.23	-1.83
Martin ratio: Return relative to average drawdown	10.38	17.55	-7.17
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

WBIO.L vs. BTEK.L - Sharpe Ratio Comparison

The current WBIO.L Sharpe Ratio is 1.91, which is comparable to the BTEK.L Sharpe Ratio of 2.24. The chart below compares the historical Sharpe Ratios of WBIO.L and BTEK.L, 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

	WBIO.L	BTEK.L	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.91	2.24	-0.33
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	0.29	—
Sharpe Ratio (All Time) Calculated using the full available price history	-0.19	0.31	-0.50

Drawdowns

WBIO.L vs. BTEK.L - Drawdown Comparison

The maximum WBIO.L drawdown since its inception was -51.13%, which is greater than BTEK.L's maximum drawdown of -30.86%. Use the drawdown chart below to compare losses from any high point for WBIO.L and BTEK.L.

Drawdown Indicators

	WBIO.L	BTEK.L	Difference
Max Drawdown Largest peak-to-trough decline	-51.13%	-30.86%	-20.27%
Max Drawdown (1Y) Largest decline over 1 year	-11.50%	-6.89%	-4.61%
Max Drawdown (3Y) Largest decline over 3 years	-39.34%	-26.34%	-13.00%
Max Drawdown (5Y) Largest decline over 5 years	—	-30.86%	—
Current Drawdown Current decline from peak	-18.76%	-1.86%	-16.90%
Average Drawdown Average peak-to-trough decline	-26.35%	-10.04%	-16.31%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.89%	2.45%	+2.44%

Volatility

WBIO.L vs. BTEK.L - Volatility Comparison

WisdomTree BioRevolution UCITS ETF USD Acc (WBIO.L) and iShares Nasdaq US Biotechnology UCITS ETF (BTEK.L) have volatilities of 6.84% and 6.91%, respectively, indicating that both stocks experience similar levels of price fluctuations. This suggests that the risk associated with both stocks, as measured by volatility, is nearly the same. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	WBIO.L	BTEK.L	Difference
Volatility (1M) Calculated over the trailing 1-month period	6.84%	6.91%	-0.07%
Volatility (6M) Calculated over the trailing 6-month period	17.06%	14.67%	+2.39%
Volatility (1Y) Calculated over the trailing 1-year period	26.57%	19.14%	+7.43%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	23.70%	20.08%	+3.62%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	23.70%	21.71%	+1.99%

WBIO.L vs. BTEK.L - Expense Ratio Comparison

WBIO.L has a 0.45% expense ratio, which is higher than BTEK.L's 0.35% expense ratio.

Dividends

WBIO.L vs. BTEK.L - Dividend Comparison

Neither WBIO.L nor BTEK.L has paid dividends to shareholders.

Tickers have no history of dividend payments

Frequently Asked Questions

Can I hold both WBIO.L and BTEK.L in my portfolio?

WBIO.L and BTEK.L have a correlation of 0.83, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, WBIO.L or BTEK.L?

On fees, BTEK.L is cheaper at 0.35% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, WBIO.L or BTEK.L?

BTEK.L is cheaper with a 0.35% expense ratio, compared with 0.45% for WBIO.L.

What is the main difference between WBIO.L and BTEK.L?

Both ETFs track NASDAQ Biotechnology TR USD. They also come from different issuers: WisdomTree and iShares. Their fees differ too: 0.45% for WBIO.L and 0.35% for BTEK.L.