BUT.L vs. WSML.L

Last updated Jun 5, 2026

BUT.L (Brunner Investment Trust) is a stock, while WSML.L (iShares MSCI World Small Cap UCITS ETF USD (Acc)) is Global Equities fund tracking the MSCI World Small Cap Index. Over the past 5 years, BUT.L returned 10.60%/yr vs 8.23%/yr for WSML.L. At a 0.46 correlation, their price movements are largely independent.

Performance

BUT.L vs. WSML.L - Performance Comparison

The chart below illustrates the hypothetical performance of a £10,000 investment in Brunner Investment Trust (BUT.L) and iShares MSCI World Small Cap UCITS ETF USD (Acc) (WSML.L). The values are adjusted to include any dividend payments, if applicable.

Different Trading Currencies

BUT.L is traded in GBp, while WSML.L is traded in USD. To make them comparable, the WSML.L values have been converted to GBp using the latest available exchange rates.

Returns By Period

In the year-to-date period, BUT.L achieves a 3.93% return, which is significantly lower than WSML.L's 14.85% return.

BUT.L

• 1D: 0.14%
• 1M: -0.94%
• YTD: 3.93%
• 6M: 5.40%
• 1Y: 7.57%
• 3Y*: 13.58%
• 5Y*: 10.60%
• 10Y*: 13.36%

WSML.L

• 1D: 0.54%
• 1M: 4.19%
• YTD: 14.85%
• 6M: 14.71%
• 1Y: 33.63%
• 3Y*: 15.12%
• 5Y*: 8.23%
• 10Y*: —

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

BUT.L vs. WSML.L - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018
BUT.L Brunner Investment Trust	3.93%	-1.01%	24.71%	20.20%	-6.09%	31.65%	-3.13%	34.38%	-4.60%
WSML.L iShares MSCI World Small Cap UCITS ETF USD (Acc)	14.85%	11.40%	9.28%	11.21%	-8.94%	16.32%	13.07%	19.62%	-3.91%

Correlation

The correlation between BUT.L and WSML.L is 0.48, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.48
Correlation (3Y) Calculated over the trailing 3-year period	0.45
Correlation (5Y) Calculated over the trailing 5-year period	0.50
Correlation (All Time) Calculated using the full available price history since Apr 3, 2018	0.46

The correlation between BUT.L and WSML.L has been stable across timeframes, ranging from 0.45 to 0.50 - a consistent structural relationship.

Return for Risk

BUT.L vs. WSML.L — Risk / Return Rank

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

BUT.L

BUT.L Risk / Return Rank: 56
BUT.L Sharpe Ratio Rank: 60
BUT.L Sortino Ratio Rank: 51
BUT.L Omega Ratio Rank: 50
BUT.L Calmar Ratio Rank: 59
BUT.L Martin Ratio Rank: 63

WSML.L

WSML.L Risk / Return Rank: 70
WSML.L Sharpe Ratio Rank: 67
WSML.L Sortino Ratio Rank: 74
WSML.L Omega Ratio Rank: 64
WSML.L Calmar Ratio Rank: 72
WSML.L Martin Ratio Rank: 70

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.

BUT.L vs. WSML.L - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Brunner Investment Trust (BUT.L) and iShares MSCI World Small Cap UCITS ETF USD (Acc) (WSML.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.

	BUT.L	WSML.L	Difference
Sharpe ratio: Return per unit of total volatility	0.55	2.40	-1.85
Sortino ratio: Return per unit of downside risk	0.86	3.33	-2.47
Omega ratio: Gain probability vs. loss probability	1.11	1.43	-0.32
Calmar ratio: Return relative to maximum drawdown	0.80	4.23	-3.43
Martin ratio: Return relative to average drawdown	2.46	15.86	-13.40
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

BUT.L vs. WSML.L - Sharpe Ratio Comparison

The current BUT.L Sharpe Ratio is 0.55, which is lower than the WSML.L Sharpe Ratio of 2.40. The chart below compares the historical Sharpe Ratios of BUT.L and WSML.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

	BUT.L	WSML.L	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.55	2.40	-1.85
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.56	0.49	+0.07
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.67	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.46	0.54	-0.08

Drawdowns

BUT.L vs. WSML.L - Drawdown Comparison

The maximum BUT.L drawdown since its inception was -64.93%, which is greater than WSML.L's maximum drawdown of -33.63%. Use the drawdown chart below to compare losses from any high point for BUT.L and WSML.L.

Drawdown Indicators

	BUT.L	WSML.L	Difference
Max Drawdown Largest peak-to-trough decline	-64.93%	-33.63%	-31.30%
Max Drawdown (1Y) Largest decline over 1 year	-9.45%	-7.91%	-1.54%
Max Drawdown (3Y) Largest decline over 3 years	-24.93%	-21.49%	-3.44%
Max Drawdown (5Y) Largest decline over 5 years	-24.93%	-21.49%	-3.44%
Max Drawdown (10Y) Largest decline over 10 years	-37.37%	—	—
Current Drawdown Current decline from peak	-2.76%	0.00%	-2.76%
Average Drawdown Average peak-to-trough decline	-14.61%	-6.44%	-8.17%
Ulcer Index Depth and duration of drawdowns from previous peaks	3.07%	2.11%	+0.96%

Volatility

BUT.L vs. WSML.L - Volatility Comparison

The current volatility for Brunner Investment Trust (BUT.L) is 3.34%, while iShares MSCI World Small Cap UCITS ETF USD (Acc) (WSML.L) has a volatility of 4.08%. This indicates that BUT.L experiences smaller price fluctuations and is considered to be less risky than WSML.L based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BUT.L	WSML.L	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.34%	4.08%	-0.74%
Volatility (6M) Calculated over the trailing 6-month period	10.67%	10.73%	-0.06%
Volatility (1Y) Calculated over the trailing 1-year period	13.71%	13.96%	-0.25%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	18.89%	16.85%	+2.04%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	19.78%	18.19%	+1.59%

Dividends

BUT.L vs. WSML.L - Dividend Comparison

BUT.L's dividend yield for the trailing twelve months is around 1.69%, while WSML.L has not paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BUT.L Brunner Investment Trust	1.69%	1.73%	1.62%	1.89%	2.11%	1.82%	2.32%	2.19%	2.61%	2.12%	2.57%	2.87%
WSML.L iShares MSCI World Small Cap UCITS ETF USD (Acc)	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%

Frequently Asked Questions

Can I hold both BUT.L and WSML.L in my portfolio?

BUT.L and WSML.L have a correlation of 0.48, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.