BBCK.DE vs. IUSN.DE

Last updated Jun 5, 2026

BBCK.DE (Invesco Global Buyback Achievers UCITS ETF) and IUSN.DE (iShares MSCI World Small Cap UCITS ETF) are both Global Equities funds - BBCK.DE tracks the Nasdaq Global Buyback Achievers while IUSN.DE tracks the MSCI World Small Cap. Both are passively managed. Over the past 5 years, BBCK.DE returned 10.80%/yr vs 8.07%/yr for IUSN.DE. A 0.70 correlation means they provide meaningful diversification when combined. BBCK.DE charges 0.39%/yr vs 0.35%/yr for IUSN.DE.

Performance

BBCK.DE vs. IUSN.DE - Performance Comparison

The chart below illustrates the hypothetical performance of a €10,000 investment in Invesco Global Buyback Achievers UCITS ETF (BBCK.DE) and iShares MSCI World Small Cap UCITS ETF (IUSN.DE). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, BBCK.DE achieves a 7.16% return, which is significantly lower than IUSN.DE's 14.82% return.

BBCK.DE

• 1D: 0.98%
• 1M: 1.42%
• YTD: 7.16%
• 6M: 8.41%
• 1Y: 21.98%
• 3Y*: 18.50%
• 5Y*: 10.80%
• 10Y*: 11.96%

IUSN.DE

• 1D: 0.51%
• 1M: 3.94%
• YTD: 14.82%
• 6M: 15.82%
• 1Y: 30.05%
• 3Y*: 14.95%
• 5Y*: 8.07%
• 10Y*: —

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

BBCK.DE vs. IUSN.DE - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018
BBCK.DE Invesco Global Buyback Achievers UCITS ETF	7.16%	16.70%	19.10%	11.74%	-6.44%	30.65%	1.65%	35.47%	-8.17%
IUSN.DE iShares MSCI World Small Cap UCITS ETF	14.82%	7.82%	13.17%	13.11%	-13.82%	25.28%	5.33%	29.05%	-8.27%

Correlation

The correlation between BBCK.DE and IUSN.DE is 0.74, 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	0.74
Correlation (3Y) Calculated over the trailing 3-year period	0.77
Correlation (5Y) Calculated over the trailing 5-year period	0.79
Correlation (All Time) Calculated using the full available price history since Apr 26, 2018	0.70

The correlation between BBCK.DE and IUSN.DE has been stable across timeframes, ranging from 0.70 to 0.79 - a consistent structural relationship.

Return for Risk

BBCK.DE vs. IUSN.DE — Risk / Return Rank

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

BBCK.DE

BBCK.DE Risk / Return Rank: 66
BBCK.DE Sharpe Ratio Rank: 56
BBCK.DE Sortino Ratio Rank: 54
BBCK.DE Omega Ratio Rank: 55
BBCK.DE Calmar Ratio Rank: 87
BBCK.DE Martin Ratio Rank: 77

IUSN.DE

IUSN.DE Risk / Return Rank: 73
IUSN.DE Sharpe Ratio Rank: 67
IUSN.DE Sortino Ratio Rank: 69
IUSN.DE Omega Ratio Rank: 66
IUSN.DE Calmar Ratio Rank: 81
IUSN.DE Martin Ratio Rank: 80

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.

BBCK.DE vs. IUSN.DE - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Invesco Global Buyback Achievers UCITS ETF (BBCK.DE) and iShares MSCI World Small Cap UCITS ETF (IUSN.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.

	BBCK.DE	IUSN.DE	Difference
Sharpe ratio: Return per unit of total volatility	1.88	2.19	-0.31
Sortino ratio: Return per unit of downside risk	2.56	3.12	-0.56
Omega ratio: Gain probability vs. loss probability	1.34	1.39	-0.05
Calmar ratio: Return relative to maximum drawdown	4.97	4.20	+0.77
Martin ratio: Return relative to average drawdown	14.50	15.62	-1.12
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

BBCK.DE vs. IUSN.DE - Sharpe Ratio Comparison

The current BBCK.DE Sharpe Ratio is 1.88, which is comparable to the IUSN.DE Sharpe Ratio of 2.19. The chart below compares the historical Sharpe Ratios of BBCK.DE and IUSN.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

	BBCK.DE	IUSN.DE	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.88	2.19	-0.31
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.75	0.48	+0.27
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.91	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.86	0.53	+0.32

Drawdowns

BBCK.DE vs. IUSN.DE - Drawdown Comparison

The maximum BBCK.DE drawdown since its inception was -33.23%, smaller than the maximum IUSN.DE drawdown of -40.23%. Use the drawdown chart below to compare losses from any high point for BBCK.DE and IUSN.DE.

Drawdown Indicators

	BBCK.DE	IUSN.DE	Difference
Max Drawdown Largest peak-to-trough decline	-33.23%	-40.23%	+7.00%
Max Drawdown (1Y) Largest decline over 1 year	-4.40%	-7.12%	+2.72%
Max Drawdown (3Y) Largest decline over 3 years	-21.54%	-24.32%	+2.78%
Max Drawdown (5Y) Largest decline over 5 years	-21.54%	-24.32%	+2.78%
Max Drawdown (10Y) Largest decline over 10 years	-33.23%	—	—
Current Drawdown Current decline from peak	0.00%	0.00%	0.00%
Average Drawdown Average peak-to-trough decline	-4.61%	-7.03%	+2.42%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.51%	1.92%	-0.41%

Volatility

BBCK.DE vs. IUSN.DE - Volatility Comparison

The current volatility for Invesco Global Buyback Achievers UCITS ETF (BBCK.DE) is 2.79%, while iShares MSCI World Small Cap UCITS ETF (IUSN.DE) has a volatility of 3.46%. This indicates that BBCK.DE experiences smaller price fluctuations and is considered to be less risky than IUSN.DE based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	BBCK.DE	IUSN.DE	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.79%	3.46%	-0.67%
Volatility (6M) Calculated over the trailing 6-month period	7.81%	9.56%	-1.75%
Volatility (1Y) Calculated over the trailing 1-year period	11.63%	13.64%	-2.01%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	15.39%	16.53%	-1.14%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	18.85%	18.31%	+0.54%

BBCK.DE vs. IUSN.DE - Expense Ratio Comparison

BBCK.DE has a 0.39% expense ratio, which is higher than IUSN.DE's 0.35% expense ratio.

Dividends

BBCK.DE vs. IUSN.DE - Dividend Comparison

BBCK.DE's dividend yield for the trailing twelve months is around 1.69%, while IUSN.DE has not paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
BBCK.DE Invesco Global Buyback Achievers UCITS ETF	1.69%	1.88%	1.79%	1.75%	1.97%	1.18%	1.61%	1.84%	1.35%	1.18%	1.63%	1.28%
IUSN.DE iShares MSCI World Small Cap UCITS ETF	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 BBCK.DE and IUSN.DE in my portfolio?

BBCK.DE and IUSN.DE have a correlation of 0.74, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, BBCK.DE or IUSN.DE?

On fees, IUSN.DE 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, BBCK.DE or IUSN.DE?

IUSN.DE is cheaper with a 0.35% expense ratio, compared with 0.39% for BBCK.DE.

What is the main difference between BBCK.DE and IUSN.DE?

BBCK.DE tracks Nasdaq Global Buyback Achievers, while IUSN.DE tracks MSCI World Small Cap. They also come from different issuers: Invesco and iShares. Their fees differ too: 0.39% for BBCK.DE and 0.35% for IUSN.DE.