IS20.DE vs. UBU9.DE

Last updated Jun 5, 2026

IS20.DE (iShares S&P 500 Top 20 UCITS ETF USD Acc) and UBU9.DE (UBS Core S&P 500 UCITS ETF USD dis) are both S&P 500 funds - IS20.DE tracks the S&P 500 Top 20 Index while UBU9.DE tracks the S&P 500. Both are passively managed. Over the past year, IS20.DE returned 30.08% vs 25.49% for UBU9.DE. Their correlation of 0.91 suggests significant overlap in exposure. IS20.DE charges 0.10%/yr vs 0.03%/yr for UBU9.DE.

Performance

IS20.DE vs. UBU9.DE - Performance Comparison

The chart below illustrates the hypothetical performance of a €10,000 investment in iShares S&P 500 Top 20 UCITS ETF USD Acc (IS20.DE) and UBS Core S&P 500 UCITS ETF USD dis (UBU9.DE). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, IS20.DE achieves a 9.38% return, which is significantly lower than UBU9.DE's 11.29% return.

IS20.DE

• 1D: -0.38%
• 1M: 4.82%
• YTD: 9.38%
• 6M: 8.62%
• 1Y: 30.08%
• 3Y*: —
• 5Y*: —
• 10Y*: —

UBU9.DE

• 1D: -0.13%
• 1M: 5.22%
• YTD: 11.29%
• 6M: 11.31%
• 1Y: 25.49%
• 3Y*: 18.75%
• 5Y*: 14.63%
• 10Y*: 14.73%

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

IS20.DE vs. UBU9.DE - Yearly Performance Comparison

	2026 (YTD)	2025	2024
IS20.DE iShares S&P 500 Top 20 UCITS ETF USD Acc	9.38%	6.77%	6.20%
UBU9.DE UBS Core S&P 500 UCITS ETF USD dis	11.29%	4.68%	1.80%

Correlation

The correlation between IS20.DE and UBU9.DE is 0.90, 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	0.90
Correlation (All Time) Calculated using the full available price history since Nov 18, 2024	0.91

The correlation between IS20.DE and UBU9.DE has been stable across timeframes, ranging from 0.90 to 0.91 - a consistent structural relationship.

Return for Risk

IS20.DE vs. UBU9.DE — Risk / Return Rank

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

IS20.DE

IS20.DE Risk / Return Rank: 55
IS20.DE Sharpe Ratio Rank: 61
IS20.DE Sortino Ratio Rank: 60
IS20.DE Omega Ratio Rank: 59
IS20.DE Calmar Ratio Rank: 48
IS20.DE Martin Ratio Rank: 45

UBU9.DE

UBU9.DE Risk / Return Rank: 69
UBU9.DE Sharpe Ratio Rank: 68
UBU9.DE Sortino Ratio Rank: 66
UBU9.DE Omega Ratio Rank: 69
UBU9.DE Calmar Ratio Rank: 71
UBU9.DE Martin Ratio Rank: 69

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.

IS20.DE vs. UBU9.DE - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares S&P 500 Top 20 UCITS ETF USD Acc (IS20.DE) and UBS Core S&P 500 UCITS ETF USD dis (UBU9.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.

	IS20.DE	UBU9.DE	Difference
Sharpe ratio: Return per unit of total volatility	2.02	2.20	-0.18
Sortino ratio: Return per unit of downside risk	2.77	2.99	-0.22
Omega ratio: Gain probability vs. loss probability	1.35	1.41	-0.05
Calmar ratio: Return relative to maximum drawdown	2.35	3.53	-1.18
Martin ratio: Return relative to average drawdown	7.30	12.53	-5.23
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

IS20.DE vs. UBU9.DE - Sharpe Ratio Comparison

The current IS20.DE Sharpe Ratio is 2.02, which is comparable to the UBU9.DE Sharpe Ratio of 2.20. The chart below compares the historical Sharpe Ratios of IS20.DE and UBU9.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

	IS20.DE	UBU9.DE	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.02	2.20	-0.18
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	0.95	—
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	—	0.91	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.77	0.94	-0.17

Drawdowns

IS20.DE vs. UBU9.DE - Drawdown Comparison

The maximum IS20.DE drawdown since its inception was -26.30%, smaller than the maximum UBU9.DE drawdown of -33.82%. Use the drawdown chart below to compare losses from any high point for IS20.DE and UBU9.DE.

Drawdown Indicators

	IS20.DE	UBU9.DE	Difference
Max Drawdown Largest peak-to-trough decline	-26.30%	-33.82%	+7.52%
Max Drawdown (1Y) Largest decline over 1 year	-12.73%	-7.19%	-5.54%
Max Drawdown (3Y) Largest decline over 3 years	—	-23.30%	—
Max Drawdown (5Y) Largest decline over 5 years	—	-23.30%	—
Max Drawdown (10Y) Largest decline over 10 years	—	-33.82%	—
Current Drawdown Current decline from peak	-1.60%	-0.45%	-1.15%
Average Drawdown Average peak-to-trough decline	-6.16%	-4.01%	-2.15%
Ulcer Index Depth and duration of drawdowns from previous peaks	4.11%	2.03%	+2.08%

Volatility

IS20.DE vs. UBU9.DE - Volatility Comparison

iShares S&P 500 Top 20 UCITS ETF USD Acc (IS20.DE) has a higher volatility of 3.65% compared to UBS Core S&P 500 UCITS ETF USD dis (UBU9.DE) at 2.66%. This indicates that IS20.DE's price experiences larger fluctuations and is considered to be riskier than UBU9.DE based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	IS20.DE	UBU9.DE	Difference
Volatility (1M) Calculated over the trailing 1-month period	3.65%	2.66%	+0.99%
Volatility (6M) Calculated over the trailing 6-month period	10.03%	7.60%	+2.43%
Volatility (1Y) Calculated over the trailing 1-year period	14.81%	11.55%	+3.26%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	19.57%	15.21%	+4.36%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	19.57%	16.10%	+3.47%

IS20.DE vs. UBU9.DE - Expense Ratio Comparison

IS20.DE has a 0.10% expense ratio, which is higher than UBU9.DE's 0.03% expense ratio. However, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

IS20.DE vs. UBU9.DE - Dividend Comparison

IS20.DE has not paid dividends to shareholders, while UBU9.DE's dividend yield for the trailing twelve months is around 0.80%.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
IS20.DE iShares S&P 500 Top 20 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%
UBU9.DE UBS Core S&P 500 UCITS ETF USD dis	0.80%	0.90%	0.88%	1.05%	1.22%	0.75%	1.23%	1.21%	1.30%	1.35%	1.51%	1.38%

Frequently Asked Questions

Can I hold both IS20.DE and UBU9.DE in my portfolio?

With a correlation of 0.90, IS20.DE and UBU9.DE move almost identically. Holding both adds very little diversification - you're essentially doubling your position in the same market segment. Choosing one is usually more capital-efficient.

Which ETF is better, IS20.DE or UBU9.DE?

On fees, UBU9.DE is cheaper at 0.03% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, IS20.DE or UBU9.DE?

UBU9.DE is cheaper with a 0.03% expense ratio, compared with 0.10% for IS20.DE.

What is the main difference between IS20.DE and UBU9.DE?

IS20.DE tracks S&P 500 Top 20 Index, while UBU9.DE tracks S&P 500. They also come from different issuers: iShares and UBS. Their fees differ too: 0.10% for IS20.DE and 0.03% for UBU9.DE.