UBU9.DE vs. WELE.DE

Last updated Jun 5, 2026

UBU9.DE (UBS Core S&P 500 UCITS ETF USD dis) and WELE.DE (Amundi S&P 500 Equal Weight ESG UCITS ETF Acc) are both S&P 500 funds - UBU9.DE tracks the S&P 500 while WELE.DE tracks the S&P 500 Equal Weight ESG Leaders Select. Both are passively managed. Over the past 3 years, UBU9.DE returned 18.75%/yr vs 11.24%/yr for WELE.DE. A 0.80 correlation means they provide meaningful diversification when combined. UBU9.DE charges 0.03%/yr vs 0.18%/yr for WELE.DE.

Performance

UBU9.DE vs. WELE.DE - Performance Comparison

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

Returns By Period

In the year-to-date period, UBU9.DE achieves a 11.29% return, which is significantly higher than WELE.DE's 8.45% return.

UBU9.DE

• 1D: -0.13%
• 1M: 4.33%
• YTD: 11.29%
• 6M: 10.76%
• 1Y: 25.48%
• 3Y*: 18.75%
• 5Y*: 14.63%
• 10Y*: 14.73%

WELE.DE

• 1D: 0.41%
• 1M: 3.64%
• YTD: 8.45%
• 6M: 9.05%
• 1Y: 18.12%
• 3Y*: 11.24%
• 5Y*: —
• 10Y*: —

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

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

	2026 (YTD)	2025	2024	2023	2022
UBU9.DE UBS Core S&P 500 UCITS ETF USD dis	11.29%	4.68%	32.18%	22.24%	1.06%
WELE.DE Amundi S&P 500 Equal Weight ESG UCITS ETF Acc	8.45%	0.70%	16.40%	10.64%	6.39%

Correlation

The correlation between UBU9.DE and WELE.DE is 0.67, 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	0.67
Correlation (3Y) Calculated over the trailing 3-year period	0.74
Correlation (All Time) Calculated using the full available price history since Jun 22, 2022	0.80

The correlation between UBU9.DE and WELE.DE shifts across timeframes, from 0.67 (1 year) to 0.80 (all time), reflecting how their relationship changes across market environments.

Return for Risk

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

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

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

WELE.DE

WELE.DE Risk / Return Rank: 50
WELE.DE Sharpe Ratio Rank: 46
WELE.DE Sortino Ratio Rank: 46
WELE.DE Omega Ratio Rank: 45
WELE.DE Calmar Ratio Rank: 59
WELE.DE Martin Ratio Rank: 54

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.

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

This table presents a comparison of risk-adjusted performance metrics for UBS Core S&P 500 UCITS ETF USD dis (UBU9.DE) and Amundi S&P 500 Equal Weight ESG UCITS ETF Acc (WELE.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.

	UBU9.DE	WELE.DE	Difference
Sharpe ratio: Return per unit of total volatility	2.20	1.59	+0.61
Sortino ratio: Return per unit of downside risk	2.99	2.28	+0.71
Omega ratio: Gain probability vs. loss probability	1.41	1.28	+0.12
Calmar ratio: Return relative to maximum drawdown	3.53	2.87	+0.66
Martin ratio: Return relative to average drawdown	12.53	9.27	+3.26
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

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

The current UBU9.DE Sharpe Ratio is 2.20, which is higher than the WELE.DE Sharpe Ratio of 1.59. The chart below compares the historical Sharpe Ratios of UBU9.DE and WELE.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

	UBU9.DE	WELE.DE	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	2.20	1.59	+0.61
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	0.94	0.74	+0.20

Drawdowns

UBU9.DE vs. WELE.DE - Drawdown Comparison

The maximum UBU9.DE drawdown since its inception was -33.82%, which is greater than WELE.DE's maximum drawdown of -23.73%. Use the drawdown chart below to compare losses from any high point for UBU9.DE and WELE.DE.

Drawdown Indicators

	UBU9.DE	WELE.DE	Difference
Max Drawdown Largest peak-to-trough decline	-33.82%	-23.73%	-10.09%
Max Drawdown (1Y) Largest decline over 1 year	-7.19%	-6.28%	-0.91%
Max Drawdown (3Y) Largest decline over 3 years	-23.30%	-23.73%	+0.43%
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	-0.45%	0.00%	-0.45%
Average Drawdown Average peak-to-trough decline	-4.01%	-5.63%	+1.62%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.03%	1.95%	+0.08%

Volatility

UBU9.DE vs. WELE.DE - Volatility Comparison

UBS Core S&P 500 UCITS ETF USD dis (UBU9.DE) has a higher volatility of 2.66% compared to Amundi S&P 500 Equal Weight ESG UCITS ETF Acc (WELE.DE) at 2.24%. This indicates that UBU9.DE's price experiences larger fluctuations and is considered to be riskier than WELE.DE based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	UBU9.DE	WELE.DE	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.66%	2.24%	+0.42%
Volatility (6M) Calculated over the trailing 6-month period	7.60%	7.47%	+0.13%
Volatility (1Y) Calculated over the trailing 1-year period	11.55%	11.35%	+0.20%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	15.21%	14.41%	+0.80%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	16.10%	14.41%	+1.69%

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

UBU9.DE has a 0.03% expense ratio, which is lower than WELE.DE's 0.18% expense ratio. Despite the difference, both funds are considered low-cost compared to the broader market, where average expense ratios usually range from 0.3% to 0.9%.

Dividends

UBU9.DE vs. WELE.DE - Dividend Comparison

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

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
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%
WELE.DE Amundi S&P 500 Equal Weight ESG UCITS ETF 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 UBU9.DE and WELE.DE in my portfolio?

UBU9.DE and WELE.DE have a correlation of 0.67, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

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

UBU9.DE is cheaper with a 0.03% expense ratio, compared with 0.18% for WELE.DE.

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

UBU9.DE tracks S&P 500, while WELE.DE tracks S&P 500 Equal Weight ESG Leaders Select. They also come from different issuers: UBS and Amundi. Their fees differ too: 0.03% for UBU9.DE and 0.18% for WELE.DE.