ERN1.L vs. IB01.L

Last updated Apr 2, 2026

Compare and contrast key facts about iShares € Ultrashort Bond UCITS ETF (ERN1.L) and iShares USD Treasury Bond 0-1yr UCITS ETF (Acc) (IB01.L).

ERN1.L and IB01.L are both exchange-traded funds (ETFs), meaning they are traded on stock exchanges and can be bought and sold throughout the day. ERN1.L is a passively managed fund by iShares that tracks the performance of the Markit iBoxx EUR Liquid Investment Grade Ultrashort Index. It was launched on Oct 16, 2013. IB01.L is a passively managed fund by iShares that tracks the performance of the Bloomberg US Government TR USD. It was launched on Feb 20, 2019. Both ERN1.L and IB01.L are passive ETFs, meaning that they are not actively managed but aim to replicate the performance of the underlying index as closely as possible.

Performance

ERN1.L vs. IB01.L - Performance Comparison

The chart below illustrates the hypothetical performance of a £10,000 investment in iShares € Ultrashort Bond UCITS ETF (ERN1.L) and iShares USD Treasury Bond 0-1yr UCITS ETF (Acc) (IB01.L). The values are adjusted to include any dividend payments, if applicable.

ERN1.L vs. IB01.L - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019
ERN1.L iShares € Ultrashort Bond UCITS ETF	-0.37%	926.99%	26.16%	-339.28%	5.26%	-6.83%	5.64%	-1.90%
IB01.L iShares USD Treasury Bond 0-1yr UCITS ETF (Acc)	2.52%	-3.10%	7.09%	-0.32%	13.10%	0.95%	-2.08%	0.41%

Different Trading Currencies

ERN1.L is traded in GBP, while IB01.L is traded in USD. To make them comparable, the IB01.L values have been converted to GBP using the latest available exchange rates.

Returns By Period

In the year-to-date period, ERN1.L achieves a -0.37% return, which is significantly lower than IB01.L's 2.52% return.

ERN1.L

• 1D: -0.09%
• 1M: -0.76%
• YTD: -0.37%
• 6M: -599.07%
• 1Y: 908.00%
• 3Y*: —
• 5Y*: —
• 10Y*: —

IB01.L

• 1D: -0.16%
• 1M: 1.45%
• YTD: 2.52%
• 6M: 3.61%
• 1Y: 1.50%
• 3Y*: 2.27%
• 5Y*: 4.15%
• 10Y*: —

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

ERN1.L vs. IB01.L - Expense Ratio Comparison

ERN1.L has a 0.09% expense ratio, which is higher than IB01.L's 0.07% 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%.

ERN1.L

iShares € Ultrashort Bond UCITS ETF

IB01.L

iShares USD Treasury Bond 0-1yr UCITS ETF (Acc)

Return for Risk

ERN1.L vs. IB01.L — Risk / Return Rank

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

ERN1.L

ERN1.L Risk / Return Rank: 32
ERN1.L Sharpe Ratio Rank: 73
ERN1.L Sortino Ratio Rank: 1
ERN1.L Omega Ratio Rank: 0
ERN1.L Calmar Ratio Rank: 55
ERN1.L Martin Ratio Rank: 31

IB01.L

IB01.L Risk / Return Rank: 100
IB01.L Sharpe Ratio Rank: 100
IB01.L Sortino Ratio Rank: 100
IB01.L Omega Ratio Rank: 100
IB01.L Calmar Ratio Rank: 100
IB01.L Martin Ratio Rank: 100

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.

ERN1.L vs. IB01.L - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares € Ultrashort Bond UCITS ETF (ERN1.L) and iShares USD Treasury Bond 0-1yr UCITS ETF (Acc) (IB01.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.

	ERN1.L	IB01.L	Difference
Sharpe ratio Return per unit of total volatility	1.36	0.21	+1.15
Sortino ratio Return per unit of downside risk	-1.33	0.35	-1.67
Omega ratio Gain probability vs. loss probability	0.03	1.04	-1.01
Calmar ratio Return relative to maximum drawdown	1.52	0.32	+1.20
Martin ratio Return relative to average drawdown	2.78	0.60	+2.17
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

ERN1.L vs. IB01.L - Sharpe Ratio Comparison

The current ERN1.L Sharpe Ratio is 1.36, which is higher than the IB01.L Sharpe Ratio of 0.21. The chart below compares the historical Sharpe Ratios of ERN1.L and IB01.L, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	ERN1.L	IB01.L	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	1.36	0.21	+1.15
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	—	0.49	—
Sharpe Ratio (All Time) Calculated using the full available price history	—	0.28	—

Correlation

The correlation between ERN1.L and IB01.L is 0.41, which is considered to be moderate. This suggests that the two assets have some degree of positive relationship in their price movements. Moderate correlation can be acceptable for portfolio diversification, offering a balance between risk and potential returns.

Dividends

ERN1.L vs. IB01.L - Dividend Comparison

ERN1.L's dividend yield for the trailing twelve months is around 271.43%, while IB01.L has not paid dividends to shareholders.

	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
ERN1.L iShares € Ultrashort Bond UCITS ETF	271.43%	270.43%	382.39%	214.76%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	3.00%	13.08%
IB01.L iShares USD Treasury Bond 0-1yr 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%

Drawdowns

ERN1.L vs. IB01.L - Drawdown Comparison

The maximum ERN1.L drawdown since its inception was -596.86%, which is greater than IB01.L's maximum drawdown of -19.26%. Use the drawdown chart below to compare losses from any high point for ERN1.L and IB01.L.

Drawdown Indicators

	ERN1.L	IB01.L	Difference
Max Drawdown Largest peak-to-trough decline	-596.86%	-0.91%	-595.95%
Max Drawdown (1Y) Largest decline over 1 year	-297.73%	-0.09%	-297.64%
Max Drawdown (5Y) Largest decline over 5 years	-596.86%	-0.29%	-596.57%
Max Drawdown (10Y) Largest decline over 10 years	-596.86%	—	—
Current Drawdown Current decline from peak	-590.68%	0.00%	-590.68%
Average Drawdown Average peak-to-trough decline	-36.27%	-0.08%	-36.19%
Ulcer Index Depth and duration of drawdowns from previous peaks	326.57%	0.01%	+326.56%

Volatility

ERN1.L vs. IB01.L - Volatility Comparison

The current volatility for iShares € Ultrashort Bond UCITS ETF (ERN1.L) is 1.28%, while iShares USD Treasury Bond 0-1yr UCITS ETF (Acc) (IB01.L) has a volatility of 2.57%. This indicates that ERN1.L experiences smaller price fluctuations and is considered to be less risky than IB01.L based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	ERN1.L	IB01.L	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.28%	2.57%	-1.29%
Volatility (6M) Calculated over the trailing 6-month period	3.06%	4.81%	-1.75%
Volatility (1Y) Calculated over the trailing 1-year period	661.69%	7.24%	+654.45%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	344.47%	8.47%	+336.00%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	243.54%	8.86%	+234.68%