PR1T.L vs. ERNS.L
PR1T.L (Amundi Prime US Treasury Bond 0-1 Y UCITS ETF DR USD (C)) and ERNS.L (iShares £ Ultrashort Bond UCITS ETF GBP (Dist)) are both exchange-traded funds - PR1T.L is a Government Bonds fund tracking the Solactive US Treasury 0-1 Year Bond Index, while ERNS.L is a Ultrashort Bond fund actively managed by iShares. PR1T.L is passively managed, while ERNS.L is actively managed. Over the past 5 years, PR1T.L returned 3.24%/yr vs 2.53%/yr for ERNS.L. At a 0.11 correlation, their price movements are largely independent. PR1T.L charges 0.05%/yr vs 0.09%/yr for ERNS.L.
Performance
PR1T.L vs. ERNS.L - Performance Comparison
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Different Trading Currencies
PR1T.L is traded in USD, while ERNS.L is traded in GBP. To make them comparable, the ERNS.L values have been converted to USD using the latest available exchange rates.
Returns By Period
In the year-to-date period, PR1T.L achieves a 1.46% return, which is significantly higher than ERNS.L's 1.34% return.
PR1T.L
- 1D
- 0.06%
- 1M
- 0.28%
- YTD
- 1.46%
- 6M
- 1.75%
- 1Y
- 3.94%
- 3Y*
- 4.66%
- 5Y*
- 3.24%
- 10Y*
- —
ERNS.L
- 1D
- 0.11%
- 1M
- -0.49%
- YTD
- 1.34%
- 6M
- 2.76%
- 1Y
- 3.45%
- 3Y*
- 7.82%
- 5Y*
- 2.53%
- 10Y*
- 1.46%
PR1T.L vs. ERNS.L - Yearly Performance Comparison
| 2026 (YTD) | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | |
|---|---|---|---|---|---|---|---|
PR1T.L Amundi Prime US Treasury Bond 0-1 Y UCITS ETF DR USD (C) | 1.46% | 4.22% | 5.20% | 4.83% | 0.61% | 0.09% | -0.07% |
ERNS.L iShares £ Ultrashort Bond UCITS ETF GBP (Dist) | 1.34% | 12.76% | 3.78% | 10.28% | -9.32% | -0.78% | 7.29% |
Correlation
The correlation between PR1T.L and ERNS.L is 0.10, meaning there is essentially no relationship between their price movements. Each responds to its own set of market drivers, making them strong candidates for combining in a diversified portfolio.
| Correlation | |
|---|---|
Correlation (1Y) Calculated over the trailing 1-year period | 0.10 |
Correlation (3Y) Calculated over the trailing 3-year period | 0.14 |
Correlation (5Y) Calculated over the trailing 5-year period | 0.14 |
Correlation (All Time) Calculated using the full available price history since Sep 23, 2020 | 0.11 |
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Return for Risk
PR1T.L vs. ERNS.L — Risk / Return Rank
PR1T.L
ERNS.L
PR1T.L vs. ERNS.L - Risk-Adjusted Trends Comparison
This table presents a comparison of risk-adjusted performance metrics for Amundi Prime US Treasury Bond 0-1 Y UCITS ETF DR USD (C) (PR1T.L) and iShares £ Ultrashort Bond UCITS ETF GBP (Dist) (ERNS.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.
| PR1T.L | ERNS.L | Difference | |
|---|---|---|---|
| Sharpe ratioReturn per unit of total volatility | +12.44 | ||
| Sortino ratioReturn per unit of downside risk | +35.62 | ||
| Omega ratioGain probability vs. loss probability | 9.54 | 1.09 | +8.45 |
| Calmar ratioReturn relative to maximum drawdown | 68.61 | 0.83 | +67.77 |
| Martin ratioReturn relative to average drawdown | 521.85 | 1.86 | +519.99 |
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month. | |||
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Sharpe Ratios by Period
| PR1T.L | ERNS.L | Difference | |
|---|---|---|---|
Sharpe Ratio (1Y)Calculated over the trailing 1-year period | 12.95 | 0.51 | +12.44 |
Sharpe Ratio (5Y)Calculated over the trailing 5-year period | 8.38 | 0.29 | +8.08 |
Sharpe Ratio (10Y)Calculated over the trailing 10-year period | — | 0.15 | — |
Sharpe Ratio (All Time)Calculated using the full available price history | 7.41 | 0.06 | +7.35 |
Drawdowns
PR1T.L vs. ERNS.L - Drawdown Comparison
The maximum PR1T.L drawdown since its inception was -0.56%, smaller than the maximum ERNS.L drawdown of -34.17%. Use the drawdown chart below to compare losses from any high point for PR1T.L and ERNS.L.
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Drawdown Indicators
| PR1T.L | ERNS.L | Difference | |
|---|---|---|---|
Max DrawdownLargest peak-to-trough decline | -0.56% | -34.17% | +33.61% |
Max Drawdown (1Y)Largest decline over 1 year | -0.06% | -4.13% | +4.07% |
Max Drawdown (3Y)Largest decline over 3 years | -0.06% | -7.89% | +7.83% |
Max Drawdown (5Y)Largest decline over 5 years | -0.56% | -24.43% | +23.87% |
Max Drawdown (10Y)Largest decline over 10 years | — | -24.90% | — |
Current DrawdownCurrent decline from peak | 0.00% | -1.54% | +1.54% |
Average DrawdownAverage peak-to-trough decline | -0.05% | -16.12% | +16.07% |
Ulcer IndexDepth and duration of drawdowns from previous peaks | 0.01% | 1.85% | -1.84% |
Volatility
PR1T.L vs. ERNS.L - Volatility Comparison
The current volatility for Amundi Prime US Treasury Bond 0-1 Y UCITS ETF DR USD (C) (PR1T.L) is 0.09%, while iShares £ Ultrashort Bond UCITS ETF GBP (Dist) (ERNS.L) has a volatility of 1.95%. This indicates that PR1T.L experiences smaller price fluctuations and is considered to be less risky than ERNS.L based on this measure. The chart below showcases a comparison of their rolling one-month volatility.
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Volatility by Period
| PR1T.L | ERNS.L | Difference | |
|---|---|---|---|
Volatility (1M)Calculated over the trailing 1-month period | 0.09% | 1.95% | -1.86% |
Volatility (6M)Calculated over the trailing 6-month period | 0.21% | 5.00% | -4.79% |
Volatility (1Y)Calculated over the trailing 1-year period | 0.30% | 6.73% | -6.43% |
Volatility (5Y)Calculated over the trailing 5-year period, annualized | 0.39% | 8.62% | -8.23% |
Volatility (10Y)Calculated over the trailing 10-year period, annualized | 0.38% | 9.41% | -9.03% |
PR1T.L vs. ERNS.L - Expense Ratio Comparison
PR1T.L has a 0.05% expense ratio, which is lower than ERNS.L's 0.09% 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
PR1T.L vs. ERNS.L - Dividend Comparison
PR1T.L has not paid dividends to shareholders, while ERNS.L's dividend yield for the trailing twelve months is around 5.65%.
| Position | TTM | 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
ERNS.L iShares £ Ultrashort Bond UCITS ETF GBP (Dist) | 5.65% | 4.65% | 5.42% | 4.54% | 1.14% | 0.28% | 0.75% | 1.04% | 0.74% | 0.52% | 0.81% | 0.72% |
PR1T.L Amundi Prime US Treasury Bond 0-1 Y UCITS ETF DR USD (C) | 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
PR1T.L and ERNS.L have a correlation of 0.10, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.
On fees, PR1T.L is cheaper at 0.05% per year. The better choice depends on whether you care most about return, fees, risk, or income.
PR1T.L is cheaper with a 0.05% expense ratio, compared with 0.09% for ERNS.L.
PR1T.L is categorized as Government Bonds, while ERNS.L is Ultrashort Bond. They also come from different issuers: Amundi and iShares. Their fees differ too: 0.05% for PR1T.L and 0.09% for ERNS.L.
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