USTY.L vs. PR1T.L

Last updated Jun 5, 2026

USTY.L (SPDR Bloomberg US Treasury Bond UCITS ETF) and PR1T.L (Amundi Prime US Treasury Bond 0-1 Y UCITS ETF DR USD (C)) are both Government Bonds funds - USTY.L tracks the Bloomberg US Treasury Index while PR1T.L tracks the Solactive US Treasury 0-1 Year Bond Index. Both are passively managed. Over the past 5 years, USTY.L returned 1.37%/yr vs 4.36%/yr for PR1T.L. A 0.65 correlation means they provide meaningful diversification when combined. Both charge a 0.05% expense ratio.

Performance

USTY.L vs. PR1T.L - Performance Comparison

The chart below illustrates the hypothetical performance of a £10,000 investment in SPDR Bloomberg US Treasury Bond UCITS ETF (USTY.L) and Amundi Prime US Treasury Bond 0-1 Y UCITS ETF DR USD (C) (PR1T.L). The values are adjusted to include any dividend payments, if applicable.

Different Trading Currencies

USTY.L is traded in GBP, while PR1T.L is traded in USD. To make them comparable, the PR1T.L values have been converted to GBP using the latest available exchange rates.

Returns By Period

In the year-to-date period, USTY.L achieves a 0.66% return, which is significantly lower than PR1T.L's 1.87% return.

USTY.L

• 1D: 0.21%
• 1M: 1.14%
• YTD: 0.66%
• 6M: 0.16%
• 1Y: 6.01%
• 3Y*: 1.22%
• 5Y*: 1.37%
• 10Y*: 2.28%

PR1T.L

• 1D: 0.06%
• 1M: 1.20%
• YTD: 1.87%
• 6M: 1.05%
• 1Y: 4.95%
• 3Y*: 2.03%
• 5Y*: 4.36%
• 10Y*: —

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

USTY.L vs. PR1T.L - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020
USTY.L SPDR Bloomberg US Treasury Bond UCITS ETF	0.66%	0.10%	3.36%	-1.37%	-1.66%	-0.86%	-7.63%
PR1T.L Amundi Prime US Treasury Bond 0-1 Y UCITS ETF DR USD (C)	1.87%	-3.21%	7.04%	-0.41%	12.57%	1.04%	-6.84%

Correlation

The correlation between USTY.L and PR1T.L is 0.64, 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	0.64
Correlation (3Y) Calculated over the trailing 3-year period	0.61
Correlation (5Y) Calculated over the trailing 5-year period	0.63
Correlation (All Time) Calculated using the full available price history since Sep 23, 2020	0.65

The correlation between USTY.L and PR1T.L has been stable across timeframes, ranging from 0.61 to 0.65 - a consistent structural relationship.

Return for Risk

USTY.L vs. PR1T.L — Risk / Return Rank

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

USTY.L

USTY.L Risk / Return Rank: 25
USTY.L Sharpe Ratio Rank: 27
USTY.L Sortino Ratio Rank: 26
USTY.L Omega Ratio Rank: 26
USTY.L Calmar Ratio Rank: 24
USTY.L Martin Ratio Rank: 24

PR1T.L

PR1T.L Risk / Return Rank: 100
PR1T.L Sharpe Ratio Rank: 100
PR1T.L Sortino Ratio Rank: 100
PR1T.L Omega Ratio Rank: 100
PR1T.L Calmar Ratio Rank: 100
PR1T.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.

USTY.L vs. PR1T.L - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for SPDR Bloomberg US Treasury Bond UCITS ETF (USTY.L) and Amundi Prime US Treasury Bond 0-1 Y UCITS ETF DR USD (C) (PR1T.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.

	USTY.L	PR1T.L	Difference
Sharpe ratio: Return per unit of total volatility	0.94	0.75	+0.19
Sortino ratio: Return per unit of downside risk	1.40	1.11	+0.29
Omega ratio: Gain probability vs. loss probability	1.17	1.13	+0.04
Calmar ratio: Return relative to maximum drawdown	1.15	0.96	+0.19
Martin ratio: Return relative to average drawdown	3.15	2.61	+0.55
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

USTY.L vs. PR1T.L - Sharpe Ratio Comparison

The current USTY.L Sharpe Ratio is 0.94, which is comparable to the PR1T.L Sharpe Ratio of 0.75. The chart below compares the historical Sharpe Ratios of USTY.L and PR1T.L, 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

	USTY.L	PR1T.L	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.94	0.75	+0.19
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.16	0.52	-0.36
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.23	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.31	0.23	+0.09

Drawdowns

USTY.L vs. PR1T.L - Drawdown Comparison

The maximum USTY.L drawdown since its inception was -23.02%, which is greater than PR1T.L's maximum drawdown of -16.09%. Use the drawdown chart below to compare losses from any high point for USTY.L and PR1T.L.

Drawdown Indicators

	USTY.L	PR1T.L	Difference
Max Drawdown Largest peak-to-trough decline	-23.02%	-16.09%	-6.93%
Max Drawdown (1Y) Largest decline over 1 year	-5.20%	-5.15%	-0.05%
Max Drawdown (3Y) Largest decline over 3 years	-7.75%	-9.86%	+2.11%
Max Drawdown (5Y) Largest decline over 5 years	-16.04%	-16.09%	+0.05%
Max Drawdown (10Y) Largest decline over 10 years	-23.02%	—	—
Current Drawdown Current decline from peak	-15.58%	-6.37%	-9.21%
Average Drawdown Average peak-to-trough decline	-12.04%	-7.80%	-4.24%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.90%	1.89%	+0.01%

Volatility

USTY.L vs. PR1T.L - Volatility Comparison

SPDR Bloomberg US Treasury Bond UCITS ETF (USTY.L) has a higher volatility of 2.21% compared to Amundi Prime US Treasury Bond 0-1 Y UCITS ETF DR USD (C) (PR1T.L) at 1.76%. This indicates that USTY.L's price experiences larger fluctuations and is considered to be riskier than PR1T.L based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	USTY.L	PR1T.L	Difference
Volatility (1M) Calculated over the trailing 1-month period	2.21%	1.76%	+0.45%
Volatility (6M) Calculated over the trailing 6-month period	4.79%	4.96%	-0.17%
Volatility (1Y) Calculated over the trailing 1-year period	6.35%	6.58%	-0.23%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	8.77%	8.46%	+0.31%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	10.02%	8.34%	+1.68%

USTY.L vs. PR1T.L - Expense Ratio Comparison

Both USTY.L and PR1T.L have an expense ratio of 0.05%, making them cost-effective options compared to the broader market, where average expense ratios typically range from 0.3% to 0.9%.

Dividends

USTY.L vs. PR1T.L - Dividend Comparison

USTY.L's dividend yield for the trailing twelve months is around 4.87%, while PR1T.L has not paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016
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%
USTY.L SPDR Bloomberg US Treasury Bond UCITS ETF	4.87%	4.61%	3.81%	2.81%	1.57%	1.31%	2.49%	2.79%	2.11%	2.11%	1.66%

Frequently Asked Questions

Can I hold both USTY.L and PR1T.L in my portfolio?

USTY.L and PR1T.L have a correlation of 0.64, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, USTY.L or PR1T.L?

Both ETFs have the same 0.05% expense ratio. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, USTY.L or PR1T.L?

USTY.L and PR1T.L have the same expense ratio: 0.05% per year.

What is the main difference between USTY.L and PR1T.L?

USTY.L tracks Bloomberg US Treasury Index, while PR1T.L tracks Solactive US Treasury 0-1 Year Bond Index. They also come from different issuers: State Street and Amundi.