CU31.L vs. TRIS.L

Last updated Jun 5, 2026

CU31.L (iShares USD Treasury Bond 1-3yr UCITS ETF (Acc)) and TRIS.L (Invesco US Treasury Bond 0-1 Year UCITS ETF Dist) are both Government Bonds funds - CU31.L tracks the ICE US Treasury 1-3 Year Index while TRIS.L tracks the Bloomberg US Treasury Coupons Index. Both are passively managed. Over the past 5 years, CU31.L returned 2.92%/yr vs 4.36%/yr for TRIS.L. With a 0.97 correlation, they move nearly in lockstep. CU31.L charges 0.07%/yr vs 0.06%/yr for TRIS.L.

Performance

CU31.L vs. TRIS.L - Performance Comparison

The chart below illustrates the hypothetical performance of a £10,000 investment in iShares USD Treasury Bond 1-3yr UCITS ETF (Acc) (CU31.L) and Invesco US Treasury Bond 0-1 Year UCITS ETF Dist (TRIS.L). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, CU31.L achieves a 0.66% return, which is significantly lower than TRIS.L's 1.60% return.

CU31.L

• 1D: 0.11%
• 1M: 1.13%
• YTD: 0.66%
• 6M: 0.30%
• 1Y: 4.42%
• 3Y*: 1.49%
• 5Y*: 2.92%
• 10Y*: 2.48%

TRIS.L

• 1D: 0.05%
• 1M: 1.33%
• YTD: 1.60%
• 6M: 1.14%
• 1Y: 4.90%
• 3Y*: 2.01%
• 5Y*: 4.36%
• 10Y*: —

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

CU31.L vs. TRIS.L - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020
CU31.L iShares USD Treasury Bond 1-3yr UCITS ETF (Acc)	0.66%	-1.98%	5.81%	-1.58%	7.82%	0.48%	-1.57%
TRIS.L Invesco US Treasury Bond 0-1 Year UCITS ETF Dist	1.60%	-2.79%	6.84%	-0.75%	12.57%	1.25%	-3.44%

Correlation

The correlation between CU31.L and TRIS.L is 0.98 - these two move nearly in lockstep. At this level, holding both provides almost no diversification benefit. If you already own one, adding the other does little to reduce portfolio risk.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.98
Correlation (3Y) Calculated over the trailing 3-year period	0.97
Correlation (5Y) Calculated over the trailing 5-year period	0.97
Correlation (All Time) Calculated using the full available price history since Jan 27, 2020	0.97

The correlation between CU31.L and TRIS.L has been stable across timeframes, ranging from 0.97 to 0.98 - a consistent structural relationship.

Return for Risk

CU31.L vs. TRIS.L — Risk / Return Rank

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

CU31.L

CU31.L Risk / Return Rank: 21
CU31.L Sharpe Ratio Rank: 22
CU31.L Sortino Ratio Rank: 21
CU31.L Omega Ratio Rank: 20
CU31.L Calmar Ratio Rank: 22
CU31.L Martin Ratio Rank: 21

TRIS.L

TRIS.L Risk / Return Rank: 22
TRIS.L Sharpe Ratio Rank: 23
TRIS.L Sortino Ratio Rank: 22
TRIS.L Omega Ratio Rank: 21
TRIS.L Calmar Ratio Rank: 24
TRIS.L Martin Ratio Rank: 22

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.

CU31.L vs. TRIS.L - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for iShares USD Treasury Bond 1-3yr UCITS ETF (Acc) (CU31.L) and Invesco US Treasury Bond 0-1 Year UCITS ETF Dist (TRIS.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.

	CU31.L	TRIS.L	Difference
Sharpe ratio: Return per unit of total volatility	0.72	0.76	-0.04
Sortino ratio: Return per unit of downside risk	1.08	1.13	-0.04
Omega ratio: Gain probability vs. loss probability	1.12	1.13	-0.01
Calmar ratio: Return relative to maximum drawdown	0.97	1.09	-0.11
Martin ratio: Return relative to average drawdown	2.47	2.75	-0.28
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

CU31.L vs. TRIS.L - Sharpe Ratio Comparison

The current CU31.L Sharpe Ratio is 0.72, which is comparable to the TRIS.L Sharpe Ratio of 0.76. The chart below compares the historical Sharpe Ratios of CU31.L and TRIS.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

	CU31.L	TRIS.L	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.72	0.76	-0.04
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.36	0.52	-0.16
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.27	—	—
Sharpe Ratio (All Time) Calculated using the full available price history	0.28	0.26	+0.02

Drawdowns

CU31.L vs. TRIS.L - Drawdown Comparison

The maximum CU31.L drawdown since its inception was -18.80%, roughly equal to the maximum TRIS.L drawdown of -18.99%. Use the drawdown chart below to compare losses from any high point for CU31.L and TRIS.L.

Drawdown Indicators

	CU31.L	TRIS.L	Difference
Max Drawdown Largest peak-to-trough decline	-18.80%	-18.99%	+0.19%
Max Drawdown (1Y) Largest decline over 1 year	-4.51%	-4.49%	-0.02%
Max Drawdown (3Y) Largest decline over 3 years	-8.91%	-9.71%	+0.80%
Max Drawdown (5Y) Largest decline over 5 years	-16.29%	-15.37%	-0.92%
Max Drawdown (10Y) Largest decline over 10 years	-18.80%	—	—
Current Drawdown Current decline from peak	-7.61%	-5.66%	-1.95%
Average Drawdown Average peak-to-trough decline	-8.23%	-9.81%	+1.58%
Ulcer Index Depth and duration of drawdowns from previous peaks	1.78%	1.78%	0.00%

Volatility

CU31.L vs. TRIS.L - Volatility Comparison

The current volatility for iShares USD Treasury Bond 1-3yr UCITS ETF (Acc) (CU31.L) is 1.63%, while Invesco US Treasury Bond 0-1 Year UCITS ETF Dist (TRIS.L) has a volatility of 2.02%. This indicates that CU31.L experiences smaller price fluctuations and is considered to be less risky than TRIS.L based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	CU31.L	TRIS.L	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.63%	2.02%	-0.39%
Volatility (6M) Calculated over the trailing 6-month period	4.46%	4.71%	-0.25%
Volatility (1Y) Calculated over the trailing 1-year period	6.11%	6.45%	-0.34%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	8.05%	8.34%	-0.29%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	9.19%	8.80%	+0.39%

CU31.L vs. TRIS.L - Expense Ratio Comparison

CU31.L has a 0.07% expense ratio, which is higher than TRIS.L's 0.06% 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

CU31.L vs. TRIS.L - Dividend Comparison

CU31.L has not paid dividends to shareholders, while TRIS.L's dividend yield for the trailing twelve months is around 4.01%.

Position	TTM	2025	2024	2023	2022	2021	2020
CU31.L iShares USD Treasury Bond 1-3yr UCITS ETF (Acc)	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
TRIS.L Invesco US Treasury Bond 0-1 Year UCITS ETF Dist	4.01%	4.26%	4.87%	4.68%	1.52%	0.10%	0.57%

Frequently Asked Questions

Can I hold both CU31.L and TRIS.L in my portfolio?

With a correlation of 0.98, CU31.L and TRIS.L 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, CU31.L or TRIS.L?

On fees, TRIS.L is cheaper at 0.06% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, CU31.L or TRIS.L?

TRIS.L is cheaper with a 0.06% expense ratio, compared with 0.07% for CU31.L.

What is the main difference between CU31.L and TRIS.L?

CU31.L tracks ICE US Treasury 1-3 Year Index, while TRIS.L tracks Bloomberg US Treasury Coupons Index. They also come from different issuers: iShares and Invesco. Their fees differ too: 0.07% for CU31.L and 0.06% for TRIS.L.