GLBL.L vs. GAAA.L

Last updated Jun 5, 2026

GLBL.L (SPDR Bloomberg Barclays Global Aggregate Bond UCITS USD unhedged) and GAAA.L (iShares Global AAA-AA Govt Bond UCITS ETF USD (Acc)) are both Global Bonds funds tracking the Bloomberg Global Aggregate TR USD, from State Street and iShares respectively. Both are passively managed. Over the past 5 years, GLBL.L returned -2.93%/yr vs -1.98%/yr for GAAA.L. A 0.64 correlation means they provide meaningful diversification when combined. GLBL.L charges 0.10%/yr vs 0.20%/yr for GAAA.L.

Performance

GLBL.L vs. GAAA.L - Performance Comparison

The chart below illustrates the hypothetical performance of a £10,000 investment in SPDR Bloomberg Barclays Global Aggregate Bond UCITS USD unhedged (GLBL.L) and iShares Global AAA-AA Govt Bond UCITS ETF USD (Acc) (GAAA.L). The values are adjusted to include any dividend payments, if applicable.

Different Trading Currencies

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

Returns By Period

In the year-to-date period, GLBL.L achieves a -1.47% return, which is significantly lower than GAAA.L's 0.53% return.

GLBL.L

• 1D: 0.11%
• 1M: 0.87%
• YTD: -1.47%
• 6M: -1.76%
• 1Y: 0.11%
• 3Y*: -2.10%
• 5Y*: -2.93%
• 10Y*: —

GAAA.L

• 1D: 0.20%
• 1M: 0.92%
• YTD: 0.53%
• 6M: -0.01%
• 1Y: 2.89%
• 3Y*: 1.34%
• 5Y*: -1.98%
• 10Y*: —

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

GLBL.L vs. GAAA.L - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018
GLBL.L SPDR Bloomberg Barclays Global Aggregate Bond UCITS USD unhedged	-1.47%	-2.39%	-2.65%	-2.45%	-7.22%	-5.08%	3.70%	1.65%	2.49%
GAAA.L iShares Global AAA-AA Govt Bond UCITS ETF USD (Acc)	0.53%	2.56%	-3.42%	2.85%	-11.17%	-7.89%	9.07%	0.93%	2.21%

Correlation

The correlation between GLBL.L and GAAA.L is 0.49, which is low. Their price movements are largely independent, making them effective diversification partners.

	Correlation
Correlation (1Y) Calculated over the trailing 1-year period	0.49
Correlation (3Y) Calculated over the trailing 3-year period	0.59
Correlation (5Y) Calculated over the trailing 5-year period	0.60
Correlation (All Time) Calculated using the full available price history since Jul 4, 2018	0.64

The correlation between GLBL.L and GAAA.L shifts across timeframes, from 0.49 (1 year) to 0.64 (all time), reflecting how their relationship changes across market environments.

Return for Risk

GLBL.L vs. GAAA.L — Risk / Return Rank

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

GLBL.L

GLBL.L Risk / Return Rank: 9
GLBL.L Sharpe Ratio Rank: 9
GLBL.L Sortino Ratio Rank: 8
GLBL.L Omega Ratio Rank: 9
GLBL.L Calmar Ratio Rank: 9
GLBL.L Martin Ratio Rank: 9

GAAA.L

GAAA.L Risk / Return Rank: 13
GAAA.L Sharpe Ratio Rank: 13
GAAA.L Sortino Ratio Rank: 12
GAAA.L Omega Ratio Rank: 12
GAAA.L Calmar Ratio Rank: 14
GAAA.L Martin Ratio Rank: 14

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.

GLBL.L vs. GAAA.L - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for SPDR Bloomberg Barclays Global Aggregate Bond UCITS USD unhedged (GLBL.L) and iShares Global AAA-AA Govt Bond UCITS ETF USD (Acc) (GAAA.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.

	GLBL.L	GAAA.L	Difference
Sharpe ratio: Return per unit of total volatility	0.02	0.48	-0.46
Sortino ratio: Return per unit of downside risk	0.07	0.72	-0.65
Omega ratio: Gain probability vs. loss probability	1.01	1.08	-0.08
Calmar ratio: Return relative to maximum drawdown	0.02	0.80	-0.77
Martin ratio: Return relative to average drawdown	0.04	1.60	-1.56
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

GLBL.L vs. GAAA.L - Sharpe Ratio Comparison

The current GLBL.L Sharpe Ratio is 0.02, which is lower than the GAAA.L Sharpe Ratio of 0.48. The chart below compares the historical Sharpe Ratios of GLBL.L and GAAA.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

	GLBL.L	GAAA.L	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.02	0.48	-0.46
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.43	-0.25	-0.18
Sharpe Ratio (All Time) Calculated using the full available price history	-0.16	-0.09	-0.07

Drawdowns

GLBL.L vs. GAAA.L - Drawdown Comparison

The maximum GLBL.L drawdown since its inception was -25.17%, roughly equal to the maximum GAAA.L drawdown of -24.49%. Use the drawdown chart below to compare losses from any high point for GLBL.L and GAAA.L.

Drawdown Indicators

	GLBL.L	GAAA.L	Difference
Max Drawdown Largest peak-to-trough decline	-25.17%	-24.49%	-0.68%
Max Drawdown (1Y) Largest decline over 1 year	-5.16%	-3.62%	-1.54%
Max Drawdown (3Y) Largest decline over 3 years	-8.09%	-5.86%	-2.23%
Max Drawdown (5Y) Largest decline over 5 years	-18.62%	-19.04%	+0.42%
Current Drawdown Current decline from peak	-24.05%	-18.20%	-5.85%
Average Drawdown Average peak-to-trough decline	-12.84%	-12.61%	-0.23%
Ulcer Index Depth and duration of drawdowns from previous peaks	2.69%	1.80%	+0.89%

Volatility

GLBL.L vs. GAAA.L - Volatility Comparison

The current volatility for SPDR Bloomberg Barclays Global Aggregate Bond UCITS USD unhedged (GLBL.L) is 1.36%, while iShares Global AAA-AA Govt Bond UCITS ETF USD (Acc) (GAAA.L) has a volatility of 2.22%. This indicates that GLBL.L experiences smaller price fluctuations and is considered to be less risky than GAAA.L based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	GLBL.L	GAAA.L	Difference
Volatility (1M) Calculated over the trailing 1-month period	1.36%	2.22%	-0.86%
Volatility (6M) Calculated over the trailing 6-month period	3.61%	5.00%	-1.39%
Volatility (1Y) Calculated over the trailing 1-year period	5.00%	5.97%	-0.97%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	6.74%	7.86%	-1.12%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	7.27%	7.94%	-0.67%

GLBL.L vs. GAAA.L - Expense Ratio Comparison

GLBL.L has a 0.10% expense ratio, which is lower than GAAA.L's 0.20% 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

GLBL.L vs. GAAA.L - Dividend Comparison

GLBL.L's dividend yield for the trailing twelve months is around 0.03%, while GAAA.L has not paid dividends to shareholders.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018
GAAA.L iShares Global AAA-AA Govt Bond UCITS ETF USD (Acc)	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%	0.00%
GLBL.L SPDR Bloomberg Barclays Global Aggregate Bond UCITS USD unhedged	0.03%	0.03%	0.03%	0.02%	0.01%	0.01%	0.02%	0.02%	0.01%

Frequently Asked Questions

Can I hold both GLBL.L and GAAA.L in my portfolio?

GLBL.L and GAAA.L have a correlation of 0.49, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, GLBL.L or GAAA.L?

On fees, GLBL.L is cheaper at 0.10% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, GLBL.L or GAAA.L?

GLBL.L is cheaper with a 0.10% expense ratio, compared with 0.20% for GAAA.L.

What is the main difference between GLBL.L and GAAA.L?

Both ETFs track Bloomberg Global Aggregate TR USD. They also come from different issuers: State Street and iShares. Their fees differ too: 0.10% for GLBL.L and 0.20% for GAAA.L.