PortfoliosLab logoPortfoliosLab logo

Documentation

Upgrade your plan
GOVT.AX vs. IGB.AX
Performance
Return for Risk
Drawdowns
Volatility
Dividends

GOVT.AX vs. IGB.AX

Last updated Jul 16, 2026
Documentation

GOVT.AX (SPDR ETFs Australia - State Street SPDR S&P/ASX iBoxx Australian Government Bond ETF) and IGB.AX (iShares Treasury ETF) are both Government Bonds funds - GOVT.AX tracks the SPDR Index while IGB.AX tracks the iShares Treasury Index. Both are passively managed. Over the past 10 years, GOVT.AX returned 1.15%/yr vs 0.98%/yr for IGB.AX. A 0.63 correlation means they provide meaningful diversification when combined.

Performance

GOVT.AX vs. IGB.AX - Performance Comparison

The chart below illustrates the hypothetical performance of a A$10,000 investment in SPDR ETFs Australia - State Street SPDR S&P/ASX iBoxx Australian Government Bond ETF (GOVT.AX) and iShares Treasury ETF (IGB.AX). The values are adjusted to include any dividend payments, if applicable.

Loading charts...

Returns By Period

In the year-to-date period, GOVT.AX achieves a 1.20% return, which is significantly lower than IGB.AX's 1.50% return. Over the past 10 years, GOVT.AX has outperformed IGB.AX with an annualized return of 1.15%, while IGB.AX has yielded a comparatively lower 0.98% annualized return.

GOVT.AX

1D
0.08%
1M
-0.06%
6M
1.20%
YTD
1.20%
1Y
1.46%
3Y*
3.19%
5Y*
-0.88%
10Y*
1.15%

IGB.AX

1D
0.15%
1M
0.05%
6M
1.25%
YTD
1.50%
1Y
1.15%
3Y*
2.86%
5Y*
-0.71%
10Y*
0.98%
*Multi-year figures are annualized to reflect compound growth (CAGR)

GOVT.AX vs. IGB.AX - Yearly Performance Comparison

2026 (YTD)202520242023202220212020201920182017
GOVT.AX
SPDR ETFs Australia - State Street SPDR S&P/ASX iBoxx Australian Government Bond ETF		1.20%2.72%2.83%4.91%-12.45%-3.42%3.78%8.85%4.34%3.39%
IGB.AX
iShares Treasury ETF		1.50%2.62%1.90%3.88%-10.24%-3.27%3.68%7.38%4.73%2.37%

Correlation

The correlation between GOVT.AX and IGB.AX is 0.84, indicating a strong positive relationship between their price movements. Combining them offers limited diversification - they tend to fall together during downturns.

Correlation
Correlation (1Y)
Calculated over the trailing 1-year period

0.84

Correlation (3Y)
Calculated over the trailing 3-year period

0.88

Correlation (5Y)
Calculated over the trailing 5-year period

0.83

Correlation (10Y)
Calculated over the trailing 10-year period

0.69

Correlation (All Time)
Calculated using the full available price history since Jul 27, 2012

0.63

Over the past year, GOVT.AX and IGB.AX have become more correlated (0.84) than their long-term average of 0.63, meaning their price movements have been converging.

Compare stocks, funds, or ETFs

Search for stocks, ETFs, and funds for a quick comparison or use the comparison tool for more options.

SPDR ETFs Australia - State Street SPDR S&P/ASX iBoxx Australian Government Bond ETF

iShares Treasury ETF

Return for Risk

GOVT.AX vs. IGB.AX — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.
GOVT.AX
GOVT.AX Risk / Return Rank: 1414
Overall Rank
GOVT.AX Sharpe Ratio Rank: 1515
Sharpe Ratio Rank
GOVT.AX Sortino Ratio Rank: 1414
Sortino Ratio Rank
GOVT.AX Omega Ratio Rank: 1313
Omega Ratio Rank
GOVT.AX Calmar Ratio Rank: 1414
Calmar Ratio Rank
GOVT.AX Martin Ratio Rank: 1414
Martin Ratio Rank
IGB.AX
IGB.AX Risk / Return Rank: 1313
Overall Rank
IGB.AX Sharpe Ratio Rank: 1414
Sharpe Ratio Rank
IGB.AX Sortino Ratio Rank: 1212
Sortino Ratio Rank
IGB.AX Omega Ratio Rank: 1212
Omega Ratio Rank
IGB.AX Calmar Ratio Rank: 1313
Calmar Ratio Rank
IGB.AX Martin Ratio Rank: 1313
Martin Ratio Rank
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.

GOVT.AX vs. IGB.AX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for SPDR ETFs Australia - State Street SPDR S&P/ASX iBoxx Australian Government Bond ETF (GOVT.AX) and iShares Treasury ETF (IGB.AX). 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.

Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.

GOVT.AXIGB.AXDifference
Sharpe ratioReturn per unit of total volatility
0.36
0.30

+0.06

Sortino ratioReturn per unit of downside risk
0.55
0.45

+0.09

Omega ratioGain probability vs. loss probability

1.06

1.05

+0.01

Calmar ratioReturn relative to maximum drawdown

0.36

0.31

+0.06

Martin ratioReturn relative to average drawdown

0.77

0.59

+0.18

GOVT.AX vs. IGB.AX - Sharpe Ratio Comparison

The current GOVT.AX Sharpe Ratio is 0.36, which is comparable to the IGB.AX Sharpe Ratio of 0.30. The chart below compares the historical Sharpe Ratios of GOVT.AX and IGB.AX, calculated using daily returns over the previous 12 months. A higher Sharpe Ratio indicates better risk-adjusted performance relative to the risk-free rate.

Loading charts...

Drawdowns

GOVT.AX vs. IGB.AX - Drawdown Comparison

The maximum GOVT.AX drawdown since its inception was -18.22%, which is greater than IGB.AX's maximum drawdown of -16.94%. Use the drawdown chart below to compare losses from any high point for GOVT.AX and IGB.AX.

Loading charts...

Drawdown Indicators

GOVT.AXIGB.AXDifference

Max Drawdown

Largest peak-to-trough decline

-18.22%

-16.94%

-1.28%

Max Drawdown (1Y)

Largest decline over 1 year

-3.96%

-3.87%

-0.09%

Max Drawdown (3Y)

Largest decline over 3 years

-4.78%

-3.92%

-0.86%

Max Drawdown (5Y)

Largest decline over 5 years

-17.70%

-16.01%

-1.69%

Max Drawdown (10Y)

Largest decline over 10 years

-18.22%

-16.94%

-1.28%

Current Drawdown

Current decline from peak

-6.19%

-5.71%

-0.48%

Average Drawdown

Average peak-to-trough decline

-4.64%

-4.44%

-0.20%

Ulcer Index

Depth and duration of drawdowns from previous peaks

1.92%

2.05%

-0.13%

Volatility

GOVT.AX vs. IGB.AX - Volatility Comparison

SPDR ETFs Australia - State Street SPDR S&P/ASX iBoxx Australian Government Bond ETF (GOVT.AX) has a higher volatility of 0.94% compared to iShares Treasury ETF (IGB.AX) at 0.85%. This indicates that GOVT.AX's price experiences larger fluctuations and is considered to be riskier than IGB.AX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Loading charts...

Volatility by Period

GOVT.AXIGB.AXDifference

Volatility (1M)

Calculated over the trailing 1-month period

0.94%

0.85%

+0.09%

Volatility (6M)

Calculated over the trailing 6-month period

3.01%

2.91%

+0.10%

Volatility (1Y)

Calculated over the trailing 1-year period

4.01%

4.01%

0.00%

Volatility (5Y)

Calculated over the trailing 5-year period, annualized

6.16%

5.40%

+0.76%

Volatility (10Y)

Calculated over the trailing 10-year period, annualized

5.78%

5.02%

+0.76%

Dividends

GOVT.AX vs. IGB.AX - Dividend Comparison

GOVT.AX's dividend yield for the trailing twelve months is around 3.01%, more than IGB.AX's 2.60% yield.

PositionTTM20252024202320222021202020192018201720162015
GOVT.AX
SPDR ETFs Australia - State Street SPDR S&P/ASX iBoxx Australian Government Bond ETF		3.01%2.83%1.95%1.10%1.03%2.21%2.20%2.03%2.02%2.36%3.16%3.42%
IGB.AX
iShares Treasury ETF		2.60%3.10%2.47%1.63%0.80%1.20%2.47%1.54%1.56%2.11%2.09%5.81%

Frequently Asked Questions

GOVT.AX and IGB.AX have a correlation of 0.84, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

GOVT.AX tracks SPDR Index, while IGB.AX tracks iShares Treasury Index. They also come from different issuers: SPDR and iShares.

Portfolio Optimizer

Find the right allocation for GOVT.AX and IGB.AX

Add both to a portfolio and optimize allocations for your target — whether that's maximizing returns, minimizing drawdowns, or balancing risk across holdings.

Open Portfolio Optimizer