VSO.AX vs. VAS.AX

Last updated Jun 4, 2026

VSO.AX (Vanguard MSCI Australian Small Companies INDEX ETF) and VAS.AX (Vanguard Australian Shares Index ETF) are both Asia Pacific Equities funds from Vanguard - VSO.AX tracks the MSCI Australian Shares Small Cap Index while VAS.AX tracks the S&P/ASX 300 Index. Both are passively managed. Over the past 10 years, VSO.AX returned 9.38%/yr vs 9.18%/yr for VAS.AX. A 0.79 correlation means they provide meaningful diversification when combined. VSO.AX charges 0.30%/yr vs 0.07%/yr for VAS.AX.

Performance

VSO.AX vs. VAS.AX - Performance Comparison

The chart below illustrates the hypothetical performance of a A$10,000 investment in Vanguard MSCI Australian Small Companies INDEX ETF (VSO.AX) and Vanguard Australian Shares Index ETF (VAS.AX). The values are adjusted to include any dividend payments, if applicable.

Returns By Period

In the year-to-date period, VSO.AX achieves a -2.89% return, which is significantly lower than VAS.AX's 2.04% return. Both investments have delivered pretty close results over the past 10 years, with VSO.AX having a 9.38% annualized return and VAS.AX not far behind at 9.18%.

VSO.AX

• 1D: 0.01%
• 1M: 1.19%
• YTD: -2.89%
• 6M: -1.54%
• 1Y: 13.35%
• 3Y*: 11.06%
• 5Y*: 6.73%
• 10Y*: 9.38%

VAS.AX

• 1D: 0.75%
• 1M: 1.53%
• YTD: 2.04%
• 6M: 3.80%
• 1Y: 7.34%
• 3Y*: 10.91%
• 5Y*: 7.62%
• 10Y*: 9.18%

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

VSO.AX vs. VAS.AX - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
VSO.AX Vanguard MSCI Australian Small Companies INDEX ETF	-2.89%	24.14%	8.91%	6.32%	-11.74%	21.77%	14.75%	21.67%	-7.43%	17.67%
VAS.AX Vanguard Australian Shares Index ETF	2.04%	10.66%	11.40%	12.00%	-1.68%	17.04%	1.90%	23.77%	-3.14%	11.82%

Correlation

The correlation between VSO.AX and VAS.AX is 0.74, 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	0.74
Correlation (3Y) Calculated over the trailing 3-year period	0.81
Correlation (5Y) Calculated over the trailing 5-year period	0.83
Correlation (10Y) Calculated over the trailing 10-year period	0.78
Correlation (All Time) Calculated using the full available price history since May 24, 2011	0.79

The correlation between VSO.AX and VAS.AX has been stable across timeframes, ranging from 0.74 to 0.83 - a consistent structural relationship.

Return for Risk

VSO.AX vs. VAS.AX — Risk / Return Rank

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

VSO.AX

VSO.AX Risk / Return Rank: 22
VSO.AX Sharpe Ratio Rank: 23
VSO.AX Sortino Ratio Rank: 22
VSO.AX Omega Ratio Rank: 23
VSO.AX Calmar Ratio Rank: 19
VSO.AX Martin Ratio Rank: 20

VAS.AX

VAS.AX Risk / Return Rank: 19
VAS.AX Sharpe Ratio Rank: 19
VAS.AX Sortino Ratio Rank: 18
VAS.AX Omega Ratio Rank: 19
VAS.AX Calmar Ratio Rank: 20
VAS.AX Martin Ratio Rank: 20

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.

VSO.AX vs. VAS.AX - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Vanguard MSCI Australian Small Companies INDEX ETF (VSO.AX) and Vanguard Australian Shares Index ETF (VAS.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.

	VSO.AX	VAS.AX	Difference
Sharpe ratio: Return per unit of total volatility	0.80	0.62	+0.18
Sortino ratio: Return per unit of downside risk	1.18	0.94	+0.23
Omega ratio: Gain probability vs. loss probability	1.15	1.12	+0.03
Calmar ratio: Return relative to maximum drawdown	0.79	0.85	-0.06
Martin ratio: Return relative to average drawdown	2.25	2.21	+0.04
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

VSO.AX vs. VAS.AX - Sharpe Ratio Comparison

The current VSO.AX Sharpe Ratio is 0.80, which is comparable to the VAS.AX Sharpe Ratio of 0.62. The chart below compares the historical Sharpe Ratios of VSO.AX and VAS.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.

Sharpe Ratios by Period

	VSO.AX	VAS.AX	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.80	0.62	+0.18
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	0.41	0.60	-0.18
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.55	0.63	-0.08
Sharpe Ratio (All Time) Calculated using the full available price history	0.40	0.59	-0.19

Drawdowns

VSO.AX vs. VAS.AX - Drawdown Comparison

The maximum VSO.AX drawdown since its inception was -40.60%, which is greater than VAS.AX's maximum drawdown of -35.75%. Use the drawdown chart below to compare losses from any high point for VSO.AX and VAS.AX.

Drawdown Indicators

	VSO.AX	VAS.AX	Difference
Max Drawdown Largest peak-to-trough decline	-40.60%	-35.75%	-4.85%
Max Drawdown (1Y) Largest decline over 1 year	-16.81%	-8.56%	-8.25%
Max Drawdown (3Y) Largest decline over 3 years	-16.81%	-13.23%	-3.58%
Max Drawdown (5Y) Largest decline over 5 years	-23.53%	-15.18%	-8.35%
Max Drawdown (10Y) Largest decline over 10 years	-40.60%	-35.75%	-4.85%
Current Drawdown Current decline from peak	-7.97%	-3.45%	-4.52%
Average Drawdown Average peak-to-trough decline	-6.39%	-4.70%	-1.69%
Ulcer Index Depth and duration of drawdowns from previous peaks	5.91%	3.31%	+2.60%

Volatility

VSO.AX vs. VAS.AX - Volatility Comparison

Vanguard MSCI Australian Small Companies INDEX ETF (VSO.AX) has a higher volatility of 4.67% compared to Vanguard Australian Shares Index ETF (VAS.AX) at 4.29%. This indicates that VSO.AX's price experiences larger fluctuations and is considered to be riskier than VAS.AX based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	VSO.AX	VAS.AX	Difference
Volatility (1M) Calculated over the trailing 1-month period	4.67%	4.29%	+0.38%
Volatility (6M) Calculated over the trailing 6-month period	13.71%	9.61%	+4.10%
Volatility (1Y) Calculated over the trailing 1-year period	16.56%	11.82%	+4.74%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	16.27%	12.77%	+3.50%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	16.92%	14.45%	+2.47%

VSO.AX vs. VAS.AX - Expense Ratio Comparison

VSO.AX has a 0.30% expense ratio, which is higher than VAS.AX's 0.07% expense ratio.

Dividends

VSO.AX vs. VAS.AX - Dividend Comparison

VSO.AX's dividend yield for the trailing twelve months is around 7.06%, more than VAS.AX's 3.12% yield.

Position	TTM	2025	2024	2023	2022	2021	2020	2019	2018	2017	2016	2015
VAS.AX Vanguard Australian Shares Index ETF	3.12%	3.17%	3.22%	3.71%	7.19%	3.01%	2.56%	4.12%	4.84%	3.76%	4.14%	4.30%
VSO.AX Vanguard MSCI Australian Small Companies INDEX ETF	7.06%	6.86%	2.44%	3.89%	5.39%	3.55%	6.24%	2.96%	2.21%	3.86%	3.30%	2.68%

Frequently Asked Questions

Can I hold both VSO.AX and VAS.AX in my portfolio?

VSO.AX and VAS.AX have a correlation of 0.74, meaning they provide meaningful diversification benefit when combined. Depending on your allocation goals, holding both could reduce overall portfolio risk.

Which ETF is better, VSO.AX or VAS.AX?

On fees, VAS.AX is cheaper at 0.07% per year. The better choice depends on whether you care most about return, fees, risk, or income.

Which ETF is cheaper, VSO.AX or VAS.AX?

VAS.AX is cheaper with a 0.07% expense ratio, compared with 0.30% for VSO.AX.

What is the main difference between VSO.AX and VAS.AX?

VSO.AX tracks MSCI Australian Shares Small Cap Index, while VAS.AX tracks S&P/ASX 300 Index. Their fees differ too: 0.30% for VSO.AX and 0.07% for VAS.AX.