The Vanguard Australian Shares Index ETF (ASX: VAS) provides broad exposure to the Australian share market, tracking the S&P/ASX 300 Index (ASX: XKO).
Since the escalation of conflict between the United States, Israel, and Iran on 28 February 2026, equity markets have experienced increased volatility. This has flowed through to index-based ETFs such as VAS.
At the time of writing, VAS units are trading at $104.59 as of the 24 March 2026 close.

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What a $10,000 investment looks like
On 27 February 2026, just before the conflict began, VAS was trading at approximately $114.14.
A $10,000 investment at that price would have purchased around 87.6 units.
At the current price of $104.59, those units would now be worth roughly $9,160.
This represents a decline of about 8.4% over the period.
Keep in mind that this move reflects broader weakness across the Australian share market rather than any ETF specific factor.
Market-wide pressure driving the decline
VAS is a passive ETF, meaning its performance is tied directly to the underlying index.
Since late February, global markets have been impacted by the ongoing Middle East conflict, alongside higher energy prices and shifting expectations around interest rates.
These factors have weighed on equity valuations, particularly in rate-sensitive sectors such as financials and real estate, which make up a large portion of the Australian market.
Financials alone represent a significant share of the index, with major banks among the top holdings. This concentration has also amplified following the shift in investor sentiment.
Recent data shows VAS is down around 3.96% year to date, although it remains up approximately 5.59% over the past 12 months.
Short-term performance has been weaker, with the ETF falling about 2.75% over the past week and 6.57% over the past month.
Income remains a component of returns
While the capital value has declined in recent weeks, VAS continues to provide income through distributions.
The ETF currently offers a dividend yield of around 3.15%, with distributions paid quarterly and partially franked.
Importantly, this income component can somewhat help offset periods of price volatility.
Foolish Takeaway
Although a $10,000 investment made just before the late February escalation would currently be lower in value, this reflects recent market weakness. It points to short-term movements rather than longer-term performance.
The decline highlights how quickly broad market ETFs can move when macro conditions change.
However, VAS remains a diversified, low-cost way to gain exposure to the Australian equity market. Its returns are driven by overall market direction rather than individual company performance.