When choosing between two popular exchange-traded funds (ETFs), the right answer is rarely black and white. Often, it comes down to what role you want the investment to play in your portfolio and how much volatility you are prepared to accept along the way.
Two of the most widely used ASX ETFs are the BetaShares Nasdaq 100 ETF (ASX: NDQ) and the Vanguard Australian Shares Index ETF (ASX: VAS). Both provide diversified exposure, both are low cost, and both can form the backbone of a long-term portfolio.
But they are built very differently.
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What the NDQ ETF offers
The NDQ ETF tracks the Nasdaq 100 Index, which is heavily weighted toward global technology and innovation leaders.
The ETF provides exposure to some of the world's most influential stocks across areas such as artificial intelligence, cloud computing, semiconductors, digital payments, and platform-based business models. These businesses often reinvest heavily in research and development and have scalable models capable of growing earnings at a strong pace.
The trade-off is volatility. Growth-focused stocks can experience sharper share price swings, particularly when interest rates move or sentiment shifts. The BetaShares Nasdaq 100 ETF's performance can be strong over long periods, but it is unlikely to deliver a smooth ride every year.
For investors comfortable with fluctuations in pursuit of higher long-term growth, I think that profile can be appealing.
What VAS offers
The VAS ETF takes a very different approach. It tracks the top 300 stocks on the Australian market, offering broad exposure to banks, resources, healthcare, consumer businesses, and infrastructure. It is diversified across sectors and tends to provide steady dividend income from established Australian companies.
Because the Australian market is heavily weighted toward financials and mining, the Vanguard Australian Shares Index ETF is more tied to domestic economic conditions and commodity cycles. It generally delivers less dramatic growth than a technology-focused ETF, but it can offer more stability and income.
For investors with a lower risk tolerance or those seeking reliable dividends, the VAS ETF may feel more comfortable in my opinion.
The long-term return question
Over the very long term, total returns are driven largely by earnings growth. That is where the key difference lies.
The NDQ ETF's holdings are concentrated in stocks that have historically grown earnings at a faster rate than the broader Australian market. While that does not guarantee future outperformance, I think it provides a reasonable case for stronger long-term growth potential.
The VAS ETF, by contrast, reflects the structure of the Australian economy. It offers stability and income, but its growth prospects are tied to mature sectors that may expand more gradually.
So which is the better buy?
I think both ETFs are sensible investments, and many portfolios could justify holding both.
If I had to choose just one based purely on long-term return potential, I would favour the BetaShares Nasdaq 100 ETF. I believe the quality and growth profile of its underlying stocks give it a stronger chance of delivering higher returns over an extended period.
However, that higher growth potential comes with higher volatility. For investors who prefer steadier returns and dividend income, the Vanguard Australian Shares Index ETF may be the more suitable choice.
Foolish takeaway
The NDQ ETF and the VAS ETF serve different purposes.
The BetaShares Nasdaq 100 ETF offers exposure to global innovation and potentially stronger long-term growth. The Vanguard Australian Shares Index ETF provides broad Australian market exposure and more predictable income.
The better buy ultimately depends on your risk tolerance and objectives. For me, I lean toward the NDQ ETF for its growth potential, but I can easily see why many investors would prefer the stability that the VAS ETF offers.
