IVV vs VGS vs VTS 2026: Which International ETF Should You Buy?

But they are not interchangeable. IVV and VTS give you US exposure only. VGS gives you developed-world diversification across 23 countries. The real question is not IVV vs VGS. It is US-only vs globally diversified.

This guide breaks down exactly what you own in each, how they have performed to 31 May 2026, what they cost, and — critically — the alternatives most investors never consider.

Disclaimer: No fund manager wrote this article. No issuer is paying for placement. This is general information only and does not constitute financial advice. Always consider your personal circumstances and consult a licensed financial adviser before investing.

What's new in this 2026 update

• All AUM and returns refreshed to 31 May 2026 — meaningful changes since the March 2026 data: IVV crossed $13.8B in AUM and pushed its 5-year return above +100%, while VGS retained the largest AUM at $16.44B

• Added the new V500 (Vanguard S&P 500 ETF, 0.07% MER) as a third option for S&P 500 exposure

• Refreshed alternatives table including BGBL, IWLD, QUAL, IOO, and NDQ

• All blog references converted to absolute links

• Four premium data visualisations added

What each ETF actually does

Before comparing performance, you need to understand what you are buying. These three ETFs track completely different benchmarks — and that matters far more than the headline ticker similarity suggests. Use the Compare ETFs tool to put any two of them head-to-head with live data, or browse the broader international shares ETF category.

IVV — Pure S&P 500

IVV tracks the S&P 500 — the 500 largest US companies by market capitalisation. AUM is $13.80 billion as at May 2026, MER 0.04%. It gives you concentrated exposure to the biggest names in global markets: Apple, Microsoft, Nvidia, Amazon, Meta, Alphabet.

The trade-off: zero exposure to Japan, Europe, the UK, Canada, or any other developed market. You are making a 100% bet on the US.

VGS — Developed World ex-Australia

VGS tracks the MSCI World ex-Australia index — approximately 1,300 large and mid-cap stocks across 23 developed countries. AUM is $16.44 billion as at May 2026 — making VGS the largest international equity ETF on the ASX and the second-largest ETF in the country overall behind only VAS.

The US still dominates at ~71% (because market-cap weighting dictates it), but you also get meaningful exposure to Japan (~6%), the UK (~4%), Canada (~4%), France, Germany, Switzerland, and others.

At 0.18% MER, VGS costs more than IVV or VTS, but it is the only one of the three that genuinely diversifies beyond the US.

VTS — Total US Market

VTS tracks the entire US stock market — about 3,900 stocks including small and mid-caps that the S&P 500 misses. AUM is $6.75 billion as at May 2026, MER 0.03% — the cheapest of the three and the cheapest equity ETF on the ASX overall.

But VTS is structured as a US-domiciled CDI (CHESS Depository Interest) rather than an Australian-domiciled fund. That has practical implications — covered in detail below.

Performance: the numbers that matter

Returns to 31 May 2026, sourced from ReviewETF.com.au and CBOE Australia. All figures are cumulative AUD total returns.

What the data tells us

IVV is now the top performer of the three over 5 years — crossing +100%. A $10,000 investment 5 years ago would be worth $20,184 today. The S&P 500's large-cap concentration in mega-cap tech (Apple, Microsoft, Nvidia) has driven this outperformance against the broader US market.

VTS slightly trails IVV despite a lower fee. This is because VTS includes small and mid-cap stocks that have underperformed large-caps over this period. Broader diversification within the US has actually been a drag on returns.

VGS trails both because approximately 29% of its portfolio is in non-US developed markets (Japan, Europe, UK) that have underperformed the US over the past 5 years. That is the cost of geographic diversification — but it is also the insurance policy.

IOO has crushed everything — returning +112.4% over 5 years. It tracks the S&P Global 100 (the 100 largest companies on earth), which means even more mega-cap concentration than IVV. At 0.40% MER it is expensive, but the returns have more than justified the cost. The risk: extreme concentration in ~100 stocks.

BGBL is still the value play. At 0.08% MER, BGBL tracks a similar index to VGS at less than half the fee. It only listed in 2021, so there is no 5-year track record yet — but the fundamentals are strong. We covered this comparison in depth in VGS vs BGBL: The cheaper alternative or just hype?.

What you actually own: geographic exposure

This is the chart that changes the conversation. Most investors do not realise how different these three ETFs are under the hood.

The uncomfortable truth

If you hold IVV or VTS as your only international ETF alongside VAS or A200 for Australian exposure, your total portfolio has zero allocation to Japan (the world's fourth-largest economy), zero allocation to the UK, and zero allocation to Europe.

VGS solves this in one fund. You get the US at ~71% (because that is what the market-cap weighting dictates) plus 23 countries of developed-world diversification.

For a full breakdown of how Australian shares compare to global, read Australian vs Global Shares — What Should You Hold?.

Sector exposure

The sector tilt matters as much as the geography.

IVV and VTS are heavily tilted toward US tech — approximately 30–32% in the technology sector alone. VGS still has significant tech exposure (~25%) because the US dominates its weighting, but the inclusion of Japanese industrials, European financials, and UK healthcare provides slightly more balance.

If your Australian portfolio (VAS or A200) is already heavily weighted toward financials and materials, adding VGS gives you the most different sector exposure. Adding IVV gives you even more concentration in tech.

Fee impact over 20 years

Fees seem trivial at these levels — 0.03% vs 0.18% — but they compound significantly over decades.

Assumes 8% gross return p.a. before fees.

The difference between VTS (0.03%) and VGS (0.18%) is approximately $13K on a $100K investment over 20 years. That is not nothing — but VGS gives you geographic diversification that the others do not.

The real outlier is QUAL at 0.40% MER. Over 20 years, its fee drag costs ~$31K more than VTS. Factor ETFs need to consistently beat the market to justify that cost — and the data shows they often do, but not always. For more on whether fees predict returns, see Everything You Need to Know About ETF Fees and Performance.

The domicile issue: why VTS is different

VTS is US-domiciled, which matters for Australian investors.

The US estate tax issue is the one most people miss. US-domiciled assets held by non-US persons may be subject to US estate tax on holdings above US$60,000. For larger portfolios, this is worth professional advice.

For most investors, the simplicity of an Australian-domiciled fund (IVV or VGS) is worth the marginally higher MER. If you want total US market exposure in an Australian-domiciled wrapper, consider BGBL or IWLD instead.

For the full tax breakdown, read The ETF Tax-Time Guide 2026.

The hedging question

All three of IVV, VGS, and VTS are unhedged — meaning your returns are affected by movements in the AUD/USD exchange rate.

When the Australian dollar falls (as it has over much of the past decade), unhedged international ETFs get a tailwind. When the AUD rises, they face a headwind.

If you want to neutralise currency risk, hedged versions exist:

Over the past year, hedged versions have significantly outperformed unhedged — IHVV +27.86% vs IVV +16.16%, and VGAD +26.36% vs VGS +14.39%. That ~11 percentage point gap reflects AUD weakness against the USD over the period. If the AUD strengthens from here, hedged will outperform; if AUD weakens further, unhedged wins.

A common approach is to hold a mix — for example, 70% unhedged and 30% hedged. We covered this in detail in Hedged vs Unhedged ETFs — The Best Option in Every Category.

The alternatives you should consider

IVV, VGS, and VTS get most of the attention, but they are not the only options.

Global diversified (VGS alternatives)

US-focused (IVV/VTS alternatives)

Non-US / small cap (for geographic diversification)

For the full hedged ETF universe, see Every Hedged ETF on the ASX.

How these fit into a portfolio

The right choice depends on what else you hold. Here are three common portfolio approaches.

Approach 1 — Simple two-ETF portfolio

VGS or BGBL is the natural choice here because it provides built-in geographic diversification. You do not need to separately manage US, European, and Japanese allocations. For more on this approach versus core-satellite, see The 2-ETF Portfolio: Is It Actually the Best Approach?.

Approach 2 — US conviction with satellites

This is for investors who deliberately want to overweight the US. Adding VEU as a satellite ensures you still have some non-US exposure.

Approach 3 — Core-satellite with diversified core

This gives you a diversified core (VGS + VGAD), currency hedging on a portion, and satellite positions in quality and small-cap for factor diversification. For the full satellite playbook, see How to Build Your Satellite Portfolio with ETFs.

The bottom line

The real decision is not IVV vs VGS vs VTS. It is whether you want to bet entirely on the US, or whether you want genuine geographic diversification.

Both are valid — but you should make that choice deliberately, not by default.

If you are building a portfolio from scratch, start with How to Build Your Portfolio from Scratch with ETFs. If you already hold one of these ETFs and want to check for overlap, see How Many ETFs Should You Actually Hold?.

Related reading

• Every International Shares ETF on the ASX: The Complete Guide

• Hedged vs Unhedged ETFs — The Best Option in Every Category

• Best ETFs in Australia 2026 — The May Leaderboard

• Best Low-Cost Index Funds Australia 2026

Sources: ReviewETF.com.au, CBOE Australia (performance to 31 May 2026), Vanguard Australia, iShares (BlackRock). All MER and AUM figures verified as at 31 May 2026. Returns shown are cumulative AUD total return. Past performance is not indicative of future returns. General information only — this is not financial advice. Last refreshed June 2026.