The Vanguard Information Technology Index Fund ETF (VGT) has already delivered a 27% return in 2026, leaving the broader S&P 500 well behind [1]. For investors who watched that rally from the sidelines, the instinct is often to assume the opportunity has passed. But a closer look at what is actually driving those gains — and where the underlying holdings may be headed — suggests the story is more nuanced than a simple case of buying high.
What's Inside VGT
VGT is not a generalist technology fund. Its heaviest bets sit squarely in the semiconductor space. Nvidia is the single largest holding, representing 17% of total fund assets [1]. Broadcom, Micron, and Advanced Micro Devices collectively occupy the fourth through sixth positions, adding up to a combined 11% of assets [2]. Together with semiconductor equipment companies, semiconductors and tech hardware account for more than 60% of the fund's total portfolio [1].
That concentration is a feature, not a bug, for investors who believe AI infrastructure spending has years of runway left. The fund also carries smaller allocations to e-commerce and online advertising, providing some diversification within the tech universe, though those segments are secondary to the chip-heavy core [1].
The AI Infrastructure Angle
The fund's outperformance is directly tied to the artificial intelligence buildout. Hyperscalers — the large cloud platform operators — are spending heavily on AI infrastructure, and that spending flows directly to the chipmakers that dominate VGT's top positions [1]. Nvidia and Broadcom have both issued multi-year guidance indicating that AI-related revenue is expected to continue compounding, giving investors a longer-dated view of demand rather than a single-quarter snapshot [2].
Grand View Research projects the global AI industry will grow at a compound annual growth rate of 30.6% through 2033 [1]. If that trajectory holds, the chipmakers at the core of VGT would be among the primary beneficiaries, given that AI model training and inference both depend on the kind of high-performance silicon these companies produce.
Nvidia, Broadcom, Micron, and AMD are all currently posting revenue growth rates that significantly exceed the average S&P 500 company, and multi-year supply agreements suggest that pace is not expected to slow quickly [2].
A Decade of Outperformance
The 27% year-to-date gain is striking, but it fits a longer pattern. VGT has delivered an annualized return of 24.4% over the past decade [1]. That track record reflects the tech sector's structural role as one of the most consistent sources of market-beating returns over extended holding periods.
The fund's low cost structure reinforces the long-term case. VGT carries an expense ratio of just 0.09%, meaning investors retain nearly all of the fund's returns rather than surrendering a meaningful slice to management fees [1]. For a diversified basket of technology companies with significant AI exposure, that is an unusually low price of admission.
The Case for Caution
None of this is a guarantee of future performance, and investors should weigh several risks before adding to or initiating a position. The fund's heavy concentration in semiconductors means it is particularly sensitive to any slowdown in AI capital expenditure. If hyperscalers pull back on data center spending — whether due to economic pressure, regulatory headwinds, or a shift in AI development priorities — VGT's top holdings would feel that contraction acutely.
Valuation is also a legitimate concern after a 27% run in under a year. The fund's largest positions have already priced in a great deal of optimism about AI demand, and any guidance revision or earnings miss from Nvidia or Broadcom in particular could ripple through the entire fund given their combined weight.
The AI growth projections from Grand View Research and the multi-year guidance from individual companies reflect expectations, not certainties. Investors should treat them as informed estimates rather than locked-in outcomes.
Who VGT Is — and Isn't — For
VGT is best understood as a high-conviction, sector-concentrated vehicle rather than a diversified core holding. Its 10-year annualized return of 24.4% came with meaningful volatility along the way [1], and investors who held through downturns in tech were rewarded, but those downturns were real and sometimes severe.
For long-term investors comfortable with that volatility profile and willing to hold through inevitable corrections, the fund's combination of AI exposure, low fees, and a decade-long track record of outperformance makes it a credible candidate. For investors seeking stability or broad market diversification, the semiconductor-heavy composition may introduce more concentration risk than is appropriate.
What to Watch Next
The near-term indicators worth tracking include quarterly earnings from Nvidia and Broadcom, which together carry outsized weight in the fund and will signal whether AI infrastructure spending is accelerating, plateauing, or softening. Hyperscaler capital expenditure guidance from Microsoft, Amazon, and Google will also be a leading indicator of chip demand. Any signs of AI spending fatigue among cloud platforms would likely weigh on VGT's top holdings before showing up in the fund's broader performance numbers.