Had You Bought This Vanguard ETF at the Start of January, You'd be Obliterating the S&P 500 in 2026

The S&P 500 (SNPINDEX: ^GSPC) has climbed by 12.2% so far in 2026 (as of Sept. 28), so it's already pacing ahead of its average annual return of 10.7% dating back to its inception in 1957. But had an investor bought the Vanguard Information Technology ETF (NYSEMKT: VGT) on Jan. 1 instead, they would be sitting on a much larger gain of 32.7% this year.

The exchange-traded fund (ETF) exclusively invests in stocks from the information technology sector, which is home to many of the trillion-dollar powerhouses at the heart of the artificial intelligence (AI) revolution. Many of those stocks are outperforming the broader market by a wide margin this year, contributing to the strong returns in the Vanguard ETF.

Will the momentum continue, or is the tech sector about to cool off?

Six trillion-dollar stocks make up half the value of this ETF

The U.S. is home to 13 public companies with valuations of $1 trillion or more, and six of them are in the information technology sector.

1. Nvidia: $5.5 trillion.
2. Apple: $4.9 trillion.
3. Microsoft: $3.8 trillion.
4. Broadcom: $1.6 trillion.
5. Micron Technology: $1.2 trillion.
6. Advanced Micro Devices: $1 trillion.

The Vanguard Information Technology ETF holds 318 stocks, but the above six are its largest positions, with a dominant combined portfolio weighting of 56.6%.

Stock	Vanguard ETF Portfolio Weighting
1. Nvidia	17.73%
2. Apple	15.79%
3. Microsoft	11.51%
4. Broadcom	4.52%
5. Micron Technology	4.18%
6. Advanced Micro Devices	2.95%

Data source: Vanguard. Portfolio weightings are accurate as of Aug. 31, 2026, and are subject to change.

Four of those stocks have outperformed the S&P 500 so far this year -- and two by a very wide margin -- which is a key reason why the Vanguard ETF is handily beating the index.

MU data by YCharts

Nvidia chief executive Jensen Huang recently said he expects data center chip sales to double next year thanks to ongoing demand from the AI industry. AMD CEO Lisa Su also predicts her company's data center revenue to more than double next year. Simply put, the AI infrastructure spending boom is unlikely to slow any time soon, which should support further gains in semiconductor stocks.

I also want to highlight Sandisk, Intel, CrowdStrike, and Palo Alto Networks which have each more than doubled in value so far this year. They are among the top 20 positions in the Vanguard ETF, so they have also made a big contribution to its overall return.

SNDK data by YCharts

Is there still time to buy the Vanguard Information Technology ETF?

This Vanguard ETF has produced a compound annual return of 14.9% since it launched in 2004, trouncing the 10.8% annual return in the S&P 500 over the same period. Simply put, it has an excellent track record against the broader market, so it looks like a no-brainer investment from that perspective.

However, it would be unwise for investors to park all of their money in an ETF that solely invests in the tech sector, because any disruption to the ongoing AI boom will spark some serious volatility. There are certainly some risks appearing; for example, lawmakers in more than a dozen U.S. states have introduced legislation to temporarily ban the construction of further data centers while they weigh the social, environmental, and economic impacts.

Moreover, a recent survey by UBS Group found that 60% of businesses are routing some AI workloads to cheaper, more efficient models instead of those from mainstream developers like OpenAI. These models typically consume less computing power, so this effort to reduce costs could result in lower demand for data center chips and components in the future. That would be bad news for many of the semiconductor stocks in the Vanguard ETF.

With all of that in mind, diversification might be the key to yielding robust long-term returns. Owning the Vanguard Information Technology ETF as part of a portfolio of other ETFs and individual stocks will give investors an opportunity to benefit from its ability to beat the market, while keeping the potential risks in check.

Anthony Di Pizio has no position in any of the stocks mentioned. The Motley Fool has positions in and recommends Advanced Micro Devices, Apple, Broadcom, CrowdStrike, Intel, Micron Technology, Microsoft, and Nvidia. The Motley Fool recommends Palo Alto Networks. The Motley Fool has a disclosure policy.