iShares Global Tech ETF (IXN)

The iShares Global Tech ETF (IXN, NASDAQ) is a passively managed fund that holds technology companies from around the world, spanning software makers, semiconductor companies, internet platforms, hardware manufacturers, and the infrastructure firms that support digital economies.

The technology sector and why it dominates modern portfolios

Over the past two decades, technology companies have become the largest sector in global stock markets by capitalization. That shift reflects a fundamental truth: the world has moved toward digital solutions across almost every domain — communication, commerce, finance, entertainment, medicine, manufacturing. Companies that build or enable that digital infrastructure have grown enormously profitable and valuable, and they continue to drive innovation at a pace no other sector matches.

IXN captures that transformation by tracking the S&P Global 1200 Information Technology Index, a cap-weighted basket of the world’s largest technology companies. In practice, that means the fund is heavily weighted toward mega-cap U.S. technology firms — Apple, Microsoft, Nvidia, Meta, Amazon, and Alphabet dominate because they are the largest by market value. But IXN also holds semiconductor makers from Taiwan and South Korea, software companies from across Europe, and a growing cadre of technology firms from emerging markets.

The index is constructed to be broad: it includes companies that make chips, those that write software, those that run internet platforms, those that manufacture hardware, and those that provide supporting infrastructure. That breadth means IXN’s performance depends on the health of the entire digital ecosystem, not just one segment.

The subcategories that make up “technology”

Understanding what drives IXN’s returns requires understanding the different kinds of companies inside it. Semiconductor manufacturers — the largest single subsector — design and build the chips that power everything from smartphones to data centers. These companies are capital-intensive and cyclical: when the economy is strong and companies are upgrading equipment, semiconductor demand surges and prices rise. When the cycle turns, demand collapses and prices fall sharply. Semiconductor companies are also concentrated: Taiwan Semiconductor Manufacturing, Samsung, and a handful of others have enormous influence on the world’s computing capacity.

Software companies — operating-system makers, database firms, cloud-services providers, cybersecurity companies, and enterprise applications — typically have much higher profit margins than hardware makers. Once a piece of software is written, the marginal cost of serving one more customer is often near zero, which is why software profits can be extraordinarily high. Software companies are also “sticky”: a large organization that has built its operations around a particular software platform faces high switching costs, creating recurring revenue.

Internet platforms — companies that run marketplaces, social networks, search engines, and streaming services — win by network effects: the more users they have, the more valuable they become, and the easier it is to keep adding users. These tend to be highly profitable at scale, though they require massive upfront investment in infrastructure and user acquisition.

Hardware makers — including Apple, though Apple is more than hardware — design and manufacture physical devices. Hardware tends to have lower profit margins than software but can achieve enormous scale and creates a channel for selling services and software to the same customer base.

The final category, infrastructure, includes companies that run data centers, manage telecommunications networks, and provide the networking and cloud-computing backbone that the digital economy runs on.

Concentration and composition

IXN’s largest holdings are invariably the largest technology companies by market value. On any given day, the top five to ten holdings likely account for 30–40 percent or more of the fund’s assets. That concentration means the fund’s returns are substantially driven by a handful of mega-cap firms. A significant move in Apple’s stock, a big earnings miss at Microsoft, a shift in Nvidia’s business, or a change to regulatory treatment of Meta will move the whole fund substantially.

That concentration is a feature of cap-weighted indexing: it reflects the actual distribution of market value. But it means IXJ is not a diversified bet on technology as much as it is a bet on the largest technology companies, with exposure to the rest along the way.

Why technology stocks are volatile

Technology companies tend to command higher price-to-earnings multiples than companies in other sectors because investors expect faster growth. But that means technology is also more sensitive to changes in interest rates and growth expectations. When interest rates rise sharply or economic growth expectations fall, technology stocks often decline more than the overall market because the future profits those investors are betting on get discounted more heavily.

Technology is also unforgiving of execution failures. Because so much of a technology company’s value is based on market expectations of future growth — not current earnings — a single bad quarter or a missed product launch can drive a significant stock decline. That volatility attracts some investors and repels others, but it is baked into the category.

Concentration of value in a handful of stocks is also a source of volatility for IXN. When those mega-cap firms move together — as often happens during broad market selloffs — the fund’s decline is outsized. Conversely, during rallies when growth expectations improve, technology often leads the way.

How technology changes the fund

One often-overlooked source of change in IXN is the shifting definition of “technology.” Decades ago, technology meant computer manufacturers and software makers. Today, the category has expanded to include companies that use technology pervasively but might not have been classified as technology firms in the past — companies in healthcare, finance, transportation, retail, and dozens of other industries are being reclassified and moving into the index. That slow expansion means the category is not fixed; it evolves as the boundary between “technology” and “old economy” continues to blur.

Researching IXN

Any investor considering IXN should start with BlackRock’s prospectus and factsheet. Watch the earnings and product announcements from the largest holdings: those companies move the fund far more than smaller ones. Understand the semiconductor cycle — periods of oversupply or strong demand move that subsector, which pulls the whole fund. Monitor interest-rate expectations and growth forecasts, since technology is more sensitive to those than most sectors. And keep an eye on regulatory developments affecting large technology companies, which can move the entire complex.

IXN is useful for investors who want exposure to the global technology sector without picking individual stocks, and for those who believe technology companies will continue to drive growth and innovation. It is also a way to diversify beyond U.S. technology by gaining exposure to firms in other developed economies and emerging markets. But because technology is concentrated, volatile, and sensitive to growth expectations, IXN should be sized carefully within a broader portfolio.