If you want to bet on the artificial intelligence boom without picking a single winner, semiconductors are the trade, and the iShares Semiconductor ETF (SOXX) is one of the two most popular ways to do it. It is up nearly 68% so far this year, a number that captures just how central chips have become to the AI story. But SOXX is not the fund most people assume it is. Here is a complete breakdown.
What is SOXX?
SOXX is an exchange-traded fund from iShares (BlackRock) that tracks the ICE Semiconductor Index, a basket of around 30 of the largest US-listed semiconductor companies. In one ticker, you own the chip designers, the foundries and the equipment makers that sit at the heart of the modern economy. It charges an expense ratio of about 0.35%, which is typical for a sector ETF, and pays almost no dividend (a yield near 0.2%), because this is a pure growth play, not an income one.
What is actually inside SOXX (it is not just Nvidia)
This is the most important and most misunderstood part. Many investors assume a semiconductor ETF is basically a Nvidia fund. SOXX is not. Its top holdings are spread across the sector:
- Micron Technology (MU): about 8.5%
- Advanced Micro Devices (AMD): about 8.1%
- Nvidia (NVDA): about 6.8%
- Intel (INTC): about 6.3%
- Broadcom (AVGO): about 6.1%
- Applied Materials (AMAT): about 5.8%
- KLA Corporation (KLAC): about 5.6%
- Lam Research (LRCX): about 4.9%
- Marvell Technology (MRVL): about 4.9%
- Taiwan Semiconductor (TSM): about 4.3%
Notice that Micron and AMD, not Nvidia, are the top two, and Nvidia is only the third-largest holding at under 7%. That is because the ICE index SOXX tracks caps and spreads its weights rather than letting one giant dominate.
There is another quiet strength here: the "picks and shovels" of the industry. Applied Materials, KLA and Lam Research together make up around 16% of the fund. These companies build the machines that make the chips, so they profit no matter which chip designer wins. That equipment exposure is a big part of what makes SOXX a bet on the whole semiconductor cycle, not just the hottest name of the moment.
Performance and the AI thesis
The reason SOXX is up nearly 68% this year is simple: artificial intelligence runs on chips. Every AI model, data center and accelerator is built on the products these companies design and manufacture, and demand has been enormous.
But the ride has been anything but smooth. Over the past year SOXX has traded in a huge range, from a low around $234 to a high near $656, before settling around $508. That is a reminder that semiconductors are one of the most cyclical and volatile corners of the market. They can double in a boom and halve in a bust, often faster than investors expect.
Curious how the fund's biggest names stack up on their own? Our Nvidia stock analysis breaks down the numbers behind the most talked-about chip stock.
SOXX vs SMH: which semiconductor ETF is better?
If you research chip ETFs, you will quickly run into the VanEck Semiconductor ETF (SMH), SOXX's main rival. They sound identical but differ in one key way: concentration.
- SMH tracks a more top-heavy index, so Nvidia and Taiwan Semiconductor make up a much larger share of the fund. It is a more concentrated bet on the biggest winners.
- SOXX spreads its weights more evenly across roughly 30 names, as the holdings above show. It is more diversified within the sector.
Neither is objectively better. If you want maximum exposure to the megacap leaders, SMH leans that way and has often outperformed when Nvidia leads. If you prefer a broader, less concentrated slice of the whole industry, SOXX is the more balanced choice. Both charge similar fees.
The risks you are taking
SOXX is exciting, but it concentrates several risks in one fund:
- Sector concentration: everything you own is semiconductors. When chips fall out of favour, there is nowhere to hide inside the fund.
- Cyclicality: the chip industry runs in sharp boom-and-bust cycles tied to inventory, capital spending and demand.
- Valuation: after a 68% run, the group is priced for a lot of good news. Buying at these levels is very different from buying near the lows.
- Geopolitics: export controls, US-China tensions and Taiwan's central role in manufacturing all hang over the sector.
- No income: with a yield near 0.2%, you are relying entirely on price appreciation.
Where This Leaves Investors
SOXX is one of the cleanest single-ticker ways to own the artificial intelligence and semiconductor boom, and its more balanced construction, with real weight in equipment makers and no single name above 9%, makes it a genuine bet on the whole industry rather than one stock. But it is volatile, cyclical, and no longer cheap after a huge run. If you believe the multi-year AI and chip story, SOXX is a reasonable core way to play it, ideally bought gradually rather than all at once. If you want a more concentrated bet on the biggest winners, SMH is the alternative to compare it against. Either way, size the position for the volatility that comes with owning the most exciting and most unpredictable part of the market.
This article is for informational purposes only and is not financial advice. Figures are approximate and change with the market. Always do your own research before investing.Related Reading
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