Jasmine Birtles
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8 Best Semiconductor Stocks to Buy in 2026
Ruby Layram
17th Sep 2026
Semiconductors are the “picks and shovels” of the AI boom, the physical chips that make every AI model, data centre and device actually work. Demand has been so strong in 2026 that some of the industry’s biggest names are effectively sold out years in advance.
If you’re a beginner investor curious about the sector, here’s what’s driving it, six semiconductor stocks worth knowing, and how to approach investing in them sensibly.
Also read: The best semiconductor ETFS to buy in 2026
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Why Semiconductor Stocks Are Having a Moment
The AI boom needs chips- lots of them– and supply can’t keep up. Taiwan Semiconductor Manufacturing Company (TSMC), the world’s biggest contract chipmaker, has told major customers including Nvidia and Broadcom that it can’t meet all their demand for advanced AI processors, even after expanding capacity fivefold this year.
An estimated 85%+ of TSMC’s 2026–2027 capacity is aready booked. Elsewhere in the supply chain, Micron’s high-bandwidth memory (HBM) chips- essential for AI processors- are contractually sold out for the rest of the year.
A quick jargon note: a “semiconductor” (or “chip”) is a small electronic component that processes and stores information. Different companies specialise in different parts of the process- some design chips, some manufacture them, and some make the machines used to manufacture them. That’s why this list includes a mix of businesses, not just one type.
6 Semiconductor Stocks Beginner Investors Are Watching
1. Nvidia (NASDAQ: NVDA)
What it is: The dominant designer of graphics processing units (GPUs) used to train and run AI models, with an estimated 80–90% share of the AI accelerator market.
Why it’s relevant now: Full-year revenue hit $215.94 billion, up 65% year-on-year, with data centre revenue alone surging 92% to $75.2 billion in its latest quarter. Its newest Blackwell chips can sell for around $40,000 each.
Key risk: Nvidia’s valuation already prices in a lot of future growth, and it’s heavily reliant on a small number of huge customers (the major cloud providers) continuing to spend at current levels.
2. TSMC (NYSE: TSM)
What it is: The world’s largest contract chip manufacturer- most of the chips designed by Nvidia, Apple, AMD and others are physically made in TSMC’s factories.
Why it’s relevant now: TSMC’s order backlog for advanced chips now stretches into 2027, giving unusual visibility into future revenue for a manufacturing business.
Key risk: TSMC is based in Taiwan, which brings geopolitical risk (its relationship with mainland China) into what is otherwise a straightforward growth story.
3. Broadcom (NASDAQ: AVGO)
What it is: A diversified chip company that designs custom AI accelerator chips (XPUs) for large tech companies, alongside networking hardware and software.
Why it’s relevant now: Broadcom’s AI semiconductor revenue jumped 65% to $20 billion, driven by custom chips supplied to hyperscalers including Google and Meta.
Key risk: A meaningful chunk of growth depends on a handful of large customers building their own custom chips instead of buying off-the-shelf- a trend that could shift.
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4. ASML (NASDAQ: ASML / Euronext: ASML)
What it is: A Dutch company that makes EUV lithography machines — the only equipment in the world capable of printing the most advanced chip designs. Essentially a monopoly supplier to the entire industry.
Why it’s relevant now: ASML’s order backlog hit a record €38.8 billion, roughly 1.2 times its total 2025 revenue, with EUV capacity fully booked through 2027.
Key risk: ASML’s shares have been volatile — they fell over 14% at one point in 2026 on demand-timing concerns, a reminder that even monopoly businesses aren’t immune to sentiment swings.
5. Micron Technology (NASDAQ: MU)
What it is: The only US-headquartered manufacturer of high-bandwidth memory (HBM) chips, which power every major AI GPU currently in production.
Why it’s relevant now: Quarterly revenue nearly tripled to $23.86 billion, and HBM production is contractually sold out for roughly the next year — unusual pricing security in a historically volatile industry.
Key risk: Memory chips have a long history of boom-and-bust cycles; today’s shortage doesn’t guarantee tomorrow’s pricing power.
6. Arm Holdings (NASDAQ: ARM)
What it is: A Cambridge-founded chip designer that licenses processor designs to other companies rather than manufacturing chips itself, earning royalties on every chip shipped using its technology.
Why it’s relevant now: Full-year revenue rose 23% to $4.92 billion, and Arm has started designing its own AI inference chip for data centres — a notable shift beyond pure licensing. It’s also one of the few large-cap semiconductor names with real UK roots.
Key risk: The shares are down more than 40% from their highs and still trade at a rich valuation (around 79 times forward earnings), so plenty of future growth is already priced in.
Avoid Common Mistakes When Buying Stocks!
Don’t guess how to buy stocks. Learn exactly how to invest in stocks the right way, from a woman who’s done it for years!
What to Do Next
- Remember this is a cyclical, concentrated sector. Semiconductor demand has boom-and-bust history, today’s shortage-driven strength isn’t guaranteed to last forever.
- Consider a fund instead of picking one stock. A semiconductor or AI infrastructure ETF spreads your risk across the whole supply chain rather than betting on a single company’s execution.
- Watch valuations, not just growth stories. Several of these stocks already price in years of future growt- check the numbers rather than buying on hype alone.
- Use your ISA allowance. Many of these are US-listed but ISA-eligible on major UK platforms, so gains and any dividends can grow free of UK tax.
- Start small and diversify. Don’t let one sector, however exciting, dominate your whole portfolio.
Avoid Common Mistakes When Buying Stocks!
Don’t guess how to buy stocks. Learn exactly how to invest in stocks the right way, from a woman who’s done it for years!
Disclaimer: This article is for general information and educational purposes only and does not constitute regulated financial advice. Investing involves risk, and the value of your investments can go down as well as up, you may get back less than you put in. Do your own research and consider speaking to a regulated financial adviser before making investment decisions.
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