Nvidia (NVDA +0.10%) is the largest company in the technology sector and overall in March 2026. Apple (AAPL -0.83%) is close behind in second, and Microsoft (MSFT +1.40%) is in third. The biggest tech companies by market cap are spread across a range of industries, including consumer electronics, semiconductor manufacturing, cloud computing, and e-commerce.
The largest companies by market cap in the technology sector
(Editor's note: Rankings are as of March 4, 2026.)
| Name and ticker | Market cap | Current price | Industry |
|---|---|---|---|
| Nvidia (NASDAQ:NVDA) | $4.4 trillion | $183.23 | Semiconductors and Semiconductor Equipment |
| Apple (NASDAQ:AAPL) | $3.9 trillion | $260.34 | Technology Hardware, Storage and Peripherals |
| Microsoft (NASDAQ:MSFT) | $3.0 trillion | $410.68 | Software |
| Taiwan Semiconductor Manufacturing (NYSE:TSM) | $1.9 trillion | $353.86 | Semiconductors and Semiconductor Equipment |
| Broadcom (NASDAQ:AVGO) | $1.5 trillion | $333.07 | Semiconductors and Semiconductor Equipment |
| ASML (NASDAQ:ASML) | $539.3 billion | $1,368.07 | Semiconductors and Semiconductor Equipment |
| Micron Technology (NASDAQ:MU) | $451.1 billion | $396.62 | Semiconductors and Semiconductor Equipment |
| Oracle (NYSE:ORCL) | $437.9 billion | $154.79 | Software |
1. Nvidia
- Market cap: $4.45 trillion (as of March 4)
- Revenue (TTM): $215.9 billion
- Gross profit (TTM): $153.5 billion
- Five-year annualized return: 69.76%
- Year founded: 1993
TTM = trailing 12 months.
NASDAQ: NVDA
Key Data Points
Nvidia (NVDA +0.10%) is a leader in the design and development of graphics processing units (GPUs). Its GPUs first gained popularity for use in video gaming and computers, and later for mining cryptocurrency.
In recent years, Nvidia GPUs have been instrumental in training artificial intelligence (AI) models, driving up demand (and Nvidia's share price). Last year, Nvidia became the first company to hit market caps of $4 trillion and $5 trillion.
2. Apple
- Market cap: $3.86 trillion (as of March 4)
- Revenue (TTM): $435.6 billion
- Gross profit (TTM): $206.2 billion
- Five-year annualized return: 17.27%
- Year founded: 1976
NASDAQ: AAPL
Key Data Points
Apple (AAPL -0.83%) is a consumer electronics company with a long list of popular products, including the iPhone, MacBook, iPad, Apple Watch, and AirPods. It became the world's biggest company in August 2011 and has spent quite a bit of time at the top since then. However, it hasn't all been smooth sailing for Apple in recent years.
The Apple Vision Pro, a mixed-reality headset, posted disappointing sales numbers. The release of Apple Intelligence, an AI technology, has also gotten mixed reviews, and the company is embroiled in an antitrust lawsuit with the U.S. Department of Justice.
3. Microsoft
- Market cap: $3.01 trillion (as of March 4)
- Revenue (TTM): $305.5 billion
- Gross profit (TTM): $209.5 billion
- Five-year annualized return: 13.09%
- Year founded: 1975
NASDAQ: MSFT
Key Data Points
Microsoft (MSFT +1.40%) is the largest software company, and it's most well-known for the Windows operating system, which is used on about 67% of the world's desktop computers. In addition, it offers a wide range of products, including Microsoft Office software, Azure cloud computing, and Xbox video game systems.
Like most major tech companies, Microsoft has invested heavily in AI. In 2019, it started investing in OpenAI and has since developed Microsoft Copilot, an AI-powered digital assistant.
4. Taiwan Semiconductor Manufacturing
- Market cap: $1.85 trillion (as of March 4)
- Revenue (TTM): $120.4 billion*
- Gross profit (TTM): $72.1 billion*
- Five-year annualized return: 25.57%
- Year founded: 1987
*Converted from New Taiwan dollars.
NYSE: TSM
Key Data Points
Taiwan Semiconductor Manufacturing (TSM -1.00%) is a global leader in the research, design, and manufacture of semiconductors. It produces chips for many of the major tech companies, including Apple, its biggest customer.
This semiconductor company is investing heavily in its U.S. operations. As part of a U.S.-Taiwan trade deal reached in January 2026, TSMC has agreed to invest $250 billion to boost semiconductor, energy, and AI production in the U.S.
5. Broadcom
- Market cap: $1.51 trillion (as of March 4)
- Revenue (TTM): $63.9 billion
- Gross profit (TTM): $43.3 billion
- Five-year annualized return: 49.75%
- Year founded: 1961 (HP Associates), 2005 (Avago Technologies), 2016 (Broadcom Limited)
NASDAQ: AVGO
Key Data Points
NASDAQ: ASML
Key Data Points
Dutch tech giant ASML (ASML -2.24%) provides semiconductor equipment systems. Specifically, it manufactures photolithography machines that other companies use to make the most advanced semiconductors.
While ASML is based in the Netherlands, it operates worldwide, including in Europe, the U.S., and Asia. Some of its largest clients include Taiwan Semiconductor Manufacturing, Intel (INTC +0.78%), and Samsung (SSNL.F +55.02%).
8. Micron Technology
- Market cap: $451.07 billion (as of March 4)
- Revenue (TTM): $42.3 billion
- Gross profit (TTM): $19.2 billion
- Five-year annualized return: 34.29%
- Year founded: 1978
NASDAQ: MU
Key Data Points
Micron Technology (MU -0.93%) is a memory and storage company with products that include DRAM solutions, flash-based SSDs, and multichip packages. The company's high-bandwidth memory (HBM) products have become a crucial component of AI infrastructure.
Based in Boise, Idaho, Micron has locations around the world, including Taiwan, Japan, and China. In January 2026, it committed $24 billion to expand operations in Singapore.
9. Oracle
- Market cap: $437.93 billion (as of March 4)
- Revenue (TTM): $61.0 billion
- Gross profit (TTM): $41.8 billion
- Five-year annualized return: 18.98%
- Year founded: 1977
NYSE: ORCL
Key Data Points
Oracle (ORCL +1.64%) is a database software and cloud computing company. It has a substantial enterprise customer base, with approximately 430,000 customers in 175 countries. Recently, Oracle has prioritized AI integration, adding a partnership with Nvidia.
Along with OpenAI and SoftBank (OTC:SFTB.Y), Oracle is a technology partner in the Stargate Project. The venture is expected to invest $500 billion into building AI infrastructure.
10. SK Hynix
- Market cap: $394.51 billion* (as of March 4)
- Revenue (TTM): $57.5 billion*
- Gross profit (TTM): $31.8 billion*
- Five-year annualized return: 43.0%
- Year founded: 1983
*Converted from South Korean won.
SK Hynix (OTC:HXSCL) is one of the world's leading memory makers and semiconductor suppliers. While based in South Korea, this company also has production sites in China and research and development (R&D) facilities in the U.S., Taiwan, Italy, and Belarus.
Success with AI memory chips has delivered significant growth for SK Hynix recently. In 2025, it overtook rival Samsung in operating profit for the first time.
Technology sector takeaways for investors
The tech sector is an exciting one, and it's not unusual for companies in this sector to deliver market-beating returns. Most companies on this list have outperformed the S&P 500 over the last five years. Nvidia, Broadcom, and Micron have done particularly well. The tradeoff is that tech stocks tend to be volatile and frequently trade at high valuations.
There's a greater risk associated with investing in tech stocks, and it's important to carefully research growth prospects for any you're considering. Even with the risk, technology companies are well worth it for the potential returns. After all, many of the world's most successful companies are in the tech sector.
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About the Author
Lyle Daly has positions in ASML, Broadcom, and Nvidia. The Motley Fool has positions in and recommends ASML, Advanced Micro Devices, Apple, HP, Intel, International Business Machines, Micron Technology, Microsoft, Nvidia, Oracle, and Taiwan Semiconductor Manufacturing. The Motley Fool recommends Broadcom. The Motley Fool has a disclosure policy.
