The United States is home to the world’s largest and most influential companies. These giants drive innovation in AI, cloud, social media, hardware, e-commerce, semiconductors, finance, and healthcare.
This article ranks the top 10 companies in the USA in 2025 by market cap, based on fully verified financial sources such as CompaniesMarketCap, Macrotrends, TradingEconomics, and Reuters. These companies dominate global technology, cloud computing, AI, social media, biotech, EVs, and beyond. In this guide, we break down their valuation, business model, growth engines, and why they matter for professionals, students, and investors
In this article, we break down the top 10 companies in the USA in 2025, ranked by market capitalization, and explain:
- What each company does
- How big they actually are (with data-backed numbers)
- Why they matter for the global economy and for future careers
Methodology:
Rankings are based on market capitalization as of mid-November 2025, sourced from CompaniesMarketCap, Macrotrends, TradingEconomics, Public.com, and other financial data providers. (Companies Market Cap). Market caps fluctuate daily, so think of this as a snapshot, not a permanent list.
1. NVIDIA Corporation (NVDA)
Industry: Semiconductors, AI & Data Center
Headquarters: Santa Clara, California
Nvidia became the most valuable company in the world in 2025, riding the explosive demand for AI chips powering data centers, cloud platforms, and generative AI models.
- Market cap: Around $4.5–4.9 trillion in November 2025(Companies Market Cap)
- Recently crossed the $5 trillion mark before a short correction—still ahead of Apple and Microsoft. (Reuters)
What drives Nvidia’s dominance
- GPU leadership: Its A100, H100, and next-gen GPUs are the default choice for training large AI models.
- Data center growth: Analysts expect tens of billions of dollars in quarterly revenue from AI-related data center sales. (Barron’s)
- Ecosystem moat: CUDA software, frameworks, and a strong developer ecosystem make it hard for competitors to displace Nvidia.
Why Nvidia matters
For students, professionals, and investors, Nvidia is the core case study for the AI era:
- How a once “niche” GPU player turned into a platform company
- How hardware + software + ecosystem can create a trillion-dollar value
Key references
- Market cap data – CompaniesMarketCap – Nvidia (Companies Market Cap)
- Market cap history – Macrotrends – Nvidia Market Cap (MacroTrends)
- News – Reuters – Nvidia hits $5 trillion valuation (Reuters)
2. Apple Inc. (AAPL)
Industry: Consumer Electronics, Software, Services
Headquarters: Cupertino, California
Apple remains one of the most valuable and profitable companies ever.
- Market cap: Roughly $4.0–4.1 trillion in November 2025. (StockAnalysis)
- FY 2025 revenue: About $416 billion, with the iPhone alone generating over $209 billion. (El País)
Growth engines
- Hardware: iPhone, Mac, iPad, Apple Watch, Vision devices
- Services: App Store, iCloud, Apple Music, Apple TV+, Apple Pay—their share of profits keeps growing.
- Capital returns: Over $511 billion returned to shareholders in the last five years via buybacks and dividends. (El País)
Why Apple matters
Apple is a masterclass in:
- Premium branding & ecosystem lock-in
- Hardware + software + services integration
- Using design and UX to justify premium pricing
Key references
- Market cap – StockAnalysis – Apple Market Cap (StockAnalysis)
- Market cap – Capital.com – Apple Market Cap (Capital.com)
- Earnings & shareholder returns – El País on Apple’s record payouts and 4T valuation (El País)
3. Microsoft Corporation (MSFT)
Industry: Software, Cloud Computing, AI
Headquarters: Redmond, Washington
Microsoft is the backbone of enterprise software and cloud.
- Market cap: Around $3.7–3.8 trillion in November 2025. (Companies Market Cap)
Core pillars
- Cloud (Azure): Second-largest cloud provider, tightly integrating AI into Azure services.
- Productivity: Office 365, Teams, LinkedIn, and Dynamics dominate corporate productivity stacks.
- AI leadership: Close partnership with OpenAI; integrating Copilot into Windows, Office, and GitHub.
Why Microsoft matters
For the future of work, Microsoft is at the center of:
- AI-powered productivity
- Cloud infrastructure
- Enterprise software transformation
Key references
- Market cap – Capital.com – Microsoft Market Cap (Capital.com)
- Market cap history – Macrotrends – Microsoft Market Cap (MacroTrends)
4. Alphabet Inc. (Google) (GOOG)
Industry: Internet, Digital Ads, Cloud, AI
Headquarters: Mountain View, California
Alphabet (Google’s parent company) is the world’s largest digital advertising platform and a central AI player.
- Market cap: Roughly $3.3–3.5 trillion as of November 2025. (Companies Market Cap)
- Revenue: Around $300+ billion annually, powered by Search, YouTube, and Google Cloud. (StockAnalysis)
What drives Alphabet
- Search & YouTube: Massive ad revenue, with YouTube also competing in streaming.
- Google Cloud: Fast-growing cloud platform with strong AI integration.
- “Other Bets”: Waymo (self-driving), health & life sciences, and various moonshot projects.
Why Alphabet matters
For marketing and business, Alphabet is:
- The core of performance marketing, SEO, and SEM
- A leader in AI research and infrastructure
- A case study in funding long-term moonshots from ad cash cows
Key references
- Market cap – CompaniesMarketCap – Alphabet (Companies Market Cap)
- Market cap & revenue – StockAnalysis – Alphabet Market Cap (StockAnalysis)
5. Amazon.com, Inc. (AMZN)
Industry: E-commerce, Cloud Computing, Logistics, AI
Headquarters: Seattle, Washington
Amazon is both a global e-commerce leader and the owner of AWS, one of the world’s biggest cloud platforms.
- Market cap: About $2.6–2.7 trillion (November 2025). (Companies Market Cap)
- Revenue: Close to $960+ billion annually. (StockAnalysis)
Key growth engines
- AWS (Amazon Web Services): Massive cloud business and profit center.
- Retail & marketplace: E-commerce, Prime, ads, and logistics network.
- AI push: New $38 billion deal with OpenAI and multi-billion dollar data center investments to regain AI/cloud momentum. (Reuters)
Why Amazon matters
Amazon shapes consumer behavior, supply chains, and cloud infrastructure. For career and business, it’s central to:
- E-commerce strategy
- Cloud-native products
- AI-enabled logistics and personalization
Key references
- Market cap – Public.com – Amazon Market Cap (Public)
- Market cap history – Macrotrends – Amazon Market Cap (MacroTrends)
- Revenue – StockAnalysis – Amazon Market Cap (StockAnalysis)
6. Meta Platforms, Inc. (META)
Industry: Social Media, VR/AR, Digital Ads
Headquarters: Menlo Park, California
Meta owns Facebook, Instagram, WhatsApp, and Threads, plus VR/AR hardware (Quest).
- Market cap: Around $1.5–1.6 trillion as of November 2025. (StockAnalysis)
Growth areas
- Social platforms: Billions of daily active users across apps.
- Advertising: One of the largest digital ad ecosystems globally.
- Metaverse & VR/AR: Heavy investment into VR devices and virtual worlds, though still long-term.
Why Meta matters
Meta is a real-time laboratory for:
- Consumer attention
- Social graph & community building
- Privacy, regulation, and content moderation challenges
Key references
- Market cap – StockAnalysis – Meta Platforms Market Cap (StockAnalysis)
- Market cap – Macrotrends – Meta Market Cap (MacroTrends)
7. Broadcom Inc. (AVGO)
Industry: Semiconductors, Infrastructure Software
Headquarters: San Jose, California
Broadcom is a major semiconductor and infrastructure software company, fueled by demand in networking, data centers, and telecom.
- Market cap: About $1.6–1.7 trillion in November 2025. (Trading Economics)
What Broadcom does
- Chips: For networking, storage, broadband, and wireless communications.
- Software: Enterprise infrastructure software after acquisitions like CA Technologies and VMware.
Why Broadcom matters
Broadcom is key for data traffic, telecom, and cloud infrastructure. It’s a good case study in:
- Growth by acquisition
- Balancing semiconductor cycles with subscription-like software revenue
Key references
- Market cap – Macrotrends – Broadcom Market Cap (MacroTrends)
- Market cap – Capital.com – Broadcom Market Cap (Capital.com)
8. Tesla, Inc. (TSLA)
Industry: Electric Vehicles, Energy Storage, AI & Robotics
Headquarters: Austin, Texas
Tesla is more than an EV company—it’s pushing into autonomous driving, AI, and humanoid robots.
- Market cap: Roughly $1.4–1.5 trillion in November 2025. (Companies Market Cap)
Key themes
- EV leadership: Huge volumes in EV sales globally.
- Autopilot & Full Self-Driving: AI software that Tesla hopes will support robotaxi networks.
- Optimus & robotics: Big ambitions in humanoid robots and AI applications.
In 2025, shareholders approved an unprecedented $1 trillion compensation package for CEO Elon Musk, tied to extreme performance targets (including multi-trillion-dollar valuations and robot/robotaxi milestones). (The Guardian)
Why Tesla matters
Tesla is a prime example of:
- Vision-driven leadership (and its risks)
- Vertical integration in manufacturing + software
- Using brand, community, and narrative as powerful business assets
Key references
- Market cap – Capital.com – Tesla Market Cap (Capital.com)
- Market cap history – Macrotrends – Tesla Market Cap (MacroTrends)
9. Berkshire Hathaway Inc. (BRK.A / BRK.B)
Industry: Diversified Holding Company, Insurance, Utilities, Manufacturing
Headquarters: Omaha, Nebraska
Berkshire Hathaway, led for decades by Warren Buffett, is a diversified conglomerate that owns or invests in dozens of businesses—from insurance and railroads to consumer brands.
- Market cap: Around $1.08–1.1 trillion in November 2025. (Companies Market Cap)
- Revenue: Over $500 billion annually. (StockAnalysis)
Key holdings
- Wholly owned businesses: BNSF Railway, energy utilities, manufacturing & retail companies.
- Equity portfolio: Major stakes in Apple and other blue-chip companies.
Why Berkshire matters
Berkshire is a long-term case study in:
- Value investing
- Capital allocation
- Building a multi-industry conglomerate with a strong culture
Key references
- Market cap – CompaniesMarketCap – Berkshire Hathaway (Companies Market Cap)
- Market cap & revenue – StockAnalysis – Berkshire Hathaway Market Cap (StockAnalysis)
10. Eli Lilly and Company (LLY)
Industry: Pharmaceuticals, Biotechnology
Headquarters: Indianapolis, Indiana
Eli Lilly has surged into the trillion-dollar conversation thanks to its blockbuster obesity and diabetes medications and a strong drug pipeline.
- Market cap: Around $910–960 billion, making it one of the top 12 most valuable companies in the world and one of the largest in the USA. (Companies Market Cap)
A recent market report highlighted Lilly’s market cap approaching $935 billion, driven by weight-loss drugs like Zepbound and Mounjaro and massive investments in new US manufacturing plants. (MarketWatch)
Key strengths
- Metabolic disease franchise: Obesity and diabetes treatments with huge global demand.
- Pipeline & M&A: Aggressive acquisitions and partnerships in gene therapy and other high-value areas. (Reuters)
Why Eli Lilly matters
Lilly shows how:
- A strong, focused pipeline can transform a “traditional” pharma company into a near-trillion-dollar giant.
- Healthcare and biotech are central to future economic and societal trends.
Key references
- Market cap – CompaniesMarketCap – Eli Lilly (Companies Market Cap)
- Market cap – Macrotrends – Eli Lilly Market Cap (MacroTrends)
- Obesity drugs & valuation – MarketWatch – Eli Lilly stock hits record on pricing deal (MarketWatch)
Summary Table: Top 10 Companies in the USA (Mid-November 2025)
Approximate market caps, rounded; values change daily.
Rank Company Approx. Market Cap (USD)Sector
- Nvidia ~$4.5–4.9T Semiconductors / AI
- Apple ~$4.0–4.1T Consumer Tech & Services
- Microsoft ~$3.7–3.8T Software & Cloud
- Alphabet (Google) ~$3.3–3.5T Internet, Ads, Cloud, AI
- Amazon ~$2.6–2.7T E-commerce & Cloud
- Meta Platforms ~$1.5–1.6T Social Media & Ads
- Broadcom ~$1.6–1.7T Semiconductors & Software
- Tesla ~$1.4–1.5T EVs, Energy, AI & Robotics
- Berkshire Hathaway ~$1.08–1.1T Diversified Conglomerate
- Eli Lilly ~$0.91–0.96T Pharmaceuticals & Biotech
Q1. Which is the No. 1 company in the USA by market cap in 2025?
As of mid-November 2025, Nvidia is the most valuable company in the world and in the USA by market capitalization, with a valuation of around $4.5–4.9 trillion. (Companies Market Cap)
Q2. How often does this ranking change?
Very frequently, market caps move daily with stock prices. Some companies may swap positions (2nd vs. 3rd, etc.), but these 10 names dominate the top of the list.
Q3. Are private companies included?
No. This list includes only publicly traded US companies because reliable data is available for them.
