A ranked look at the ten biggest U.S. computer hardware companies by market capitalization, from Apple's towering scale to Fortinet's security-focused footprint.
A Sector Built on Chips and Cables
Computer hardware is the physical backbone of the digital economy — the phones, switches, servers, drives, and firewalls that keep data moving. In the United States, this corner of the Technology & Electronics sector spans companies making everything from consumer devices to the storage and networking gear inside the world's data centers. The Computer Hardware industry's biggest players, ranked here by market capitalization from the latest 2026 nightly market-data refresh, show just how wide that range can be.
Apple Leads by a Wide Margin
At the very top sits Apple Inc., the Cupertino, California-based maker of the iPhone, Mac, and a sprawling ecosystem of devices and services. With a market capitalization of $4.5T and FY2025 revenue of $416.2B, Apple isn't just the largest hardware company in the country — it dwarfs every other name on this list combined.
Networking Giants Hold the Middle Tier
Behind Apple, the ranking shifts toward companies that build the plumbing of corporate and internet networks. Cisco Systems, Inc., headquartered in San Jose, California, holds the #2 spot with a market cap of $479.4B and FY2025 revenue of $56.7B, built on decades of routers, switches, and networking infrastructure sold to businesses worldwide.
IBM's Long Reach
Just behind Cisco is INTERNATIONAL BUSINESS MACHINES CORP, based in Armonk, New York. IBM ranks #3 with a market cap of $267.7B and FY2025 revenue of $67.5B, reflecting its continued presence across enterprise hardware, software, and consulting.
Dell's PC and Server Footprint
Dell Technologies Inc., headquartered in Round Rock, Texas, takes the #4 position with a market cap of $256.2B. Dell posted FY2026 revenue of $113.5B, the highest revenue figure of any company in this ranking outside Apple, underscoring its scale in PCs, servers, and enterprise infrastructure.
Storage Specialists Cluster Together
A trio of storage-focused companies occupies the middle of the list. Sandisk Corp, based in Milpitas, California, ranks #5 with a market cap of $230.9B and FY2025 revenue of $7.4B, built on flash memory and storage products.
Seagate and Western Digital
Seagate Technology Holdings plc, headquartered in Singapore, ranks #8 with a market cap of $191.7B and FY2025 revenue of $9.1B. WESTERN DIGITAL CORP, based in San Jose, California, follows closely at #9 with a market cap of $176.4B and FY2025 revenue of $9.5B — together, the two remain central to the hard-drive and data-storage business that underpins cloud computing.
Security-Driven Hardware Makers
Rounding out the list are companies whose hardware is built around network defense. Palo Alto Networks Inc, headquartered in Santa Clara, California, ranks #6 with a market cap of $221.7B and FY2025 revenue of $9.2B.
Arista and Fortinet
Arista Networks, Inc., also based in Santa Clara, California, ranks #7 with a market cap of $194.3B and FY2025 revenue of $9.0B, supplying networking equipment for large-scale data centers. At #10, Fortinet, Inc., headquartered in Sunnyvale, California, closes out the ranking with a market cap of $106.0B and FY2025 revenue of $6.8B, reflecting the growing weight of cybersecurity hardware within the broader industry.
What the List Reveals
Taken together, this ranking shows an industry anchored by one company of extraordinary scale, supported by a diverse set of networking, storage, and security specialists that keep American computer hardware competitive across the entire technology stack.
