This is a list of companies headquartered or formerly headquartered in San Diego, California. Notable companies and corporations headquartered outside San Diego, but within San Diego County include:

Feb 2, 2026 · We're tracking Shield AI, Netradyne and 918 more companies in San Diego from the F6S community. San Diego is the 29th most popular location globally to start a company or startup and …

6 days ago · The most valuable company in San Diego, California is Qualcomm (QCOM) with a market cap of $150.965B, followed by Realty Income (O) and Sempra (SRE). Last updated Feb 09, 2026.

Oct 5, 2021 · Here are 30 companies contributing to this momentum and fueling San Diego’s rise as an innovative force. Founded: 1985. Focus: E-commerce + Logistics. Number of employees: 5,001-10,000.

Apr 15, 2025 · Companies can be categorized as public or private. Companies are generally organized to earn a profit from business activities, but some may be structured as nonprofit charities. They may …

Feb 2, 2026 · San Diego’s technology ecosystem spans diverse sectors – from software development and biotechnology to wireless communications, robotics, and defense.

Here’s everything you need to know about San Diego’s biggest companies. 1. Qualcomm is one of San Diego’s largest publicly traded companies, and its technology might go a lot further than you think.

The meaning of COMPANY is association with another : fellowship. How to use company in a sentence.

BD is one of the world’s largest pure-play medical technology companies with a Purpose of advancing the world of health™ by driving innovation across medical essentials, connected care, biopharma …

In this report, we break down the top-performing companies headquartered in San Diego, with revenue, market cap and employment stats that reflect the city’s growing global reach.