Cybersecurity Stocks: 10 Biggest Companies



Cybercrime is a growing concern, and it’s estimated that the annual cost of fighting cyber crime will reach US$10.5 trillion by 2025. Cybersecurity companies are working to address the challenge.

As investor interest in this potentially lucrative sector increases, the Investing News Network (INN) is profiling the top 10 biggest cybersecurity companies by market cap from eSecurity Planet’s list of the top cybersecurity companies to watch.

The list from eSecurity Planet features 20 privately held and publicly traded cybersecurity companies across a range of stock exchanges. The firm employed criteria such as user reviews, product features and benefits, analyst reports, independent security tests and use cases to evaluate companies in the cybersecurity sector.


The largest cybersecurity companies by market cap shown below are all listed on the NASDAQ and NYSE. Stock data was current as of market close on January 9, 2025.

1. Microsoft (NASDAQ:MSFT)

Market cap: US$3.16 trillion
Share price: US$424.56

The largest cybersecurity company by market cap is Microsoft. The tech giant is a major player in the cloud security market, which includes cloud native application protection platform (CNAPP) products and services. In fact, Microsoft is the largest CNAPP solution provider, according to KeyBanc Capital.

Prominent cybersecurity firm Security Risk Advisors recently became a member of the Microsoft Intelligent Security Association.

2. Broadcom (NASDAQ:AVGO)

Market cap: US$3.16 trillion
Share price: US$424.56

Global technology firm Broadcom has built a large portfolio of embedded and mainframe security solutions, as well as payment authentication software.

The company broadened its offerings with the Symantec Enterprise Cloud in November 2019 with the acquisition of the enterprise software division of Symantec, which has since changed its name to Gen Digital (NASDAQ:GEN). Broadcom’s Symantec offerings include secure access service edge technologies and zero-trust security.

3. Cisco Systems (NASDAQ:CSCO)

Market cap: US$235.78 billion
Share price: US$59.20

For a number of years now, Cisco Systems has increasingly invested in boosting its cybersecurity services. Today, the company offers an array of products for cloud security, endpoint security and security analytics. To address the cybersecurity skills shortage, Cisco offers certification programs for IT professionals.

In response to rising security risks in AI-powered applications, Cisco acquired Robust Intelligence, a company specializing in protecting AI systems from vulnerabilities and attacks, in September 2024.

4. IBM (NYSE:IBM)

Market cap: US$206.36 billion
Share price: US$223.18

IBM’s security division offers customers an advanced and integrated portfolio of enterprise security products and services. IBM X-Force helps businesses and organizations integrate security solutions into their everyday…



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