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Cybersecurity

Security software and platforms.

Cybersecurity keeps growing whatever the IT budget does — breaches, ransomware and cloud migration make it non-discretionary. This collection covers software platforms and specialists across endpoint, network, cloud, identity and vulnerability management.

20 stocksSorted by market capUpdated 22 Aug 2026

Why it matters

Security software and platforms. Technology themes move quickly, so the best use is to separate real revenue exposure from broad market excitement.

What to check next

Look for clear product demand, customer concentration, margins, reinvestment needs and whether the company has pricing power in the theme.

Main risk

Fast narratives can outrun fundamentals; competition, capex cycles and valuation compression matter even when the long-term theme is real.

Company Market Market Cap Reward Risk Yield
Palo Alto Networks IncPANW$313.2B7356
Crowdstrike Holdings IncCRWD$220.9B4872
Fortinet IncFTNT$117.4B7530
Cloudflare IncNET$112.4B6464
Zscaler IncZS$27.3B5672
Okta IncOKTA$25.6B7645
F5 Networks IncFFIV$22.8B6445
Rubrik, Inc.RBRK$21.0B6872
CyberArk Software LtdCYBR$20.6B5544
Akamai Technologies IncAKAM$18.0B5246
Gen Digital Inc.GEN$17.0B66591.7%
Check Point Software Technologies LtdCHKP$13.4B5345
SailPoint, Inc. Common StockSAIL$11.1B6259
SentinelOne IncS$7.9B7056
Qualys IncQLYS$6.4B7756
Varonis SystemsVRNS$5.2B6167
Tenable Holdings IncTENB$4.2B6166
Rapid7 IncRPD$876.2M7072
NCC Group plcNCC£386.6M49423.3%
GB Group plcGBG£367.6M44531.9%

Frequently asked questions

What is the Cybersecurity collection?

Security software and platforms. It currently holds 20 stocks, each rated by Openbook's Reward and Risk scores. Cybersecurity keeps growing whatever the IT budget does — breaches, ransomware and cloud migration make it non-discretionary.

How are Cybersecurity stocks selected?

Cybersecurity is a curated basket of companies with direct exposure to this theme, screened against live market data and ranked by market capitalisation.

How often is the Cybersecurity list updated?

It is rebuilt from live market data, so the constituents and their rankings update as prices and company fundamentals change — there is no fixed, hand-edited list.

How should I use the Reward and Risk ratings?

Openbook's Reward rating combines a stock's growth, momentum, profitability and valuation into a single 0–100 score, and the Risk rating scores financial strength, volatility and size. Use them to compare names within this theme — broadly, a higher Reward alongside a lower Risk is more attractive. They are quantitative research signals, not investment advice.

Openbook Reward and Risk ratings and factor scores are quantitative signals for research, not investment advice. Data may be delayed. Some US-listed names carry partial factor coverage.