---
title: "Cybersecurity stocks were the top performers in the S&P 500 on Monday amid escalating AI fears; CrowdStrike rose 14%, Palo Alto Networks 13%, and Fortinet 9% (Britney Nguyen/MarketWatch)"
type: signal
url: https://frontiernewswire.com/s/cybersecurity-stocks-were-the-top-performers-in-the-s-p-500-on-monday-59c7c57c
published: 2026-09-15T01:10:02.000Z
byline: "Source: TECHMEME"
---

# Cybersecurity stocks were the top performers in the S\&P 500 on Monday amid escalating AI fears; CrowdStrike rose 14%, Palo Alto Networks 13%, and Fortinet 9% (Britney Nguyen/MarketWatch)

Source: TECHMEME · Published 2026-09-15 · Canonical: https://frontiernewswire.com/s/cybersecurity-stocks-were-the-top-performers-in-the-s-p-500-on-monday-59c7c57c

Britney Nguyen / MarketWatch : Cybersecurity stocks were the top performers in the S\&P 500 on Monday amid escalating AI fears; CrowdStrike rose 14%, Palo Alto Networks 13%, and Fortinet 9% — The software sector outperformed the chip sector to a historic degree in the face of escalating AI fears

In this story: [CrowdStrike](https://frontiernewswire.com/companies/crowdstrike), [Palo Alto Networks](https://frontiernewswire.com/companies/palo-alto-networks)

## Sources

- [Read the original at TECHMEME](https://www.techmeme.com/260914/p42#a260914p42)

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