CrowdStrike shares surged Monday after the cybersecurity giant was added to the S&P 500 index. As of this writing Monday morning, CrowdStrike's stock price was up 8 percent to $376.96 a share. [Related: Analysis: CrowdStrike Strikes Back In Platform, SIEM Wars ] Austin-based CrowdStrike has become one of the few pure-play cybersecurity vendors to gain a spot on the benchmark index. Others include Palo Alto Networks, which was added to the S&P 500 in June 2023, and Fortinet, which joined the index in October 2018. The addition of CrowdStrike to the S&P 500 comes after the company last week released the results for the first quarter of its fiscal 2025, ended April 30, which breezed past Wall Street expectations for both revenue and earnings. Revenue grew 33 percent during the quarter from the prior year, reaching $921 million and beating the analyst consensus estimate of $904.6 million. The company also increased its fiscal year 2025 revenue guidance.