ServiceNow Stock Plunges to Lead S&P 500 Decliners on Monday. Here's Why.

Core Insights - ServiceNow's shares declined significantly following reports of a potential acquisition of Armis for up to $7 billion, which would mark the largest acquisition in ServiceNow's history [1][5] - The acquisition would provide ServiceNow with access to Armis's cybersecurity platform, enhancing its capabilities in managing connected devices [2][5] - Investors reacted negatively to the news, likely due to concerns over the high cost of the acquisition, contributing to a challenging year for ServiceNow's stock performance [3] Company and Industry Summary - Armis, currently owned by Insight Partners, was acquired for $1.1 billion in 2020, indicating a substantial increase in its valuation if the current deal proceeds [4] - ServiceNow's stock has experienced a decline of over 11% recently, reaching its lowest level since April, and has lost more than 25% of its value since the beginning of 2025 [2][3] - The acquisition interest comes amid a trend in the tech industry, with other companies like Alphabet and Palo Alto Networks also pursuing cybersecurity acquisitions [4]