On Dec. 15, 2025, trading screens focused on ServiceNow (NYSE: NOW) turned a deep shade of red. Shares of the enterprise software giant dropped by more than 11.5%, leading the S&P 500’s list of daily decliners. The catalyst for this sudden volatility was a report that the company is in advanced talks to acquire cybersecurity firm Armis for approximately $7 billion.
For investors accustomed to ServiceNow’s steady ascent, the double-digit drop was a jarring wake-up call. The market’s reaction appears to be a classic case of acquirer’s indigestion. Investors are grappling with the sticker shock of the company’s largest acquisition to date. However, looking past the immediate price tag reveals a potential strategic masterstroke. This move is about more than the company buying more revenue; it represents a calculated effort to secure the entire attack surface of the artificial intelligence (AI) driven enterprise.
