Bill Ackman's Pershing Square Capital Management has taken a new position in Microsoft, with the billionaire investor disclosing the stake on X Friday. Ackman said the tech giant's shares have become undervalued following their recent decline, creating an attractive entry point for his hedge fund.

The activist investor specifically cited Microsoft's M365 franchise as being underappreciated by the market. Ackman pointed to the software suite's "deeply embedded role across enterprises" and its "highly attractive price-value proposition" as reasons for optimism about the company's resilience despite recent market volatility.

Ackman indicated he will provide full details of the position size in upcoming regulatory filings. This move represents a fresh bet on the enterprise software leader after its shares faced pressure in recent weeks. The stake could pressure Microsoft management to focus on maximizing shareholder value through the company's dominant cloud and productivity software businesses.