Bill Ackman has been quietly buying Microsoft since February, when AI fears were dragging the stock | Fortune Home Pershing Square Capital Management, the hedge fund run by the billionaire investor, has built a new position in the software giant. And in typical Ackman fashion, he disclosed the stake in his trademark style: a lengthy post on X on Friday ahead of his firm’s quarterly 13F filing (a required filing for institutional investment managers with over $100 million in assets). He did not disclose the size, but called it a “core holding.” Pershing started accumulating shares in February, after Microsoft’s stock fell about 10% the day after Q2 earnings, with a 1% lower-than-expected cloud growth alongside a surge in capital spending. “We were able to establish our position at a valuation of 21 times forward earnings, broadly in line with the market multiple and well below Microsoft’s trading average over the last few years,” Ackman wrote in the post.
Published: May 15, 2026 3:14 pm
Source: Fortune — Read original