Bill Ackman says he built Microsoft position in first quarter

Bill Ackman's Pershing Square Capital Management has built a position in Microsoft, the billionaire hedge fund manager said Friday in a post on X.

CNBC • May 15, 2026

Bill Ackman's Pershing Square discloses Microsoft stake, touts ‘deeply embedded' software

Ackman, 60, wrote in a lengthy X post that Microsoft operates “two of the most valuable franchises in enterprise technology” in the form of its 365 productivity apps, which include Word and Excel, and its Azure cloud-computing business.

New York Post • May 15, 2026

Bill Ackman Just Bought Microsoft Stock — Here's Why It Could Be His Biggest Bet Yet

The market has been anything but subtle in its treatment of Microsoft ( NASDAQ:MSFT | MSFT Price Prediction ) in 2026.

24/7 Wall Street • May 15, 2026

Microsoft Pops as Bill Ackman Takes New Position

Microsoft (NASDAQ:MSFT) stock is moving higher this morning, after Pershing Square's Bill Ackman revealed a new stake in the tech giant, calling the company an attractive AI play following its post-earnings pullback.

Schaeffers Research • May 15, 2026

Bill Ackman just disclosed a new position in this stock

Bill Ackman, a billionaire investor and chief executive of Pershing Square Capital Management, stated on May 15 that his hedge fund would reveal a new stake in Microsoft (NASDAQ: MSFT).

Finbold • May 15, 2026

Bill Ackman Catches Another Falling Magnificent Seven Knife — Will It Work This Time?

Legendary investor Bill Ackman is known for years of activist investing with big stakes in companies and pushing for changes. In recent quarters, Ackman has shown a preference to buying Magnificent Seven stocks he deems on sale.

Benzinga • May 15, 2026

Ackman Says Pershing Square Has Taken New Stake in Microsoft

The investor says the tech company is underpriced, and he will disclose the stake in regulatory filings later Friday.

WSJ • May 15, 2026

Billionaire investor Bill Ackman reveals new bets on Microsoft

Bill Ackman announced a new investment in Microsoft. The billionaire investor said both his hedge fund and new closed-end fund had taken positions.

Business Insider • May 15, 2026

Bill Ackman Says He Bought the Dip in Microsoft Stock

Billionaire hedge fund manager Bill Ackman said his firm had started a new position in Microsoft.

Barrons • May 15, 2026

Bill Ackman's Pershing Square USA Is Now Public, and This Director Just Bought 10,000 Shares

Director Bruce Herring bought 10,000 common stock shares for a transaction value of ~$434,000 on May 4, 2026. Post-transaction, direct ownership represents 0.025% of shares outstanding.

The Motley Fool • May 7, 2026