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Microsoft’s US$570 Billion Rout Signals Investor Anxiety Over AI Spending Boom

By Tim Clark4 min read
FILE PHOTO: The logo of Microsoft is seen on the exterior of their offices in Herzliya, near Tel Aviv, Israel December 27, 2022. REUTERS/Rami Amichay

New York, 29 June 2026 – Microsoft is heading for its worst monthly stock performance since 2000 after a sharp selloff erased about US$570 billion in market value, as investors reassessed the cost and payoff timeline of the company’s artificial intelligence expansion.

The stock has fallen more than 20% in June, placing Microsoft among the weakest performers in the S&P 500 for the month and turning one of the market’s most reliable technology leaders into a symbol of growing anxiety over AI capital expenditure.

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Author

  • Tim Clark is a Senior Geopolitical Analyst for The Ledger Asia, specializing in the intersection of international relations and market stability. With over a decade of experience, Tim provides deep-dive insights into Indo-Pacific security, global supply chain resilience, and the strategic competition between major powers.

    Previously a consultant for leading international think tanks, he focuses on how shifting diplomatic landscapes and maritime disputes impact corporate governance and trade policy. At The Ledger Asia, Tim’s analysis equips readers with the clarity needed to navigate the complex regulatory and economic environments of Southeast Asia and beyond.