SoftBank Group's market value has been cut in half from its June peak, as rising borrowing costs fuel investor worries about the sustainability of its massive AI investments.
The Tokyo-based company's shares fell 6.9% on Thursday, bringing its cumulative decline to 50% since hitting a record high on June 2, while earnings reports from major U.S. companies failed to ease market anxiety.
Four months ago, the company briefly overtook Toyota Motor to become Japan's most valuable company, but its market value now stands at approximately 24.7 trillion yen ($157 billion), trailing Hitachi and Recruit Holdings.
Global concerns over AI spending have intensified after bonds issued by U.S. cloud computing provider CoreWeave fell to distressed levels, exposing financing risks across the entire industry.

