AI Server Leader Loses 2.8 Trillion Won in a Day

Super Micro Computer Inc. (Nasdaq: SMCI) closed at $40, down 9.07%, trimming its market capitalization to about $24 billion (approximately ₩34 trillion). In a single day, roughly $2 billion (₩2.8 trillion) in market value evaporated, and trading volume surged to around 34 million shares.

In its third quarter of fiscal 2026, the company reported revenue of $10.2 billion—beating market expectations—and reiterated robust AI server demand by raising its full-year revenue guidance to $38.9 billion–$40.4 billion. At the same time, Supermicro’s board is conducting an independent investigation into a former employee and contractor indicted in March for conspiring to violate export-control laws, and a potential investor class-action lawsuit looms. These regulatory and legal risks continue to weigh on investor sentiment.

Founded in 1993 and headquartered in Silicon Valley, Supermicro manufactures servers and storage solutions. Partnering with NVIDIA and others, it has grown rapidly by supplying high-performance, liquid-cooled servers for AI data centers. Led by founder and CEO Charles Liang, the company is both a key beneficiary of surging AI infrastructure investments and a high-volatility thematic stock due to ongoing internal-control and regulatory issues.