Hidden Powerhouse in AI Servers... 4 Trillion Won Market Cap Vanished in a Day

Celestica Inc. (CLS) closed at $443.36 per share on the New York Stock Exchange on June 3, down 6.15% in a single day. Trading volume was about 1.27 million shares, and its market capitalization fell to roughly $51 billion, erasing around $3 billion—approximately ₩4 trillion—in one session.

At the end of April, Celestica reported first-quarter revenue of $4 billion and net income of $210 million, and raised its 2026 revenue guidance to more than $19 billion, signaling an aggressive growth outlook. It also expanded its ultra-high-speed networking portfolio by launching the DS6000 series of 1.6 Tb Ethernet switches for AI data centers, but the stock has shown heightened short-term volatility since the earnings release.

Headquartered in Toronto, Canada, Celestica is an electronics manufacturing services and hardware platform provider that offers end-to-end design, production and supply-chain management for major customers in data centers, communications infrastructure, industrial applications and automotive electronics. Recently, by supplying AI servers and networking equipment to cloud operators and hyperscalers, it has emerged as an under-the-radar beneficiary of the AI infrastructure value chain.